android: Initial multiplayer room creation support (WIP)

Co-Authored-By: zhang wei <zwdreams@gmail.com>
Co-Authored-By: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>

src/android/app/src/main/AndroidManifest.xml

@@ -11,6 +11,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
     <uses-feature android:name="android.software.leanback" android:required="false" />
     <uses-feature android:name="android.hardware.vulkan.version" android:version="0x401000" android:required="true" />
 
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.NFC" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />

src/android/app/src/main/java/org/citron/citron_emu/NativeLibrary.kt

@@ -21,6 +21,7 @@ import org.citron.citron_emu.utils.Log
 import org.citron.citron_emu.model.InstallResult
 import org.citron.citron_emu.model.Patch
 import org.citron.citron_emu.model.GameVerificationResult
+import org.citron.citron_emu.utils.NetPlayManager
 
 /**
  * Class which contains methods that interact
@@ -307,6 +308,24 @@ object NativeLibrary {
         sEmulationActivity.clear()
     }
 
+    @Keep
+    @JvmStatic
+    fun addNetPlayMessage(type: Int, message: String) {
+        val emulationActivity = sEmulationActivity.get()
+        if (emulationActivity != null) {
+            emulationActivity.addNetPlayMessages(type, message)
+        }
+        else {
+            NetPlayManager.addNetPlayMessage(type, message)
+        }
+    }
+
+    @Keep
+    @JvmStatic
+    fun clearChat() {
+        NetPlayManager.clearChat()
+    }
+
     @Keep
     @JvmStatic
     fun onEmulationStarted() {

src/android/app/src/main/java/org/citron/citron_emu/activities/EmulationActivity.kt

@@ -39,6 +39,7 @@ import org.citron.citron_emu.NativeLibrary
 import org.citron.citron_emu.R
 import org.citron.citron_emu.CitronApplication
 import org.citron.citron_emu.databinding.ActivityEmulationBinding
+import org.citron.citron_emu.dialogs.NetPlayDialog
 import org.citron.citron_emu.features.input.NativeInput
 import org.citron.citron_emu.features.settings.model.BooleanSetting
 import org.citron.citron_emu.features.settings.model.IntSetting
@@ -49,6 +50,7 @@ import org.citron.citron_emu.utils.InputHandler
 import org.citron.citron_emu.utils.Log
 import org.citron.citron_emu.utils.MemoryUtil
 import org.citron.citron_emu.utils.NativeConfig
+import org.citron.citron_emu.utils.NetPlayManager
 import org.citron.citron_emu.utils.NfcReader
 import org.citron.citron_emu.utils.ParamPackage
 import org.citron.citron_emu.utils.ThemeHelper
@@ -317,6 +319,15 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
         return this.apply { aspectRatio?.let { setAspectRatio(it) } }
     }
 
+    fun displayMultiplayerDialog() {
+        val dialog = NetPlayDialog(this)
+        dialog.show()
+    }
+
+    fun addNetPlayMessages(type: Int, msg: String) {
+        NetPlayManager.addNetPlayMessage(type, msg)
+    }
+
     private fun PictureInPictureParams.Builder.getPictureInPictureActionsBuilder():
         PictureInPictureParams.Builder {
         val pictureInPictureActions: MutableList<RemoteAction> = mutableListOf()

src/android/app/src/main/java/org/citron/citron_emu/dialogs/ChatDialog.kt

@@ -0,0 +1,134 @@
+package org.citron.citron_emu.dialogs
+
+import android.content.Context
+import android.content.res.Configuration
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import org.citron.citron_emu.R
+import org.citron.citron_emu.databinding.DialogChatBinding
+import org.citron.citron_emu.databinding.ItemChatMessageBinding
+import org.citron.citron_emu.utils.NetPlayManager
+import java.text.SimpleDateFormat
+import java.util.*
+
+class ChatMessage(
+    val nickname: String, // This is the common name youll see on private servers
+    val username: String, // Username is the community/forum username
+    val message: String,
+    val timestamp: String = SimpleDateFormat("HH:mm", Locale.getDefault()).format(Date())
+) {
+}
+
+class ChatDialog(context: Context) : BottomSheetDialog(context) {
+    private lateinit var binding: DialogChatBinding
+    private lateinit var chatAdapter: ChatAdapter
+    private val handler = Handler(Looper.getMainLooper())
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = DialogChatBinding.inflate(LayoutInflater.from(context))
+        setContentView(binding.root)
+
+        NetPlayManager.setChatOpen(true)
+        setupRecyclerView()
+
+        behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        behavior.skipCollapsed = context.resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
+
+
+        handler.post {
+            chatAdapter.notifyDataSetChanged()
+            binding.chatRecyclerView.post {
+                scrollToBottom()
+            }
+        }
+
+        NetPlayManager.setOnMessageReceivedListener { type, message ->
+            handler.post {
+                chatAdapter.notifyDataSetChanged()
+                scrollToBottom()
+            }
+        }
+
+        binding.sendButton.setOnClickListener {
+            val message = binding.chatInput.text.toString()
+            if (message.isNotBlank()) {
+                sendMessage(message)
+                binding.chatInput.text?.clear()
+            }
+        }
+    }
+
+    override fun dismiss() {
+        NetPlayManager.setChatOpen(false)
+        super.dismiss()
+    }
+
+    private fun sendMessage(message: String) {
+        val username = NetPlayManager.getUsername(context)
+        NetPlayManager.netPlaySendMessage(message)
+
+        val chatMessage = ChatMessage(
+            nickname = username,
+            username = "",
+            message = message,
+            timestamp = SimpleDateFormat("HH:mm", Locale.getDefault()).format(Date())
+        )
+
+        NetPlayManager.addChatMessage(chatMessage)
+        chatAdapter.notifyDataSetChanged()
+        scrollToBottom()
+    }
+
+    private fun setupRecyclerView() {
+        chatAdapter = ChatAdapter(NetPlayManager.getChatMessages())
+        binding.chatRecyclerView.layoutManager = LinearLayoutManager(context).apply {
+            stackFromEnd = true
+        }
+        binding.chatRecyclerView.adapter = chatAdapter
+    }
+
+    private fun scrollToBottom() {
+        binding.chatRecyclerView.scrollToPosition(chatAdapter.itemCount - 1)
+    }
+}
+
+class ChatAdapter(private val messages: List<ChatMessage>) :
+    RecyclerView.Adapter<ChatAdapter.ChatViewHolder>() {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ChatViewHolder {
+        val binding = ItemChatMessageBinding.inflate(
+            LayoutInflater.from(parent.context),
+            parent,
+            false
+        )
+        return ChatViewHolder(binding)
+    }
+
+    override fun getItemCount(): Int = messages.size
+
+    override fun onBindViewHolder(holder: ChatViewHolder, position: Int) {
+        holder.bind(messages[position])
+    }
+
+    inner class ChatViewHolder(private val binding: ItemChatMessageBinding) :
+        RecyclerView.ViewHolder(binding.root) {
+        fun bind(message: ChatMessage) {
+            binding.usernameText.text = message.nickname
+            binding.timestampText.text = message.timestamp
+            binding.messageText.text = message.message
+            binding.userIcon.setImageResource(when (message.nickname) {
+                "System" -> R.drawable.ic_system
+                else -> R.drawable.ic_user
+            })
+        }
+    }
+}

