diff --git a/Android/app/src/main/AndroidManifest.xml b/Android/app/src/main/AndroidManifest.xml
index 631cb1e..0a13bb4 100644
--- a/Android/app/src/main/AndroidManifest.xml
+++ b/Android/app/src/main/AndroidManifest.xml
@@ -28,11 +28,8 @@
         <activity android:name=".MultiActivity" />
         <activity android:name=".ConnexionPlayerActivity" />
         <activity android:name=".CreateLobbyActivity" />
-        <!--
         <activity android:name=".ServerDetailsActivity" />
-
         <activity android:name=".QuizMultiActivity" />
-        -->
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/Android/app/src/main/java/com/example/mathseduc/ConnexionPlayerActivity.kt b/Android/app/src/main/java/com/example/mathseduc/ConnexionPlayerActivity.kt
index b27ff25..24d71ad 100644
--- a/Android/app/src/main/java/com/example/mathseduc/ConnexionPlayerActivity.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/ConnexionPlayerActivity.kt
@@ -1,5 +1,6 @@
 package com.example.mathseduc
 
+import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import androidx.activity.ComponentActivity
@@ -12,6 +13,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -39,9 +41,9 @@ class ConnexionPlayerActivity : ComponentActivity() {
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ConnexionPlayerContent(activity: ConnexionPlayerActivity) {
-    var nickname by remember { mutableStateOf("") }
-    var password by remember { mutableStateOf("") }
-    var showDialog by remember { mutableStateOf(false) }
+    var nickname by rememberSaveable { mutableStateOf("") }
+    var password by rememberSaveable { mutableStateOf("") }
+    var showDialog by rememberSaveable { mutableStateOf(false) }
 
     val context = LocalContext.current
 
@@ -121,22 +123,22 @@ fun ConnexionPlayerContent(activity: ConnexionPlayerActivity) {
 
             Spacer(modifier = Modifier.height(16.dp))
 
-            Button(
-                    onClick = {
-                        val isAuthenticated = ControllerPlayer.authenticateUser(nickname, password)
-                        if (isAuthenticated != -1) {
-                            MainActivity.idPlayerConnected = isAuthenticated
-                            Toast.makeText(context, "Connexion réussie, bienvenue $nickname !", Toast.LENGTH_SHORT).show()
-                        } else {
-                            Toast.makeText(context, "Connexion échouée. Veuillez réessayer.", Toast.LENGTH_SHORT).show()
-                        }
-                    },
-                    modifier = Modifier
-                            .fillMaxWidth()
-                            .height(48.dp)
-            ) {
-                Text("Login")
-            }
+        Button(
+            onClick = {
+                val isAuthenticated = ControllerPlayer.authenticateUser(nickname, password)
+                if (isAuthenticated != -1) {
+                    MainActivity.idPlayerConnected = isAuthenticated
+                    Toast.makeText(context, "Connexion réussie, bienvenue $nickname !", Toast.LENGTH_SHORT).show()
+                } else {
+                    Toast.makeText(context, "Connexion échouée. Veuillez réessayer.", Toast.LENGTH_SHORT).show()
+                }
+            },
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(48.dp)
+        ) {
+            Text("Login")
+        }
 
             Spacer(modifier = Modifier.height(16.dp))
 
diff --git a/Android/app/src/main/java/com/example/mathseduc/MainActivity.kt b/Android/app/src/main/java/com/example/mathseduc/MainActivity.kt
index 5ed91fc..8b25357 100644
--- a/Android/app/src/main/java/com/example/mathseduc/MainActivity.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/MainActivity.kt
@@ -1,6 +1,7 @@
 package com.example.mathseduc
 