src/android/app/src/main/java/org/citron/citron_emu/dialogs/NetPlayDialog.kt

@@ -0,0 +1,397 @@
+// Copyright 2024 Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+package org.citron.citron_emu.dialogs
+
+import android.content.Context
+import android.content.res.Configuration
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.PopupMenu
+import android.widget.Toast
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.citron.citron_emu.CitronApplication
+import org.citron.citron_emu.R
+import org.citron.citron_emu.databinding.DialogMultiplayerConnectBinding
+import org.citron.citron_emu.databinding.DialogMultiplayerLobbyBinding
+import org.citron.citron_emu.databinding.DialogMultiplayerRoomBinding
+import org.citron.citron_emu.databinding.ItemBanListBinding
+import org.citron.citron_emu.databinding.ItemButtonNetplayBinding
+import org.citron.citron_emu.databinding.ItemTextNetplayBinding
+import org.citron.citron_emu.utils.CompatUtils
+import org.citron.citron_emu.utils.NetPlayManager
+
+class NetPlayDialog(context: Context) : BottomSheetDialog(context) {
+    private lateinit var adapter: NetPlayAdapter
+
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        behavior.skipCollapsed = context.resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
+
+        when {
+            NetPlayManager.netPlayIsJoined() -> DialogMultiplayerLobbyBinding.inflate(layoutInflater)
+                .apply {
+                    setContentView(root)
+                    adapter = NetPlayAdapter()
+                    listMultiplayer.layoutManager = LinearLayoutManager(context)
+                    listMultiplayer.adapter = adapter
+                    adapter.loadMultiplayerMenu()
+                    btnLeave.setOnClickListener {
+                        NetPlayManager.netPlayLeaveRoom()
+                        dismiss()
+                    }
+                    btnChat.setOnClickListener {
+                        ChatDialog(context).show()
+                    }
+
+                    refreshAdapterItems()
+
+                    btnModeration.visibility = if (NetPlayManager.netPlayIsModerator()) View.VISIBLE else View.GONE
+                    btnModeration.setOnClickListener {
+                        showModerationDialog()
+                    }
+
+                }
+            else -> {
+                DialogMultiplayerConnectBinding.inflate(layoutInflater).apply {
+                    setContentView(root)
+                    btnCreate.setOnClickListener {
+                        showNetPlayInputDialog(true)
+                        dismiss()
+                    }
+                    btnJoin.setOnClickListener {
+                        showNetPlayInputDialog(false)
+                        dismiss()
+                    }
+                }
+            }
+        }
+    }
+
+    data class NetPlayItems(
+        val option: Int,
+        val name: String,
+        val type: Int,
+        val id: Int = 0
+    ) {
+        companion object {
+            const val MULTIPLAYER_ROOM_TEXT = 1
+            const val MULTIPLAYER_ROOM_MEMBER = 2
+            const val MULTIPLAYER_SEPARATOR = 3
+            const val MULTIPLAYER_ROOM_COUNT = 4
+            const val TYPE_BUTTON = 0
+            const val TYPE_TEXT = 1
+            const val TYPE_SEPARATOR = 2
+        }
+    }
+
+    inner class NetPlayAdapter : RecyclerView.Adapter<NetPlayAdapter.NetPlayViewHolder>() {
+        val netPlayItems = mutableListOf<NetPlayItems>()
+
+        abstract inner class NetPlayViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView), View.OnClickListener {
+            init {
+                itemView.setOnClickListener(this)
+            }
+            abstract fun bind(item: NetPlayItems)
+        }
+
+        inner class TextViewHolder(private val binding: ItemTextNetplayBinding) : NetPlayViewHolder(binding.root) {
+            private lateinit var netPlayItem: NetPlayItems
+
+            override fun onClick(clicked: View) {}
+
+            override fun bind(item: NetPlayItems) {
+                netPlayItem = item
+                binding.itemTextNetplayName.text = item.name
+                binding.itemIcon.apply {
+                    val iconRes = when (item.option) {
+                        NetPlayItems.MULTIPLAYER_ROOM_TEXT -> R.drawable.ic_system
+                        NetPlayItems.MULTIPLAYER_ROOM_COUNT -> R.drawable.ic_joined
+                        else -> 0
+                    }
+                    visibility = if (iconRes != 0) {
+                        setImageResource(iconRes)
+                        View.VISIBLE
+                    } else View.GONE
+                }
+            }
+        }
+
+        inner class ButtonViewHolder(private val binding: ItemButtonNetplayBinding) : NetPlayViewHolder(binding.root) {
+            private lateinit var netPlayItems: NetPlayItems
+            private val isModerator = NetPlayManager.netPlayIsModerator()
+
+            init {
+                binding.itemButtonMore.apply {
+                    visibility = View.VISIBLE
+                    setOnClickListener { showPopupMenu(it) }
+                }
+            }
+
+            override fun onClick(clicked: View) {}
+
+            private fun showPopupMenu(view: View) {
+                PopupMenu(view.context, view).apply {
+                    inflate(R.menu.menu_netplay_member)
+                    menu.findItem(R.id.action_kick).isEnabled = isModerator &&
+                            netPlayItems.name != NetPlayManager.getUsername(context)
+                    menu.findItem(R.id.action_ban).isEnabled = isModerator &&
+                            netPlayItems.name != NetPlayManager.getUsername(context)
+                    setOnMenuItemClickListener { item ->
+                        if (item.itemId == R.id.action_kick) {
+                            NetPlayManager.netPlayKickUser(netPlayItems.name)
+                            true
+                        } else if (item.itemId == R.id.action_ban) {
+                            NetPlayManager.netPlayBanUser(netPlayItems.name)
+                            true
+                        } else false
+                    }
+                    show()
+                }
+            }
+
+            override fun bind(item: NetPlayItems) {
+                netPlayItems = item
+                binding.itemButtonNetplayName.text = netPlayItems.name
+            }
+        }
+
+        fun loadMultiplayerMenu() {
+            val infos = NetPlayManager.netPlayRoomInfo()
+            if (infos.isNotEmpty()) {
+                val roomInfo = infos[0].split("|")
+                netPlayItems.add(NetPlayItems(NetPlayItems.MULTIPLAYER_ROOM_TEXT, roomInfo[0], NetPlayItems.TYPE_TEXT))
+                netPlayItems.add(NetPlayItems(NetPlayItems.MULTIPLAYER_ROOM_COUNT, "${infos.size - 1}/${roomInfo[1]}", NetPlayItems.TYPE_TEXT))
+                netPlayItems.add(NetPlayItems(NetPlayItems.MULTIPLAYER_SEPARATOR, "", NetPlayItems.TYPE_SEPARATOR))
+                for (i in 1 until infos.size) {
+                    netPlayItems.add(NetPlayItems(NetPlayItems.MULTIPLAYER_ROOM_MEMBER, infos[i], NetPlayItems.TYPE_BUTTON))
+                }
+            }
+        }
+
+        override fun getItemViewType(position: Int) = netPlayItems[position].type
+
+        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): NetPlayViewHolder {
+            val inflater = LayoutInflater.from(parent.context)
+            return when (viewType) {
+                NetPlayItems.TYPE_TEXT -> TextViewHolder(ItemTextNetplayBinding.inflate(inflater, parent, false))
+                NetPlayItems.TYPE_BUTTON -> ButtonViewHolder(ItemButtonNetplayBinding.inflate(inflater, parent, false))
+                NetPlayItems.TYPE_SEPARATOR -> object : NetPlayViewHolder(inflater.inflate(R.layout.item_separator_netplay, parent, false)) {
+                    override fun bind(item: NetPlayItems) {}
+                    override fun onClick(clicked: View) {}
+                }
+                else -> throw IllegalStateException("Unsupported view type")
+            }
+        }
+
+        override fun onBindViewHolder(holder: NetPlayViewHolder, position: Int) {
+            holder.bind(netPlayItems[position])
+        }
+
+        override fun getItemCount() = netPlayItems.size
+    }
+
+    fun refreshAdapterItems() {
+        val handler = Handler(Looper.getMainLooper())
+
+        NetPlayManager.setOnAdapterRefreshListener() { type, msg ->
+            handler.post {
+                adapter.netPlayItems.clear()
+                adapter.loadMultiplayerMenu()
+                adapter.notifyDataSetChanged()
+            }
+        }
+    }
+
+    private fun showNetPlayInputDialog(isCreateRoom: Boolean) {
+        val activity = CompatUtils.findActivity(context)
+        val dialog = BottomSheetDialog(activity)
+
+        dialog.behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        dialog.behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        dialog.behavior.skipCollapsed = context.resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
+
+
+        val binding = DialogMultiplayerRoomBinding.inflate(LayoutInflater.from(activity))
+        dialog.setContentView(binding.root)
+
+        binding.textTitle.text = activity.getString(
+            if (isCreateRoom) R.string.multiplayer_create_room
+            else R.string.multiplayer_join_room
+        )
+
+        binding.ipAddress.setText(
+            if (isCreateRoom) NetPlayManager.getIpAddressByWifi(activity)
+            else NetPlayManager.getRoomAddress(activity)
+        )
+        binding.ipPort.setText(NetPlayManager.getRoomPort(activity))
+        binding.username.setText(NetPlayManager.getUsername(activity))
+
+        binding.roomName.visibility = if (isCreateRoom) View.VISIBLE else View.GONE
+        binding.maxPlayersContainer.visibility = if (isCreateRoom) View.VISIBLE else View.GONE
+        binding.maxPlayersLabel.text = context.getString(R.string.multiplayer_max_players_value, binding.maxPlayers.value.toInt())
+
+        binding.maxPlayers.addOnChangeListener { _, value, _ ->
+            binding.maxPlayersLabel.text = context.getString(R.string.multiplayer_max_players_value, value.toInt())
+        }
+
+        binding.btnConfirm.setOnClickListener {
+            binding.btnConfirm.isEnabled = false
+            binding.btnConfirm.text = activity.getString(R.string.disabled_button_text)
+
+            val ipAddress = binding.ipAddress.text.toString()
+            val username = binding.username.text.toString()
+            val portStr = binding.ipPort.text.toString()
+            val password = binding.password.text.toString()
+            val port = portStr.toIntOrNull() ?: run {
+                Toast.makeText(activity, R.string.multiplayer_port_invalid, Toast.LENGTH_LONG).show()
+                binding.btnConfirm.isEnabled = true
+                binding.btnConfirm.text = activity.getString(R.string.original_button_text)
+                return@setOnClickListener
+            }
+            val roomName = binding.roomName.text.toString()
+            val maxPlayers = binding.maxPlayers.value.toInt()
+
+            if (isCreateRoom && (roomName.length !in 3..20)) {
+                Toast.makeText(activity, R.string.multiplayer_room_name_invalid, Toast.LENGTH_LONG).show()
+                binding.btnConfirm.isEnabled = true
+                binding.btnConfirm.text = activity.getString(R.string.original_button_text)
+                return@setOnClickListener
+            }
+
+            if (ipAddress.length < 7 || username.length < 5) {
+                Toast.makeText(activity, R.string.multiplayer_input_invalid, Toast.LENGTH_LONG).show()
+                binding.btnConfirm.isEnabled = true
+                binding.btnConfirm.text = activity.getString(R.string.original_button_text)
+            } else {
+                Handler(Looper.getMainLooper()).post {
+                    val result = if (isCreateRoom) {
+                        NetPlayManager.netPlayCreateRoom(ipAddress, port, username, password, roomName, maxPlayers)
+                    } else {
+                        NetPlayManager.netPlayJoinRoom(ipAddress, port, username, password)
+                    }
+
+                    if (result == 0) {
+                        NetPlayManager.setUsername(activity, username)
+                        NetPlayManager.setRoomPort(activity, portStr)
+                        if (!isCreateRoom) NetPlayManager.setRoomAddress(activity, ipAddress)
+                        Toast.makeText(
+                            CitronApplication.appContext,
+                            if (isCreateRoom) R.string.multiplayer_create_room_success
+                            else R.string.multiplayer_join_room_success,
+                            Toast.LENGTH_LONG
+                        ).show()
+                        dialog.dismiss()
+                    } else {
+                        Toast.makeText(activity, R.string.multiplayer_could_not_connect, Toast.LENGTH_LONG).show()
+                        binding.btnConfirm.isEnabled = true
+                        binding.btnConfirm.text = activity.getString(R.string.original_button_text)
+                    }
+                }
+            }
+        }
+
+        dialog.show()
+    }
+
+    private fun showModerationDialog() {
+        val activity = CompatUtils.findActivity(context)
+        val dialog = MaterialAlertDialogBuilder(activity)
+        dialog.setTitle(R.string.multiplayer_moderation_title)
+
+        val banList = NetPlayManager.getBanList()
+        if (banList.isEmpty()) {
+            dialog.setMessage(R.string.multiplayer_no_bans)
+            dialog.setPositiveButton(android.R.string.ok, null)
+            dialog.show()
+            return
+        }
+
+        val view = LayoutInflater.from(context).inflate(R.layout.dialog_ban_list, null)
+        val recyclerView = view.findViewById<RecyclerView>(R.id.ban_list_recycler)
+        recyclerView.layoutManager = LinearLayoutManager(context)
+
+        lateinit var adapter: BanListAdapter
+
+        val onUnban: (String) -> Unit = { bannedItem ->
+            MaterialAlertDialogBuilder(activity)
+                .setTitle(R.string.multiplayer_unban_title)
+                .setMessage(activity.getString(R.string.multiplayer_unban_message, bannedItem))
+                .setPositiveButton(R.string.multiplayer_unban) { _, _ ->
+                    NetPlayManager.netPlayUnbanUser(bannedItem)
+                    adapter.removeBan(bannedItem)
+                }
+                .setNegativeButton(android.R.string.cancel, null)
+                .show()
+        }
+
+        adapter = BanListAdapter(banList, onUnban)
+        recyclerView.adapter = adapter
+
+        dialog.setView(view)
+        dialog.setPositiveButton(android.R.string.ok, null)
+        dialog.show()
+    }
+
+    private class BanListAdapter(
+        banList: List<String>,
+        private val onUnban: (String) -> Unit
+    ) : RecyclerView.Adapter<BanListAdapter.ViewHolder>() {
+
+        private val usernameBans = banList.filter { !it.contains(".") }.toMutableList()
+        private val ipBans = banList.filter { it.contains(".") }.toMutableList()
+
+        class ViewHolder(val binding: ItemBanListBinding) : RecyclerView.ViewHolder(binding.root)
+
+        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+            val binding = ItemBanListBinding.inflate(
+                LayoutInflater.from(parent.context), parent, false)
+            return ViewHolder(binding)
+        }
+
+        override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+            val isUsername = position < usernameBans.size
+            val item = if (isUsername) usernameBans[position] else ipBans[position - usernameBans.size]
+
+            holder.binding.apply {
+                banText.text = item
+                icon.setImageResource(if (isUsername) R.drawable.ic_user else R.drawable.ic_ip)
+                btnUnban.setOnClickListener { onUnban(item) }
+            }
+        }
+
+        override fun getItemCount() = usernameBans.size + ipBans.size
+
+        fun removeBan(bannedItem: String) {
+            val position = if (bannedItem.contains(".")) {
+                ipBans.indexOf(bannedItem).let { if (it >= 0) it + usernameBans.size else it }
+            } else {
+                usernameBans.indexOf(bannedItem)
+            }
+
+            if (position >= 0) {
+                if (bannedItem.contains(".")) {
+                    ipBans.remove(bannedItem)
+                } else {
+                    usernameBans.remove(bannedItem)
+                }
+                notifyItemRemoved(position)
+            }
+        }
+
+    }
+}

src/android/app/src/main/java/org/citron/citron_emu/fragments/EmulationFragment.kt

@@ -279,6 +279,11 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
                     true
                 }
 
+                R.id.menu_multiplayer -> {
+                    emulationActivity?.displayMultiplayerDialog()
+                    true
+                }
+
                 R.id.menu_lock_drawer -> {
                     when (IntSetting.LOCK_DRAWER.getInt()) {
                         DrawerLayout.LOCK_MODE_UNLOCKED -> {

src/android/app/src/main/java/org/citron/citron_emu/fragments/HomeSettingsFragment.kt

@@ -155,6 +155,14 @@ class HomeSettingsFragment : Fragment() {
                     }
                 )
             )
+            add(
+            HomeSetting(
+                R.string.multiplayer,
+                R.string.multiplayer_description,
+                R.drawable.ic_multiplayer,
+                { mainActivity.displayMultiplayerDialog() }
+            ),
+            )
             add(
                 HomeSetting(
                     R.string.verify_installed_content,

src/android/app/src/main/java/org/citron/citron_emu/ui/main/MainActivity.kt

@@ -31,6 +31,7 @@ import org.citron.citron_emu.HomeNavigationDirections
 import org.citron.citron_emu.NativeLibrary
 import org.citron.citron_emu.R
 import org.citron.citron_emu.databinding.ActivityMainBinding
+import org.citron.citron_emu.dialogs.NetPlayDialog
 import org.citron.citron_emu.features.settings.model.Settings
 import org.citron.citron_emu.fragments.AddGameFolderDialogFragment
 import org.citron.citron_emu.fragments.ProgressDialogFragment
@@ -178,6 +179,11 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
         showNavigation(visible = true, animated = true)
     }
 
+    fun displayMultiplayerDialog() {
+        val dialog = NetPlayDialog(this)
+        dialog.show()
+    }
+
     private fun setUpNavigation(navController: NavController) {
         val firstTimeSetup = PreferenceManager.getDefaultSharedPreferences(applicationContext)
             .getBoolean(Settings.PREF_FIRST_APP_LAUNCH, true)

src/android/app/src/main/java/org/citron/citron_emu/utils/CompatUtils.kt

@@ -0,0 +1,19 @@
+// Copyright 2024 Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+package org.citron.citron_emu.utils
+
+import android.app.Activity
+import android.content.Context
+import android.content.ContextWrapper
+
+object CompatUtils {
+    fun findActivity(context: Context): Activity {
+        return when (context) {
+            is Activity -> context
+            is ContextWrapper -> findActivity(context.baseContext)
+            else -> throw IllegalArgumentException("Context is not an Activity")
+        }
+    }
+}