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.compose.runtime.Composable
diff --git a/Android/app/src/main/java/com/example/mathseduc/QuizMultiActivity.kt b/Android/app/src/main/java/com/example/mathseduc/QuizMultiActivity.kt
new file mode 100644
index 0000000..ffad1e3
--- /dev/null
+++ b/Android/app/src/main/java/com/example/mathseduc/QuizMultiActivity.kt
@@ -0,0 +1,35 @@
+package com.example.mathseduc
+
+import android.os.Bundle
+import android.os.CountDownTimer
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.tooling.preview.Preview
+import com.example.mathseduc.ui.QuizMultiScreen
+import com.example.mathseduc.ui.theme.MathsEducTheme
+
+
+class QuizMultiActivity : ComponentActivity() {
+    companion object {
+        var countDownTimer: CountDownTimer? = null
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContent {
+            MathsEducTheme {
+                val lobbyId = intent.getIntExtra("lobbyId",-1)
+                QuizMultiScreen(lobbyId) //TODO sus
+            }
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        // Stop the CountDownTimer to avoid memory leaks
+        countDownTimer?.cancel()
+    }
+}
+
diff --git a/Android/app/src/main/java/com/example/mathseduc/ServerDetailsActivity.kt b/Android/app/src/main/java/com/example/mathseduc/ServerDetailsActivity.kt
new file mode 100644
index 0000000..4fd4413
--- /dev/null
+++ b/Android/app/src/main/java/com/example/mathseduc/ServerDetailsActivity.kt
@@ -0,0 +1,230 @@
+package com.example.mathseduc
+
+import android.content.Intent
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.util.Log
+import androidx.activity.ComponentActivity
+import androidx.activity.OnBackPressedCallback
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.example.mathseduc.controllers.ControllerLobby
+import com.example.mathseduc.controllers.ControllerPlayer
+import com.example.mathseduc.controllers.ControllerUtiliser
+import com.example.mathseduc.models.Player
+import com.example.mathseduc.ui.theme.Colors
+import okhttp3.MultipartBody
+
+class ServerDetailsActivity : ComponentActivity() {
+
+    private var playerList: List<Player> = emptyList()
+    private val handler = Handler(Looper.getMainLooper())
+    private val refreshInterval: Long = 2000
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        val onBackPressedCallback: OnBackPressedCallback = object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                myBackPressed()
+            }
+        }
+
+        onBackPressedDispatcher.addCallback(this, onBackPressedCallback)
+
+        setContent {
+            ServerDetailPage()
+        }
+
+        /*
+        onBackPressedDispatcher.addCallback(this, onBackPressedCallback)
+        //setContentView(R.layout.activity_server_details)
+
+        val serverName = intent.getStringExtra("serverName")
+
+        val serverNameTextView = findViewById<TextView>(R.id.titleServerDetails)
+        serverNameTextView.text = serverName
+
+        val lobbyId = intent.getIntExtra("lobbyId", -1)
+
+        if (savedInstanceState != null) {
+            playerList = savedInstanceState?.getParcelableArrayList("playerList") ?: emptyList()
+        } else {
+            val playerId = ControllerPlayer.getPlayersIdFromLobbyId(lobbyId)
+            if (playerId != null) {
+                playerList = playerId.mapNotNull { playerId ->
+                    ControllerPlayer.getPlayerInfoById(playerId.toString())
+                }
+            }
+        }
+
+        val listViewPlayers = findViewById<ListView>(R.id.listViewPlayers)
+        playerAdapter = PlayerAdapter(this, playerList)
+        listViewPlayers.adapter = playerAdapter
+
+        handler.postDelayed(refreshRunnable, refreshInterval)
+
+        val btnLaunchQuiz = findViewById<Button>(R.id.btnLaunchQuiz)
+
+        if (ControllerLobby.playerCreatorIdPresentInLobby(MainActivity.idPlayerConnected, lobbyId)) {
+            btnLaunchQuiz.visibility = View.VISIBLE
+            btnLaunchQuiz.setOnClickListener {
+
+                val formDataBuilder = MultipartBody.Builder().setType(MultipartBody.FORM)
+                formDataBuilder.addFormDataPart("launched", "1")
+
+                ControllerLobby.updateLobbyLauched(lobbyId,formDataBuilder)
+
+                val intent = Intent(this, QuizMultiActivity::class.java)
+                intent.putExtra("lobbyId", lobbyId)
+                startActivity(intent)
+            }
+        } else {
+            btnLaunchQuiz.visibility = View.GONE
+        }
+        */
+    }
+
+    private fun myBackPressed() {
+        val lobbyId = intent.getIntExtra("lobbyId", -1)
+
+        ControllerUtiliser.DeleteUtiliserForLobby(MainActivity.idPlayerConnected, lobbyId)
+
+        if (ControllerLobby.playerCreatorIdPresentInLobby(MainActivity.idPlayerConnected, lobbyId)) {
+            val idNextPlayerCreator = ControllerUtiliser.getIdNextPlayerInLobby(lobbyId)
+
+            if (idNextPlayerCreator == -1) {
+                ControllerLobby.deleteLobby(lobbyId)
+            } else {
+                val formDataBuilder = MultipartBody.Builder().setType(MultipartBody.FORM)
+                formDataBuilder.addFormDataPart("idplayercreator", idNextPlayerCreator.toString())
+                ControllerLobby.updateLobbyIdCreatorLobby(lobbyId, formDataBuilder)
+            }
+        }
+        //handler.removeCallbacks(refreshRunnable)
+        finish()
+    }
+
+    @Composable
+    fun ServerDetailPage() {
+        val context = LocalContext.current
+
+        val lobbyName = intent.getStringExtra("serverName")
+        val lobbyId = intent.getIntExtra("lobbyId",-1)
+
+        var isCreator by rememberSaveable { mutableStateOf(false) }
+        var playerListInfos: List<Player> by rememberSaveable { mutableStateOf(emptyList()) }
+        var playerList by rememberSaveable { mutableStateOf(ControllerPlayer.getPlayersIdFromLobbyId(lobbyId.toString()) ?: emptyList()) }
+        var refreshState by rememberSaveable { mutableStateOf(true) }
+
+        DisposableEffect(refreshState) {
+            val handler = Handler(Looper.getMainLooper())
+            val refreshRunnable = object : Runnable {
+                override fun run() {
+                    playerList = ControllerPlayer.getPlayersIdFromLobbyId(lobbyId.toString())!!
+
+                    playerListInfos = playerList.mapNotNull { playerId ->
+                        ControllerPlayer.getPlayerInfoById(playerId.toString())
+                    }
+
+                    isCreator = ControllerLobby.playerCreatorIdPresentInLobby(MainActivity.idPlayerConnected, lobbyId)
+
+                    if(ControllerLobby.lobbyIsLaunched(lobbyId)){
+                        val intent = Intent(context, QuizMultiActivity::class.java)
+                        intent.putExtra("lobbyId", lobbyId)
+                        context.startActivity(intent)
+                        refreshState = false
+                    }
+
+                    if (refreshState){
+                        handler.postDelayed(this,3000)
+                        Log.e("MainActivity", "Refresh ServerDetails")
+                    }
+                }
+            }
+
+            handler.post(refreshRunnable)
+
+            onDispose {
+                refreshState = false
+                handler.removeCallbacks(refreshRunnable)
+            }
+        }
+
+        val modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp)
+
+        Column(
+            modifier = modifier,
+            verticalArrangement = Arrangement.Center,
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Text(
+                text = lobbyName!!,
+                color = Color.White,
+                fontWeight = FontWeight.Bold
+            )
+            LazyColumn(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .weight(0.75f)
+            ) {
+                items(playerListInfos) { player ->
+                    Text(
+                        text = player.nickname,
+                        fontSize = 18.sp,
+                        color = Colors.White,
+                        modifier = Modifier.weight(1f)
+                    )
+                }
+            }
+            if (isCreator) {
+                val formDataBuilder = MultipartBody.Builder().setType(MultipartBody.FORM)
+                formDataBuilder.addFormDataPart("launched", "1")
+                Button(
+                    onClick = {
+                        ControllerLobby.updateLobbyLauched(lobbyId,formDataBuilder)
+                    },
+                    shape = RoundedCornerShape(15),
+                    enabled = isCreator,
+                    colors = ButtonDefaults.buttonColors(Colors.Green),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(48.dp)
+                ) {
+                    Text(
+                        text = "LAUNCH",
+                        color = Color.White,
+                        fontWeight = FontWeight.Bold
+                    )
+                }
+            }
+        }
+    }
+}
diff --git a/Android/app/src/main/java/com/example/mathseduc/controllers/ControllerPlayer.kt b/Android/app/src/main/java/com/example/mathseduc/controllers/ControllerPlayer.kt
index 22a99d9..347a558 100644
--- a/Android/app/src/main/java/com/example/mathseduc/controllers/ControllerPlayer.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/controllers/ControllerPlayer.kt
@@ -13,7 +13,7 @@ import java.io.IOException
 class ControllerPlayer {
     companion object {
 