src/android/app/src/main/java/org/citron/citron_emu/utils/NetPlayManager.kt

@@ -0,0 +1,223 @@
+// Copyright 2024 Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+package org.citron.citron_emu.utils
+
+import android.app.Activity
+import android.content.Context
+import android.net.wifi.WifiManager
+import android.os.Handler
+import android.os.Looper
+import android.text.format.Formatter
+import android.widget.Toast
+import androidx.preference.PreferenceManager
+import org.citron.citron_emu.CitronApplication
+import org.citron.citron_emu.R
+import org.citron.citron_emu.dialogs.ChatMessage
+
+object NetPlayManager {
+    external fun netPlayCreateRoom(ipAddress: String, port: Int, username: String, password: String, roomName: String, maxPlayers: Int): Int
+    external fun netPlayJoinRoom(ipAddress: String, port: Int, username: String, password: String): Int
+    external fun netPlayRoomInfo(): Array<String>
+    external fun netPlayIsJoined(): Boolean
+    external fun netPlayIsHostedRoom(): Boolean
+    external fun netPlaySendMessage(msg: String)
+    external fun netPlayKickUser(username: String)
+    external fun netPlayLeaveRoom()
+    external fun netPlayIsModerator(): Boolean
+    external fun netPlayGetBanList(): Array<String>
+    external fun netPlayBanUser(username: String)
+    external fun netPlayUnbanUser(username: String)
+
+    private var messageListener: ((Int, String) -> Unit)? = null
+    private var adapterRefreshListener: ((Int, String) -> Unit)? = null
+
+    fun setOnMessageReceivedListener(listener: (Int, String) -> Unit) {
+        messageListener = listener
+    }
+
+    fun setOnAdapterRefreshListener(listener: (Int, String) -> Unit) {
+        adapterRefreshListener = listener
+    }
+
+    fun getUsername(activity: Context): String {        val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+        val name = "Citron${(Math.random() * 100).toInt()}"
+        return prefs.getString("NetPlayUsername", name) ?: name
+    }
+
+    fun setUsername(activity: Activity, name: String) {
+        val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+        prefs.edit().putString("NetPlayUsername", name).apply()
+    }
+
+    fun getRoomAddress(activity: Activity): String {
+        val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+        val address = getIpAddressByWifi(activity)
+        return prefs.getString("NetPlayRoomAddress", address) ?: address
+    }
+
+    fun setRoomAddress(activity: Activity, address: String) {
+        val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+        prefs.edit().putString("NetPlayRoomAddress", address).apply()
+    }
+
+    fun getRoomPort(activity: Activity): String {
+        val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+        return prefs.getString("NetPlayRoomPort", "24872") ?: "24872"
+    }
+
+    fun setRoomPort(activity: Activity, port: String) {
+        val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+        prefs.edit().putString("NetPlayRoomPort", port).apply()
+    }
+
+    private val chatMessages = mutableListOf<ChatMessage>()
+    private var isChatOpen = false
+
+    fun addChatMessage(message: ChatMessage) {
+        chatMessages.add(message)
+    }
+
+    fun getChatMessages(): List<ChatMessage> = chatMessages
+
+    fun clearChat() {
+        chatMessages.clear()
+    }
+
+    fun setChatOpen(isOpen: Boolean) {
+        isChatOpen = isOpen
+    }
+
+    fun addNetPlayMessage(type: Int, msg: String) {
+        val context = CitronApplication.appContext
+        val message = formatNetPlayStatus(context, type, msg)
+
+        when (type) {
+            NetPlayStatus.CHAT_MESSAGE -> {
+                val parts = msg.split(":", limit = 2)
+                if (parts.size == 2) {
+                    val nickname = parts[0].trim()
+                    val chatMessage = parts[1].trim()
+                    addChatMessage(ChatMessage(
+                        nickname = nickname,
+                        username = "",
+                        message = chatMessage
+                    ))
+                }
+            }
+            NetPlayStatus.MEMBER_JOIN,
+            NetPlayStatus.MEMBER_LEAVE,
+            NetPlayStatus.MEMBER_KICKED,
+            NetPlayStatus.MEMBER_BANNED -> {
+                addChatMessage(ChatMessage(
+                    nickname = "System",
+                    username = "",
+                    message = message
+                ))
+            }
+        }
+
+
+            Handler(Looper.getMainLooper()).post {
+                if (!isChatOpen) {
+                    Toast.makeText(context, message, Toast.LENGTH_SHORT).show()
+                }
+            }
+
+
+        messageListener?.invoke(type, msg)
+        adapterRefreshListener?.invoke(type, msg)
+    }
+
+    private fun formatNetPlayStatus(context: Context, type: Int, msg: String): String {
+        return when (type) {
+            NetPlayStatus.NETWORK_ERROR -> context.getString(R.string.multiplayer_network_error)
+            NetPlayStatus.LOST_CONNECTION -> context.getString(R.string.multiplayer_lost_connection)
+            NetPlayStatus.NAME_COLLISION -> context.getString(R.string.multiplayer_name_collision)
+            NetPlayStatus.MAC_COLLISION -> context.getString(R.string.multiplayer_mac_collision)
+            NetPlayStatus.CONSOLE_ID_COLLISION -> context.getString(R.string.multiplayer_console_id_collision)
+            NetPlayStatus.WRONG_VERSION -> context.getString(R.string.multiplayer_wrong_version)
+            NetPlayStatus.WRONG_PASSWORD -> context.getString(R.string.multiplayer_wrong_password)
+            NetPlayStatus.COULD_NOT_CONNECT -> context.getString(R.string.multiplayer_could_not_connect)
+            NetPlayStatus.ROOM_IS_FULL -> context.getString(R.string.multiplayer_room_is_full)
+            NetPlayStatus.HOST_BANNED -> context.getString(R.string.multiplayer_host_banned)
+            NetPlayStatus.PERMISSION_DENIED -> context.getString(R.string.multiplayer_permission_denied)
+            NetPlayStatus.NO_SUCH_USER -> context.getString(R.string.multiplayer_no_such_user)
+            NetPlayStatus.ALREADY_IN_ROOM -> context.getString(R.string.multiplayer_already_in_room)
+            NetPlayStatus.CREATE_ROOM_ERROR -> context.getString(R.string.multiplayer_create_room_error)
+            NetPlayStatus.HOST_KICKED -> context.getString(R.string.multiplayer_host_kicked)
+            NetPlayStatus.UNKNOWN_ERROR -> context.getString(R.string.multiplayer_unknown_error)
+            NetPlayStatus.ROOM_UNINITIALIZED -> context.getString(R.string.multiplayer_room_uninitialized)
+            NetPlayStatus.ROOM_IDLE -> context.getString(R.string.multiplayer_room_idle)
+            NetPlayStatus.ROOM_JOINING -> context.getString(R.string.multiplayer_room_joining)
+            NetPlayStatus.ROOM_JOINED -> context.getString(R.string.multiplayer_room_joined)
+            NetPlayStatus.ROOM_MODERATOR -> context.getString(R.string.multiplayer_room_moderator)
+            NetPlayStatus.MEMBER_JOIN -> context.getString(R.string.multiplayer_member_join, msg)
+            NetPlayStatus.MEMBER_LEAVE -> context.getString(R.string.multiplayer_member_leave, msg)
+            NetPlayStatus.MEMBER_KICKED -> context.getString(R.string.multiplayer_member_kicked, msg)
+            NetPlayStatus.MEMBER_BANNED -> context.getString(R.string.multiplayer_member_banned, msg)
+            NetPlayStatus.ADDRESS_UNBANNED -> context.getString(R.string.multiplayer_address_unbanned)
+            NetPlayStatus.CHAT_MESSAGE -> msg
+            else -> ""
+        }
+    }
+
+    fun getIpAddressByWifi(activity: Activity): String {
+        var ipAddress = 0
+        val wifiManager = activity.getSystemService(WifiManager::class.java)
+        val wifiInfo = wifiManager.connectionInfo
+        if (wifiInfo != null) {
+            ipAddress = wifiInfo.ipAddress
+        }
+
+        if (ipAddress == 0) {
+            val dhcpInfo = wifiManager.dhcpInfo
+            if (dhcpInfo != null) {
+                ipAddress = dhcpInfo.ipAddress
+            }
+        }
+
+        return if (ipAddress == 0) {
+            "192.168.0.1"
+        } else {
+            Formatter.formatIpAddress(ipAddress)
+        }
+    }
+
+    fun getBanList(): List<String> {
+        Log.info("Netplay Ban ${netPlayGetBanList()}.toList()")
+        return netPlayGetBanList().toList()
+    }
+
+    object NetPlayStatus {
+        const val NO_ERROR = 0
+        const val NETWORK_ERROR = 1
+        const val LOST_CONNECTION = 2
+        const val NAME_COLLISION = 3
+        const val MAC_COLLISION = 4
+        const val CONSOLE_ID_COLLISION = 5
+        const val WRONG_VERSION = 6
+        const val WRONG_PASSWORD = 7
+        const val COULD_NOT_CONNECT = 8
+        const val ROOM_IS_FULL = 9
+        const val HOST_BANNED = 10
+        const val PERMISSION_DENIED = 11
+        const val NO_SUCH_USER = 12
+        const val ALREADY_IN_ROOM = 13
+        const val CREATE_ROOM_ERROR = 14
+        const val HOST_KICKED = 15
+        const val UNKNOWN_ERROR = 16
+        const val ROOM_UNINITIALIZED = 17
+        const val ROOM_IDLE = 18
+        const val ROOM_JOINING = 19
+        const val ROOM_JOINED = 20
+        const val ROOM_MODERATOR = 21
+        const val MEMBER_JOIN = 22
+        const val MEMBER_LEAVE = 23
+        const val MEMBER_KICKED = 24
+        const val MEMBER_BANNED = 25
+        const val ADDRESS_UNBANNED = 26
+        const val CHAT_MESSAGE = 27
+    }
+}

src/android/app/src/main/jni/CMakeLists.txt

@@ -13,6 +13,8 @@ add_library(citron-android SHARED
     android_config.cpp
     android_config.h
     native_input.cpp
+    multiplayer.cpp
+    multiplayer.h
 )
 
 set_property(TARGET citron-android PROPERTY IMPORTED_LOCATION ${FFmpeg_LIBRARY_DIR})

src/android/app/src/main/jni/multiplayer.cpp

@@ -0,0 +1,334 @@
+// Copyright 2025 Citra Project / Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+#include "multiplayer.h"
+#include "core/core.h"
+#include "network/network.h"
+#include "common/android/android_common.h"
+#include "common/android/id_cache.h"
+#include <chrono>
+#include <thread>
+
+void AddNetPlayMessage(jint type, jstring msg) {
+     Common::Android::GetEnvForThread()->CallStaticVoidMethod(Common::Android::GetNativeLibraryClass(),
+                                                              reinterpret_cast<jmethodID>(AddNetPlayMessage), type, msg);
+}
+
+void AddNetPlayMessage(int type, const std::string& msg) {
+    JNIEnv* env = Common::Android::GetEnvForThread();
+    jmethodID method_id = env->GetStaticMethodID(Common::Android::GetNativeLibraryClass(), "addNetPlayMessage", "(ILjava/lang/String;)V");
+    env->CallStaticVoidMethod(Common::Android::GetNativeLibraryClass(), method_id, type, Common::Android::ToJString(env, msg));
+}
+
+void ClearChat() {
+    JNIEnv* env = Common::Android::GetEnvForThread();
+    jmethodID method_id = env->GetStaticMethodID(Common::Android::GetNativeLibraryClass(), "clearChat", "()V");
+    env->CallStaticVoidMethod(Common::Android::GetNativeLibraryClass(), method_id);
+}
+
+bool NetworkInit() {
+    bool result =     Network::RoomNetwork().Init();
+
+    if (!result) {
+        return false;
+    }
+
+    if (auto member = Network::RoomNetwork().GetRoomMember().lock()) {
+        // register the network structs to use in slots and signals
+        member->BindOnStateChanged([](const Network::RoomMember::State& state) {
+            if (state == Network::RoomMember::State::Joined ||
+                state == Network::RoomMember::State::Moderator) {
+                NetPlayStatus status;
+                std::string msg;
+                switch (state) {
+                case Network::RoomMember::State::Joined:
+                    status = NetPlayStatus::ROOM_JOINED;
+                    break;
+                case Network::RoomMember::State::Moderator:
+                    status = NetPlayStatus::ROOM_MODERATOR;
+                    break;
+                default:
+                    return;
+                }
+                AddNetPlayMessage(static_cast<int>(status), msg);
+            }
+        });
+        member->BindOnError([](const Network::RoomMember::Error& error) {
+            NetPlayStatus status;
+            std::string msg;
+            switch (error) {
+            case Network::RoomMember::Error::LostConnection:
+                status = NetPlayStatus::LOST_CONNECTION;
+                break;
+            case Network::RoomMember::Error::HostKicked:
+                status = NetPlayStatus::HOST_KICKED;
+                break;
+            case Network::RoomMember::Error::UnknownError:
+                status = NetPlayStatus::UNKNOWN_ERROR;
+                break;
+            case Network::RoomMember::Error::NameCollision:
+                status = NetPlayStatus::NAME_COLLISION;
+                break;
+            case Network::RoomMember::Error::WrongVersion:
+                status = NetPlayStatus::WRONG_VERSION;
+                break;
+            case Network::RoomMember::Error::WrongPassword:
+                status = NetPlayStatus::WRONG_PASSWORD;
+                break;
+            case Network::RoomMember::Error::CouldNotConnect:
+                status = NetPlayStatus::COULD_NOT_CONNECT;
+                break;
+            case Network::RoomMember::Error::RoomIsFull:
+                status = NetPlayStatus::ROOM_IS_FULL;
+                break;
+            case Network::RoomMember::Error::HostBanned:
+                status = NetPlayStatus::HOST_BANNED;
+                break;
+            case Network::RoomMember::Error::PermissionDenied:
+                status = NetPlayStatus::PERMISSION_DENIED;
+                break;
+            case Network::RoomMember::Error::NoSuchUser:
+                status = NetPlayStatus::NO_SUCH_USER;
+                break;
+            case Network::RoomMember::Error::IpCollision:
+                status = NetPlayStatus::MAC_COLLISION;
+                break;
+            }
+            AddNetPlayMessage(static_cast<int>(status), msg);
+        });
+        member->BindOnStatusMessageReceived([](const Network::StatusMessageEntry& status_message) {
+            NetPlayStatus status = NetPlayStatus::NO_ERROR;
+            std::string msg(status_message.nickname);
+            switch (status_message.type) {
+            case Network::IdMemberJoin:
+                status = NetPlayStatus::MEMBER_JOIN;
+                break;
+            case Network::IdMemberLeave:
+                status = NetPlayStatus::MEMBER_LEAVE;
+                break;
+            case Network::IdMemberKicked:
+                status = NetPlayStatus::MEMBER_KICKED;
+                break;
+            case Network::IdMemberBanned:
+                status = NetPlayStatus::MEMBER_BANNED;
+                break;
+            case Network::IdAddressUnbanned:
+                status = NetPlayStatus::ADDRESS_UNBANNED;
+                break;
+            }
+            AddNetPlayMessage(static_cast<int>(status), msg);
+        });
+        member->BindOnChatMessageReceived([](const Network::ChatEntry& chat) {
+            NetPlayStatus status = NetPlayStatus::CHAT_MESSAGE;
+            std::string msg(chat.nickname);
+            msg += ": ";
+            msg += chat.message;
+            AddNetPlayMessage(static_cast<int>(status), msg);
+        });
+    }
+
+    return true;
+}
+
+const AnnounceMultiplayerRoom::GameInfo game{
+    "",
+    0,
+    ""
+};
+
+NetPlayStatus NetPlayCreateRoom(const std::string& ipaddress, int port, const std::string& username,
+                                const std::string& password, const std::string& room_name,
+                                int max_players) {
+
+    auto member = Network::RoomNetwork().GetRoomMember().lock();
+    if (!member) {
+        return NetPlayStatus::NETWORK_ERROR;
+    }
+
+    if (member->GetState() == Network::RoomMember::State::Joining || member->IsConnected()) {
+        return NetPlayStatus::ALREADY_IN_ROOM;
+    }
+
+    auto room = Network::RoomNetwork().GetRoom().lock();
+    if (!room) {
+        return NetPlayStatus::NETWORK_ERROR;
+    }
+
+    if (room_name.length() < 3 || room_name.length() > 20) {
+        return NetPlayStatus::CREATE_ROOM_ERROR;
+    }
+
+    if (!room->Create(room_name, "", ipaddress, port, password, std::min(max_players, 16), username,
+                      game, std::make_unique<Network::VerifyUser::NullBackend>(), {})) {
+        return NetPlayStatus::CREATE_ROOM_ERROR;
+    }
+
+    // Failsafe timer to avoid joining before creation
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+    member->Join(username, ipaddress.c_str(), port, 0, Network::NoPreferredIP, password);
+
+    // Failsafe timer to avoid joining before creation
+    for (int i = 0; i < 5; i++) {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        if (member->GetState() == Network::RoomMember::State::Joined ||
+            member->GetState() == Network::RoomMember::State::Moderator) {
+            return NetPlayStatus::NO_ERROR;
+        }
+    }
+
+    // If join failed while room is created, clean up the room
+    room->Destroy();
+    return NetPlayStatus::CREATE_ROOM_ERROR;
+}
+
+NetPlayStatus NetPlayJoinRoom(const std::string& ipaddress, int port, const std::string& username,
+                              const std::string& password) {
+    auto member = Network::RoomNetwork().GetRoomMember().lock();
+    if (!member) {
+        return NetPlayStatus::NETWORK_ERROR;
+    }
+
+    if (member->GetState() == Network::RoomMember::State::Joining || member->IsConnected()) {
+        return NetPlayStatus::ALREADY_IN_ROOM;
+    }
+
+    member->Join(username, ipaddress.c_str(), port, 0, Network::NoPreferredIP, password);
+
+    // Wait a bit for the connection and join process to complete
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+
+    if (member->GetState() == Network::RoomMember::State::Joined ||
+        member->GetState() == Network::RoomMember::State::Moderator) {
+        return NetPlayStatus::NO_ERROR;
+    }
+
+    if (!member->IsConnected()) {
+        return NetPlayStatus::COULD_NOT_CONNECT;
+    }
+
+    return NetPlayStatus::WRONG_PASSWORD;
+}
+
+void NetPlaySendMessage(const std::string& msg) {
+    if (auto room = Network::RoomNetwork().GetRoomMember().lock()) {
+        if (room->GetState() != Network::RoomMember::State::Joined &&
+            room->GetState() != Network::RoomMember::State::Moderator) {
+
+            return;
+        }
+        room->SendChatMessage(msg);
+    }
+}
+
+void NetPlayKickUser(const std::string& username) {
+    if (auto room = Network::RoomNetwork().GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        auto it = std::find_if(members.begin(), members.end(),
+                               [&username](const Network::RoomMember::MemberInformation& member) {
+                                   return member.nickname == username;
+                               });
+        if (it != members.end()) {
+            room->SendModerationRequest(Network::RoomMessageTypes::IdModKick, username);
+        }
+    }
+}
+
+void NetPlayBanUser(const std::string& username) {
+    if (auto room = Network::RoomNetwork().GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        auto it = std::find_if(members.begin(), members.end(),
+                               [&username](const Network::RoomMember::MemberInformation& member) {
+                                   return member.nickname == username;
+                               });
+        if (it != members.end()) {
+            room->SendModerationRequest(Network::RoomMessageTypes::IdModBan, username);
+        }
+    }
+}
+
+void NetPlayUnbanUser(const std::string& username) {
+    if (auto room = Network::RoomNetwork().GetRoomMember().lock()) {
+        room->SendModerationRequest(Network::RoomMessageTypes::IdModUnban, username);
+    }
+}
+
+std::vector<std::string> NetPlayRoomInfo() {
+    std::vector<std::string> info_list;
+    if (auto room = Network::RoomNetwork().GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        if (!members.empty()) {
+            // name and max players
+            auto room_info = room->GetRoomInformation();
+            info_list.push_back(room_info.name + "|" + std::to_string(room_info.member_slots));
+            // all members
+            for (const auto& member : members) {
+                info_list.push_back(member.nickname);
+            }
+        }
+    }
+    return info_list;
+}
+
+bool NetPlayIsJoined() {
+    auto member = Network::RoomNetwork().GetRoomMember().lock();
+    if (!member) {
+        return false;
+    }
+
+    return (member->GetState() == Network::RoomMember::State::Joined ||
+            member->GetState() == Network::RoomMember::State::Moderator);
+}
+
+bool NetPlayIsHostedRoom() {
+    if (auto room = Network::RoomNetwork().GetRoom().lock()) {
+        return room->GetState() == Network::Room::State::Open;
+    }
+    return false;
+}
+
+void NetPlayLeaveRoom() {
+    if (auto room = Network::RoomNetwork().GetRoom().lock()) {
+        // if you are in a room, leave it
+        if (auto member = Network::RoomNetwork().GetRoomMember().lock()) {
+            member->Leave();
+        }
+
+        ClearChat();
+
+        // if you are hosting a room, also stop hosting
+        if (room->GetState() == Network::Room::State::Open) {
+            room->Destroy();
+        }
+    }
+}
+
+void NetworkShutdown() {
+    Network::RoomNetwork().Shutdown();
+}
+
+bool NetPlayIsModerator() {
+    auto member = Network::RoomNetwork().GetRoomMember().lock();
+    if (!member) {
+        return false;
+    }
+    return member->GetState() == Network::RoomMember::State::Moderator;
+}
+
+std::vector<std::string> NetPlayGetBanList() {
+    std::vector<std::string> ban_list;
+    if (auto room = Network::RoomNetwork().GetRoom().lock()) {
+        auto [username_bans, ip_bans] = room->GetBanList();
+
+        // Add username bans
+        for (const auto& username : username_bans) {
+            ban_list.push_back(username);
+        }
+
+        // Add IP bans
+        for (const auto& ip : ip_bans) {
+            ban_list.push_back(ip);
+        }
+    }
+    return ban_list;
+}