-        fun getPlayersIdFromLobbyId(lobbyId: Int): List<Int>? {
+        fun getPlayersIdFromLobbyId(lobbyId: String?): List<Int>? {
             val policy = StrictMode.ThreadPolicy.Builder().permitAll().build()
             StrictMode.setThreadPolicy(policy)
 
diff --git a/Android/app/src/main/java/com/example/mathseduc/models/Lobby.kt b/Android/app/src/main/java/com/example/mathseduc/models/Lobby.kt
index 73b8e81..00bbf22 100644
--- a/Android/app/src/main/java/com/example/mathseduc/models/Lobby.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/models/Lobby.kt
@@ -1,5 +1,8 @@
 package com.example.mathseduc.models
 
+import android.os.Parcel
+import android.os.Parcelable
+
 data class Lobby(
     val id: Int,
     val name: String,
@@ -9,4 +12,40 @@ data class Lobby(
     val idchapter: Int,
     val difficulty: Int,
     val launched: Int
-)
\ No newline at end of file
+) : Parcelable {
+    constructor(parcel: Parcel) : this(
+        parcel.readInt(),
+        parcel.readString() ?: "",
+        parcel.readString() ?: "",
+        parcel.readInt(),
+        parcel.readInt(),
+        parcel.readInt(),
+        parcel.readInt(),
+        parcel.readInt()
+    )
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeInt(id)
+        parcel.writeString(name)
+        parcel.writeString(password)
+        parcel.writeInt(nbplayers)
+        parcel.writeInt(idplayercreator)
+        parcel.writeInt(idchapter)
+        parcel.writeInt(difficulty)
+        parcel.writeInt(launched)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<Lobby> {
+        override fun createFromParcel(parcel: Parcel): Lobby {
+            return Lobby(parcel)
+        }
+
+        override fun newArray(size: Int): Array<Lobby?> {
+            return arrayOfNulls(size)
+        }
+    }
+}
\ No newline at end of file
diff --git a/Android/app/src/main/java/com/example/mathseduc/ui/activity_create_lobby.kt b/Android/app/src/main/java/com/example/mathseduc/ui/activity_create_lobby.kt
index 73511e1..f845a95 100644
--- a/Android/app/src/main/java/com/example/mathseduc/ui/activity_create_lobby.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/ui/activity_create_lobby.kt
@@ -1,6 +1,9 @@
 package com.example.mathseduc.ui
 
 
+import android.content.Intent
+import android.util.Log
+import android.widget.Toast
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Box
@@ -34,8 +37,13 @@ import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.unit.IntSize
 import androidx.compose.ui.unit.dp
+import com.example.mathseduc.MainActivity
+import com.example.mathseduc.ServerDetailsActivity
 import com.example.mathseduc.controllers.ControllerChapter
+import com.example.mathseduc.controllers.ControllerLobby
+import com.example.mathseduc.controllers.ControllerUtiliser
 import com.example.mathseduc.ui.theme.Colors
+import okhttp3.MultipartBody
 
 @Composable
 fun CreateLobbyPage() {
@@ -46,8 +54,9 @@ fun CreateLobbyPage() {
     var chapter by remember { mutableStateOf("") }
     var expandedDifficulty by remember { mutableStateOf(false) }
     var expandedChapter by remember { mutableStateOf(false) }
-    var sizeDifficulty by remember { mutableStateOf(IntSize.Zero) }
-    var sizeChapter by remember { mutableStateOf(IntSize.Zero) }
+    var size by remember { mutableStateOf(IntSize.Zero) }
+
+    val difficultyOptions = listOf("Facile", "Moyen", "Difficile")
 
     val context = LocalContext.current
     val keyboardController = LocalSoftwareKeyboardController.current
@@ -96,7 +105,6 @@ fun CreateLobbyPage() {
 
 
         Box {
-            val difficultyOptions = listOf("Facile", "Moyen", "Difficile")
             TextField(
                 value = difficulty,
                 onValueChange = { difficulty = it },
@@ -113,7 +121,7 @@ fun CreateLobbyPage() {
                         expandedDifficulty = !expandedDifficulty
                     })
                     .onGloballyPositioned {
-                        sizeDifficulty = it.size
+                        size = it.size
                     }
                     .fillMaxWidth()
                     .background(Colors.White)
@@ -133,7 +141,7 @@ fun CreateLobbyPage() {
                 expanded = expandedDifficulty,
                 onDismissRequest = { expandedDifficulty = false },
                 modifier = Modifier
-                    .width(with(LocalDensity.current) { sizeDifficulty.width.toDp() })
+                    .width(with(LocalDensity.current) { size.width.toDp() })
                     .background(Colors.White)
                     .padding(8.dp)
             ) {
@@ -169,7 +177,7 @@ fun CreateLobbyPage() {
                         expandedChapter = !expandedChapter
                     })
                     .onGloballyPositioned {
-                        sizeChapter = it.size
+                        size = it.size
                     }
                     .fillMaxWidth()
                     .background(Colors.White)
@@ -209,7 +217,50 @@ fun CreateLobbyPage() {
         Button(
             onClick = {
                 // Handle button click (Create Lobby)
-                // Use the collected data: lobbyName, password, nbPlayers, difficulty, chapter
+                val selectedChapter = ControllerChapter.getChapters()?.find { it.name == chapter }
+                val difficultyNum = difficultyOptions.indexOf(difficulty) + 1
+
+                if (lobbyName.isBlank() || password.isBlank() || nbPlayers.isBlank() || nbPlayers.toInt() <= 0 || difficulty.isBlank() || selectedChapter == null) {
+                    // Show error message if any field is invalid
+                    Toast.makeText(context, "Invalid input. Please check all fields.", Toast.LENGTH_SHORT).show()
+                } else {
+                    try {
+                        val formDataBuilder = MultipartBody.Builder().setType(MultipartBody.FORM)
+
+                        // Add fields to form data
+                        formDataBuilder.addFormDataPart("name", lobbyName)
+                        formDataBuilder.addFormDataPart("password", password)
+                        formDataBuilder.addFormDataPart("nbplayers", nbPlayers)
+                        formDataBuilder.addFormDataPart("idplayercreator", MainActivity.idPlayerConnected.toString())
+                        formDataBuilder.addFormDataPart("idchapter", selectedChapter.id)
+                        formDataBuilder.addFormDataPart("difficulty", difficultyNum.toString())
+                        Log.e("formData : ",formDataBuilder.toString())
+                        // Call createLobby function from ControllerLobby
+                        val lobbyId = ControllerLobby.createLobby(formDataBuilder)
+
+                        // Check if lobby creation is successful
+                        if (lobbyId != -1) {
+                            val formDataBuilderConnexion = MultipartBody.Builder().setType(MultipartBody.FORM)
+                            formDataBuilderConnexion.addFormDataPart("idplayer", MainActivity.idPlayerConnected.toString())
+                            formDataBuilderConnexion.addFormDataPart("idlobby", lobbyId.toString())
+                            formDataBuilderConnexion.addFormDataPart("playertime", "0")
+
+                            ControllerUtiliser.createUtiliserByIdLobby(formDataBuilderConnexion)
+
+                            Toast.makeText(context, "Lobby created successfully!", Toast.LENGTH_SHORT).show()
+                            val intent = Intent(context, ServerDetailsActivity::class.java)
+                            intent.putExtra("lobbyId", lobbyId)
+                            intent.putExtra("serverName", lobbyName)
+                            context.startActivity(intent)
+                        } else {
+                            Toast.makeText(context, "Failed to create lobby. Please try again.", Toast.LENGTH_SHORT).show()
+                        }
+                    } catch (e: Exception) {
+                        // Log en cas d'erreur
+                        Log.e("CreateLobby", "Error creating lobby", e)
+                        Toast.makeText(context, "Failed to create lobby. Please try again.", Toast.LENGTH_SHORT).show()
+                    }
+                }
             },
             modifier = Modifier
                 .fillMaxWidth()
@@ -218,7 +269,6 @@ fun CreateLobbyPage() {
             Text(text = "Create Lobby", color = Colors.White)
         }
     }
-
 }
 