src/android/app/src/main/jni/multiplayer.h

@@ -0,0 +1,64 @@
+// Copyright 2025 Citra Project / Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <common/common_types.h>
+
+enum class NetPlayStatus : s32 {
+    NO_ERROR,
+
+    NETWORK_ERROR,
+    LOST_CONNECTION,
+    NAME_COLLISION,
+    MAC_COLLISION,
+    CONSOLE_ID_COLLISION,
+    WRONG_VERSION,
+    WRONG_PASSWORD,
+    COULD_NOT_CONNECT,
+    ROOM_IS_FULL,
+    HOST_BANNED,
+    PERMISSION_DENIED,
+    NO_SUCH_USER,
+    ALREADY_IN_ROOM,
+    CREATE_ROOM_ERROR,
+    HOST_KICKED,
+    UNKNOWN_ERROR,
+
+    ROOM_UNINITIALIZED,
+    ROOM_IDLE,
+    ROOM_JOINING,
+    ROOM_JOINED,
+    ROOM_MODERATOR,
+
+    MEMBER_JOIN,
+    MEMBER_LEAVE,
+    MEMBER_KICKED,
+    MEMBER_BANNED,
+    ADDRESS_UNBANNED,
+
+    CHAT_MESSAGE,
+};
+
+bool NetworkInit();
+NetPlayStatus NetPlayCreateRoom(const std::string& ipaddress, int port, const std::string& username,
+                                const std::string& password, const std::string& room_name,
+                                int max_players);
+NetPlayStatus NetPlayJoinRoom(const std::string& ipaddress, int port, const std::string& username,
+                              const std::string& password);
+std::vector<std::string> NetPlayRoomInfo();
+bool NetPlayIsJoined();
+bool NetPlayIsHostedRoom();
+bool NetPlayIsModerator();
+void NetPlaySendMessage(const std::string& msg);
+void NetPlayKickUser(const std::string& username);
+void NetPlayBanUser(const std::string& username);
+void NetPlayLeaveRoom();
+std::string NetPlayGetConsoleId();
+void NetworkShutdown();
+std::vector<std::string> NetPlayGetBanList();
+void NetPlayUnbanUser(const std::string& username);

src/android/app/src/main/jni/native.cpp

@@ -62,6 +62,7 @@
 #include "video_core/renderer_vulkan/renderer_vulkan.h"
 #include "video_core/vulkan_common/vulkan_instance.h"
 #include "video_core/vulkan_common/vulkan_surface.h"
+#include "multiplayer.h"
 
 #define jconst [[maybe_unused]] const auto
 #define jauto [[maybe_unused]] auto
@@ -705,6 +706,71 @@ void Java_org_citron_citron_1emu_NativeLibrary_setCabinetMode(JNIEnv* env, jclas
         static_cast<Service::NFP::CabinetMode>(jcabinetMode));
 }
 
+JNIEXPORT jint JNICALL Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayCreateRoom(
+        JNIEnv* env, [[maybe_unused]] jobject obj, jstring ipaddress, jint port, jstring username,
+        jstring password, jstring room_name, jint max_players) {
+    return static_cast<jint>(NetPlayCreateRoom(Common::Android::GetJString(env, ipaddress), port,
+                                               Common::Android::GetJString(env, username), Common::Android::GetJString(env, password),
+                                               Common::Android::GetJString(env, room_name), max_players));
+}
+JNIEXPORT jint JNICALL Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayJoinRoom(
+        JNIEnv* env, [[maybe_unused]] jobject obj, jstring ipaddress, jint port, jstring username,
+        jstring password) {
+    return static_cast<jint>(NetPlayJoinRoom(Common::Android::GetJString(env, ipaddress), port,
+                                             Common::Android::GetJString(env, username), Common::Android::GetJString(env, password)));
+}
+JNIEXPORT jobjectArray JNICALL
+Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayRoomInfo(
+        JNIEnv* env, [[maybe_unused]] jobject obj) {
+    return Common::Android::ToJStringArray(env, NetPlayRoomInfo());
+}
+JNIEXPORT jboolean JNICALL
+Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayIsJoined(
+        [[maybe_unused]] JNIEnv* env, [[maybe_unused]] jobject obj) {
+    return NetPlayIsJoined();
+}
+JNIEXPORT jboolean JNICALL
+Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayIsHostedRoom(
+        [[maybe_unused]] JNIEnv* env, [[maybe_unused]] jobject obj) {
+    return NetPlayIsHostedRoom();
+}
+JNIEXPORT void JNICALL
+Java_org_citron_citron_1emu_utils_NetPlayManager_netPlaySendMessage(
+        JNIEnv* env, [[maybe_unused]] jobject obj, jstring msg) {
+    NetPlaySendMessage(Common::Android::GetJString(env, msg));
+}
+JNIEXPORT void JNICALL Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayKickUser(
+        JNIEnv* env, [[maybe_unused]] jobject obj, jstring username) {
+    NetPlayKickUser(Common::Android::GetJString(env, username));
+}
+JNIEXPORT void JNICALL Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayLeaveRoom(
+        [[maybe_unused]] JNIEnv* env, [[maybe_unused]] jobject obj) {
+    NetPlayLeaveRoom();
+}
+
+JNIEXPORT jboolean JNICALL
+Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayIsModerator(
+        [[maybe_unused]] JNIEnv* env, [[maybe_unused]] jobject obj) {
+    return NetPlayIsModerator();
+}
+
+JNIEXPORT jobjectArray JNICALL
+Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayGetBanList(
+        JNIEnv* env, [[maybe_unused]] jobject obj) {
+    return Common::Android::ToJStringArray(env, NetPlayGetBanList());
+}
+
+JNIEXPORT void JNICALL Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayBanUser(
+        JNIEnv* env, [[maybe_unused]] jobject obj, jstring username) {
+    NetPlayBanUser(Common::Android::GetJString(env, username));
+}
+
+JNIEXPORT void JNICALL Java_org_citron_citron_1emu_utils_NetPlayManager_netPlayUnbanUser(
+        JNIEnv* env, [[maybe_unused]] jobject obj, jstring username) {
+    NetPlayUnbanUser(Common::Android::GetJString(env, username));
+}
+
+
 jboolean Java_org_citron_citron_1emu_NativeLibrary_isFirmwareAvailable(JNIEnv* env, jclass clazz) {
     auto bis_system =
         EmulationSession::GetInstance().System().GetFileSystemController().GetSystemNANDContents();

src/android/app/src/main/res/drawable/ic_chat.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,2L4,2c-1.1,0 -1.99,0.9 -1.99,2L2,22l4,-4h14c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM18,14L6,14v-2h12v2zM18,11L6,11L6,9h12v2zM18,8L6,8L6,6h12v2z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_ip.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorControlNormal"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM11,19.93c-3.95,-0.49 -7,-3.85 -7,-7.93 0,-0.62 0.08,-1.21 0.21,-1.79L9,15v1c0,1.1 0.9,2 2,2v1.93zM17.9,17.39c-0.26,-0.81 -1,-1.39 -1.9,-1.39h-1v-3c0,-0.55 -0.45,-1 -1,-1L8,12v-2h2c0.55,0 1,-0.45 1,-1L11,7h2c1.1,0 2,-0.9 2,-2v-0.41c2.93,1.19 5,4.06 5,7.41 0,2.08 -0.8,3.97 -2.1,5.39z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_joined.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M16,11c1.66,0 2.99,-1.34 2.99,-3S17.66,5 16,5c-1.66,0 -3,1.34 -3,3s1.34,3 3,3zM8,11c1.66,0 2.99,-1.34 2.99,-3S9.66,5 8,5C6.34,5 5,6.34 5,8s1.34,3 3,3zM8,13c-2.33,0 -7,1.17 -7,3.5L1,19h14v-2.5c0,-2.33 -4.67,-3.5 -7,-3.5zM16,13c-0.29,0 -0.62,0.02 -0.97,0.05 1.16,0.84 1.97,1.97 1.97,3.45L17,19h6v-2.5c0,-2.33 -4.67,-3.5 -7,-3.5z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_more_vert.xml