 
diff --git a/Android/app/src/main/java/com/example/mathseduc/ui/activity_main.kt b/Android/app/src/main/java/com/example/mathseduc/ui/activity_main.kt
index 4e3fd8f..7349c65 100644
--- a/Android/app/src/main/java/com/example/mathseduc/ui/activity_main.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/ui/activity_main.kt
@@ -27,6 +27,7 @@ import androidx.compose.ui.unit.dp
 import com.example.mathseduc.ConnexionPlayerActivity
 import com.example.mathseduc.MainActivity
 import com.example.mathseduc.MultiActivity
+import com.example.mathseduc.QuizMultiActivity
 import com.example.mathseduc.R
 import com.example.mathseduc.ui.theme.Colors
 
@@ -54,7 +55,10 @@ fun HomePage() {
         Spacer(modifier = Modifier.height(16.dp))
 
         Button(
-            onClick = { /* Handle solo button click */ },
+            onClick = {
+                val intent = Intent(context, QuizMultiActivity::class.java)
+                context.startActivity(intent)
+            },
             shape = RoundedCornerShape(15),
             colors = ButtonDefaults.buttonColors(Colors.Green),
             modifier = Modifier
diff --git a/Android/app/src/main/java/com/example/mathseduc/ui/activity_multi.kt b/Android/app/src/main/java/com/example/mathseduc/ui/activity_multi.kt
index 967ec87..7231802 100644
--- a/Android/app/src/main/java/com/example/mathseduc/ui/activity_multi.kt
+++ b/Android/app/src/main/java/com/example/mathseduc/ui/activity_multi.kt
@@ -2,6 +2,8 @@ package com.example.mathseduc.ui
 import android.content.Intent
 import android.os.Handler
 import android.os.Looper
+import android.util.Log
+import android.widget.Toast
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Box
@@ -24,7 +26,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -34,33 +36,42 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.example.mathseduc.CreateLobbyActivity
 import com.example.mathseduc.MainActivity
+import com.example.mathseduc.ServerDetailsActivity
 import com.example.mathseduc.controllers.ControllerChapter
 import com.example.mathseduc.controllers.ControllerLobby
+import com.example.mathseduc.controllers.ControllerUtiliser
 import com.example.mathseduc.models.Lobby
 import com.example.mathseduc.ui.theme.Colors
+import okhttp3.MultipartBody
 