@@ -1,9 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
     android:height="24dp"
-    android:viewportHeight="24"
     android:viewportWidth="24"
-    android:width="24dp">
+    android:viewportHeight="24">
     <path
         android:fillColor="?attr/colorControlNormal"
-        android:pathData="M12,8c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM12,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM12,16c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2z" />
+        android:pathData="M12,8c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM12,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM12,16c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2z"/>
-</vector>
+</vector>

src/android/app/src/main/res/drawable/ic_multiplayer.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M16,11c1.66,0 2.99,-1.34 2.99,-3S17.66,5 16,5c-1.66,0 -3,1.34 -3,3s1.34,3 3,3zM8,11c1.66,0 2.99,-1.34 2.99,-3S9.66,5 8,5C6.34,5 5,6.34 5,8s1.34,3 3,3zM8,13c-2.33,0 -7,1.17 -7,3.5L1,19h14v-2.5c0,-2.33 -4.67,-3.5 -7,-3.5zM16,13c-0.29,0 -0.62,0.02 -0.97,0.05 1.16,0.84 1.97,1.97 1.97,3.45L17,19h6v-2.5c0,-2.33 -4.67,-3.5 -7,-3.5z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_network.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorPrimary"
+        android:pathData="M1,9l2,2c4.97,-4.97 13.03,-4.97 18,0l2,-2C16.93,2.93 7.08,2.93 1,9zM9,17l3,3 3,-3c-1.65,-1.66 -4.34,-1.66 -6,0zM5,13l2,2c2.76,-2.76 7.24,-2.76 10,0l2,-2C15.14,9.14 8.87,9.14 5,13z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_send.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorControlNormal"
+        android:pathData="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_system.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M21,3L3,3c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h5v2h8v-2h5c1.1,0 1.99,-0.9 1.99,-2L23,5c0,-1.1 -0.9,-2 -2,-2zM21,17L3,17L3,5h18v12z"/>
+</vector>

src/android/app/src/main/res/drawable/ic_user.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorControlNormal"
+        android:pathData="M12,12c2.21,0 4,-1.79 4,-4s-1.79,-4 -4,-4 -4,1.79 -4,4 1.79,4 4,4zM12,14c-2.67,0 -8,1.34 -8,4v2h16v-2c0,-2.66 -5.33,-4 -8,-4z"/>
+</vector>

src/android/app/src/main/res/layout/dialog_ban_list.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.recyclerview.widget.RecyclerView
+    android:id="@+id/ban_list_recycler"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="8dp"/>

src/android/app/src/main/res/layout/dialog_bottom_sheet.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:gravity="center"
+    app:strokeWidth="0dp"
+    app:cardCornerRadius="24dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:gravity="center"
+        android:background="?colorSurface">
+
+        <View
+            android:layout_width="128dp"
+            android:layout_height="4dp"
+            android:layout_marginVertical="8dp"
+            android:backgroundTint="?colorSurfaceVariant" />
+
+        <androidx.core.widget.NestedScrollView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <LinearLayout
+                android:id="@+id/content"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical" />
+
+        </androidx.core.widget.NestedScrollView>
+
+    </LinearLayout>
+
+</com.google.android.material.card.MaterialCardView>

src/android/app/src/main/res/layout/dialog_chat.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/text_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/chat"
+        android:textAppearance="?attr/textAppearanceHeadline6"
+        android:gravity="center"
+        android:layout_marginBottom="16dp" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/chat_recycler_view"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginBottom="16dp"
+        android:transcriptMode="alwaysScroll" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:hint="@string/type_message">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/chat_input"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="text"
+                android:imeOptions="actionSend" />
+
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <ImageButton
+            android:id="@+id/send_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_gravity="bottom"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@drawable/ic_send"
+            android:contentDescription="@string/send_message" />
+    </LinearLayout>
+</LinearLayout>

src/android/app/src/main/res/layout/dialog_multiplayer_connect.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <com.google.android.material.bottomsheet.BottomSheetDragHandleView
+        android:id="@+id/drag_handle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <TextView
+            android:id="@+id/text_title"
+            android:text="@string/multiplayer"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="?attr/textAppearanceHeadline6"
+            android:gravity="center"
+            android:layout_marginTop="4dp"
+            android:textColor="?attr/colorOnSurface" />
+
+        <ImageView
+            android:layout_width="140dp"
+            android:layout_height="140dp"
+            android:layout_gravity="center"
+            android:layout_marginTop="16dp"
+            android:layout_marginBottom="24dp"
+            android:src="@drawable/ic_network"
+            app:tint="?attr/colorPrimary" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_marginHorizontal="16dp"
+            android:layout_marginBottom="8dp">
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_join"
+                style="@style/Widget.Material3.Button.TonalButton"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="@string/multiplayer_join_room"
+                app:icon="@drawable/ic_install"
+                app:cornerRadius="16dp" />
+
+            <Space
+                android:layout_width="16dp"
+                android:layout_height="match_parent" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_create"
+                style="@style/Widget.Material3.Button"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="@string/multiplayer_create_room"
+                app:icon="@drawable/ic_add"
+                app:cornerRadius="16dp" />
+
+        </LinearLayout>
+
+    </LinearLayout>
+</LinearLayout>

src/android/app/src/main/res/layout/dialog_multiplayer_lobby.xml

@@ -0,0 +1,75 @@
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <com.google.android.material.bottomsheet.BottomSheetDragHandleView
+            android:id="@+id/drag_handle"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:padding="16dp">
+
+            <TextView
+                android:id="@+id/text_title"
+                android:text="@string/multiplayer"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textAppearance="?attr/textAppearanceHeadline6"
+                android:gravity="center"
+                android:layout_marginTop="4dp"
+                android:textColor="?attr/colorOnSurface" />
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/list_multiplayer"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:layout_marginBottom="8dp" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_chat"
+                style="@style/Widget.Material3.Button.TonalButton"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="16dp"
+                android:layout_marginBottom="8dp"
+                android:enabled="true"
+                android:text="@string/multiplayer_chat"
+                app:icon="@drawable/ic_chat"
+                app:cornerRadius="16dp" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_moderation"
+                style="@style/Widget.Material3.Button.TonalButton"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="16dp"
+                android:layout_marginBottom="8dp"
+                android:enabled="true"
+                android:text="@string/multiplayer_moderation"
+                app:cornerRadius="16dp"
+                app:icon="@drawable/ic_user" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_leave"
+                style="@style/Widget.Material3.Button"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="16dp"
+                android:text="@string/multiplayer_exit_room"
+                app:icon="@drawable/ic_exit"
+                app:cornerRadius="16dp" />
+
+        </LinearLayout>
+    </LinearLayout>
+</ScrollView>

src/android/app/src/main/res/layout/dialog_multiplayer_room.xml

@@ -0,0 +1,119 @@
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp"
+        android:clipToPadding="false"
+        android:clipChildren="false"
+        android:elevation="4dp">
+
+        <TextView
+            android:id="@+id/textTitle"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="?attr/textAppearanceHeadline6"
+            android:gravity="center"
+            android:paddingBottom="8dp"
+            android:textColor="?attr/colorOnSurface" />
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/multiplayer_ip_address"
+            android:padding="8dp">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/ip_address"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="text" />
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/multiplayer_ip_port"
+            android:padding="8dp">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/ip_port"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="number" />
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/multiplayer_username"
+            android:padding="8dp">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/username"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="text" />
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/multiplayer_password"
+            android:padding="8dp">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/password"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="textPassword" />
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/multiplayer_room_name"
+            android:padding="8dp">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/room_name"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="text" />
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <LinearLayout
+            android:id="@+id/max_players_container"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <com.google.android.material.slider.Slider
+                android:id="@+id/max_players"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_margin="8dp"
+                android:value="8"
+                android:valueFrom="2"
+                android:valueTo="16"
+                android:stepSize="1" />
+
+            <TextView
+                android:id="@+id/max_players_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:text="@string/multiplayer_max_players_value" />
+        </LinearLayout>
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_confirm"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@android:string/ok"
+            android:layout_gravity="center" />
+    </LinearLayout>
+</ScrollView>

src/android/app/src/main/res/layout/item_ban_list.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="16dp"
+    android:gravity="center_vertical">
+
+    <ImageView
+        android:id="@+id/icon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:src="@drawable/ic_user"
+        android:layout_marginEnd="16dp"/>
+
+    <TextView
+        android:id="@+id/ban_text"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"/>
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btn_unban"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/multiplayer_unban"/>
+</LinearLayout>

src/android/app/src/main/res/layout/item_button_netplay.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:padding="8dp">
+
+    <TextView
+        android:id="@+id/item_button_netplay_name"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:textAppearance="?attr/textAppearanceBodyLarge" />
+
+    <ImageButton
+        android:id="@+id/item_button_more"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/multiplayer_more_options"
+        android:src="@drawable/ic_more_vert"
+        android:padding="12dp" />
+
+</LinearLayout>

src/android/app/src/main/res/layout/item_chat_message.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="8dp">
+
+    <ImageView
+        android:id="@+id/user_icon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_marginEnd="8dp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/username_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/timestamp_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textSize="12sp"
+            android:textColor="#888888" />
+
+        <TextView
+            android:id="@+id/message_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
+
+    </LinearLayout>
+</LinearLayout>

src/android/app/src/main/res/layout/item_netplay_button.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/item_button_netplay_name"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"/>
+
+    <Button
+        android:id="@+id/item_button_netplay"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/multiplayer_kick_member"/>
+
+    <ImageButton
+        android:id="@+id/item_button_more"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:src="@drawable/ic_more_vert"/>
+</LinearLayout>

src/android/app/src/main/res/layout/item_netplay_separator.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<View xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="1dp"
+    android:background="?android:attr/listDivider"/>

src/android/app/src/main/res/layout/item_netplay_text.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="16dp">
+
+    <ImageView
+        android:id="@+id/item_icon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_marginEnd="16dp"/>
+
+    <TextView
+        android:id="@+id/item_text_netplay_name"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"/>
+</LinearLayout>

src/android/app/src/main/res/layout/item_separator_netplay.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.divider.MaterialDivider
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginHorizontal="16dp"
+    android:layout_marginVertical="8dp" />

src/android/app/src/main/res/layout/item_text_netplay.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="12dp"
+    android:gravity="center_vertical">
+
+    <ImageView
+        android:id="@+id/item_icon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_marginEnd="16dp"
+        app:tint="?attr/colorPrimary" />
+
+    <TextView
+        android:id="@+id/item_text_netplay_name"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:textAppearance="?attr/textAppearanceBodyLarge" />
+
+</LinearLayout>

src/android/app/src/main/res/menu/menu_in_game.xml

@@ -26,6 +26,11 @@
         android:icon="@drawable/ic_overlay"
         android:title="@string/emulation_input_overlay" />
 
+    <item
+        android:id="@+id/menu_multiplayer"
+        android:icon="@drawable/ic_network"
+        android:title="@string/multiplayer" />
+
     <item
         android:id="@+id/menu_lock_drawer"
         android:icon="@drawable/ic_unlock"

src/android/app/src/main/res/menu/menu_netplay_member.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/action_kick"
+        android:title="@string/multiplayer_kick_member"
+        android:enabled="false" />
+
+    <item
+        android:id="@+id/action_ban"
+        android:title="@string/multiplayer_ban"
+        android:enabled="false" />
+
+</menu>

src/android/app/src/main/res/values/strings.xml

@@ -649,6 +649,74 @@
     <string name="multiplier_eight">8x</string>
     <string name="multiplier_sixteen">16x</string>
 
+    <!-- Multiplayer -->
+    <string name="multiplayer">Multiplayer</string>
+    <string name="multiplayer_description">Host your own game room or join an existing one to play with people</string>
+    <string name="multiplayer_room_title">Room: %1$s</string>
+    <string name="multiplayer_console_id">Console ID：%1$s</string>
+    <string name="multiplayer_create_room">Create</string>
+    <string name="multiplayer_join_room">Join</string>
+    <string name="multiplayer_username">Username</string>
+    <string name="multiplayer_ip_address">IP Address</string>
+    <string name="multiplayer_ip_port">Port</string>
+    <string name="multiplayer_create_room_success">Room created successfully!</string>
+    <string name="multiplayer_join_room_success">Join the room successfully!</string>
+    <string name="multiplayer_create_room_failed">Failed to create room!</string>
+    <string name="multiplayer_join_room_failed">Failed to join room!</string>
+    <string name="multiplayer_input_invalid">Invalid address or name is too short!</string>
+    <string name="multiplayer_port_invalid">Invalid port!</string>
+    <string name="multiplayer_exit_room">Exit Room</string>
+    <string name="multiplayer_network_error">Network error</string>
+    <string name="multiplayer_lost_connection">Lost connection</string>
+    <string name="multiplayer_name_collision">Name collision</string>
+    <string name="multiplayer_mac_collision">Mac collision</string>
+    <string name="multiplayer_console_id_collision">Console ID collision</string>
+    <string name="multiplayer_wrong_version">Wrong version</string>
+    <string name="multiplayer_wrong_password">Wrong password</string>
+    <string name="multiplayer_could_not_connect">Could not connect</string>
+    <string name="multiplayer_room_is_full">Room is full</string>
+    <string name="multiplayer_host_banned">Host banned</string>
+    <string name="multiplayer_permission_denied">Permission denied</string>
+    <string name="multiplayer_no_such_user">No such user</string>
+    <string name="multiplayer_already_in_room">Already in room</string>
+    <string name="multiplayer_create_room_error">Create room error</string>
+    <string name="multiplayer_host_kicked">Host kicked</string>
+    <string name="multiplayer_unknown_error">unknown error</string>
+    <string name="multiplayer_room_uninitialized">Room uninitialized</string>
+    <string name="multiplayer_room_idle">Room idle</string>
+    <string name="multiplayer_room_joining">Room joining</string>
+    <string name="multiplayer_room_joined">Room joined</string>
+    <string name="multiplayer_room_moderator">Room moderator</string>
+    <string name="multiplayer_member_join">%1$s joined</string>
+    <string name="multiplayer_member_leave">%1$s left</string>
+    <string name="multiplayer_member_kicked">%1$s kicked</string>
+    <string name="multiplayer_member_banned">%1$s banned</string>
+    <string name="multiplayer_address_unbanned">address unbanned</string>
+    <string name="multiplayer_kick_member">Kick Out</string>
+    <string name="multiplayer_chat_input_hint">Send messages……</string>
+    <string name="multiplayer_password">Password</string>
+    <string name="original_button_text">Join</string>
+    <string name="disabled_button_text">Joining...</string>
+    <string name="multiplayer_room_name">Room Name</string>
+    <string name="multiplayer_room_name_invalid">Room name must be between 3 and 20 characters</string>
+    <string name="multiplayer_max_players">Max Players (16)</string>
+    <string name="multiplayer_max_players_value">Max Players: %d</string>
+    <string name="multiplayer_chat">Chat</string>
+    <string name="multiplayer_more_options">More Options</string>
+    <string name="multiplayer_ip_copied">IP Address copied to clipboard</string>
+    <string name="multiplayer_server_address">Server Address</string>
+    <string name="chat">Chat</string>
+    <string name="type_message">Type message……</string>
+    <string name="send">Send</string>
+    <string name="send_message">Send Message</string>
+    <string name="multiplayer_moderation">Moderation</string>
+    <string name="multiplayer_moderation_title">Ban List</string>
+    <string name="multiplayer_no_bans">No banned users</string>
+    <string name="multiplayer_unban_title">Unban User</string>
+    <string name="multiplayer_unban">Unban</string>
+    <string name="multiplayer_unban_message">Are you sure you want to unban %1$s?</string>
+    <string name="multiplayer_ban">Ban User</string>
+
     <!-- Black backgrounds theme -->
     <string name="use_black_backgrounds">Black backgrounds</string>
     <string name="use_black_backgrounds_description">When using the dark theme, apply black backgrounds.</string>

src/common/android/android_common.cpp

@@ -38,6 +38,15 @@ jstring ToJString(JNIEnv* env, std::u16string_view str) {
     return ToJString(env, Common::UTF16ToUTF8(str));
 }
 
+jobjectArray ToJStringArray(JNIEnv* env, const std::vector<std::string>& strs) {
+    jobjectArray array =
+            env->NewObjectArray(static_cast<jsize>(strs.size()), env->FindClass("java/lang/String"), env->NewStringUTF(""));
+    for (size_t i = 0; i < strs.size(); ++i) {
+        env->SetObjectArrayElement(array, static_cast<jsize>(i), ToJString(env, strs[i]));
+    }
+    return array;
+}
+
 double GetJDouble(JNIEnv* env, jobject jdouble) {
     return env->GetDoubleField(jdouble, GetDoubleValueField());
 }

src/common/android/android_common.h

@@ -11,6 +11,7 @@
 namespace Common::Android {
 
 std::string GetJString(JNIEnv* env, jstring jstr);
+jobjectArray ToJStringArray(JNIEnv* env, const std::vector<std::string>& strs);
 jstring ToJString(JNIEnv* env, std::string_view str);
 jstring ToJString(JNIEnv* env, std::u16string_view str);
 

src/common/android/id_cache.cpp

@@ -8,6 +8,7 @@
 #include "common/assert.h"
 #include "common/fs/fs_android.h"
 #include "video_core/rasterizer_interface.h"
+#include "android\app\src\main\jni\multiplayer.h"
 
 static JavaVM* s_java_vm;
 static jclass s_native_library_class;
@@ -88,6 +89,8 @@ static jmethodID s_citron_input_device_get_supports_vibration;
 static jmethodID s_citron_input_device_vibrate;
 static jmethodID s_citron_input_device_get_axes;
 static jmethodID s_citron_input_device_has_keys;
+static jmethodID s_add_netplay_message;
+static jmethodID s_clear_chat;
 
 static constexpr jint JNI_VERSION = JNI_VERSION_1_6;
 
@@ -144,6 +147,15 @@ jmethodID GetOnEmulationStarted() {
     return s_on_emulation_started;
 }
 
+jmethodID GetAddNetPlayMessage() {
+    return s_add_netplay_message;
+}
+
+jmethodID ClearChat() {
+    return s_clear_chat;
+}
+
+
 jmethodID GetOnEmulationStopped() {
     return s_on_emulation_stopped;
 }
@@ -547,6 +559,9 @@ jint JNI_OnLoad(JavaVM* vm, void* reserved) {
     s_citron_input_device_has_keys =
         env->GetMethodID(citron_input_device_interface, "hasKeys", "([I)[Z");
     env->DeleteLocalRef(citron_input_device_interface);
+    s_add_netplay_message = env->GetStaticMethodID(s_native_library_class, "addNetPlayMessage",
+                                                   "(ILjava/lang/String;)V");
+    s_clear_chat = env->GetStaticMethodID(s_native_library_class, "clearChat", "()V");
 
     // Initialize Android Storage
     Common::FS::Android::RegisterCallbacks(env, s_native_library_class);
@@ -554,6 +569,9 @@ jint JNI_OnLoad(JavaVM* vm, void* reserved) {
     // Initialize applets
     Common::Android::SoftwareKeyboard::InitJNI(env);
 
+    // Init network for multiplayer
+    NetworkInit();
+
     return JNI_VERSION;
 }
 
@@ -582,6 +600,9 @@ void JNI_OnUnload(JavaVM* vm, void* reserved) {
 
     // UnInitialize applets
     SoftwareKeyboard::CleanupJNI(env);
+
+    // Shutdown network for multiplayer
+    NetworkShutdown();
 }
 
 #ifdef __cplusplus