 
 @Composable
 fun MultiPage() {
     val context = LocalContext.current
-    var selectedItem by remember { mutableStateOf<Lobby?>(null) }
+    var selectedItem by rememberSaveable { mutableStateOf<Lobby?>(null) }
 
-    var lobbyList by remember { mutableStateOf(ControllerLobby.getLobbies() ?: emptyList()) }
-    var refreshState by remember { mutableStateOf(true) }
+    var lobbyList by rememberSaveable { mutableStateOf(ControllerLobby.getLobbies() ?: emptyList()) }
+    var refreshState by rememberSaveable { mutableStateOf(true) }
 
     DisposableEffect(refreshState) {
         val handler = Handler(Looper.getMainLooper())
         val refreshRunnable = object : Runnable {
             override fun run() {
+                lobbyList = emptyList()
                 lobbyList = ControllerLobby.getLobbies()!!
                 selectedItem = null
-                handler.postDelayed(this, 3000)
+                if (refreshState){
+                    handler.postDelayed(this,3000)
+                    Log.e("MainActivity", "Refresh Multi")
+                }
             }
         }
 
-        handler.postDelayed(refreshRunnable, 3000)
+        handler.post(refreshRunnable)
 
         onDispose {
+            Toast.makeText(context, "Au REVOIR UwU", Toast.LENGTH_SHORT).show()
+            refreshState = false
             handler.removeCallbacks(refreshRunnable)
         }
     }
@@ -103,9 +114,10 @@ fun MultiPage() {
                         .weight(1f)
                         .padding(start = 20.dp)
                 )
-
                 Button(
                     onClick = {
+                        refreshState = false
+
                         val intent = Intent(context, CreateLobbyActivity::class.java)
                         context.startActivity(intent)
                     },
@@ -127,6 +139,24 @@ fun MultiPage() {
                 items(lobbyList ?: emptyList()) { lobby ->
                     LobbyItem(lobby, selectedItem == lobby) {
                         selectedItem = it
+
+                        refreshState = false
+
+                        if (ControllerLobby.getNbPlayerInLobby(selectedItem!!.id) < selectedItem!!.nbplayers){
+                            val formDataBuilder = MultipartBody.Builder().setType(MultipartBody.FORM)
+                            formDataBuilder.addFormDataPart("idplayer", MainActivity.idPlayerConnected.toString())
+                            formDataBuilder.addFormDataPart("idlobby", selectedItem!!.id.toString())
+                            formDataBuilder.addFormDataPart("playertime", "0")
+
+                            ControllerUtiliser.createUtiliserByIdLobby(formDataBuilder)
+
+                            val intent = Intent(context, ServerDetailsActivity::class.java)
+                            intent.putExtra("serverName", selectedItem!!.name)
+                            intent.putExtra("lobbyId", selectedItem!!.id)
+                            context.startActivity(intent)
+                        } else {
+                            Toast.makeText(context, "Oh nan, le serveur est déjà plein ! Réessayer plus tard.", Toast.LENGTH_SHORT).show()
+                        }
                     }
                 }
             }
@@ -136,6 +166,8 @@ fun MultiPage() {
 
 @Composable
 fun LobbyItem(lobby: Lobby, isSelected: Boolean, onItemClick: (Lobby) -> Unit) {
+    val nbCurrentPlayer = ControllerLobby.getNbPlayerInLobby(lobby.id)
+
     Row(
         modifier = Modifier
             .fillMaxWidth()
diff --git a/Android/app/src/main/java/com/example/mathseduc/ui/activity_quiz_multi.kt b/Android/app/src/main/java/com/example/mathseduc/ui/activity_quiz_multi.kt
new file mode 100644
index 0000000..48d2f84
--- /dev/null
+++ b/Android/app/src/main/java/com/example/mathseduc/ui/activity_quiz_multi.kt
@@ -0,0 +1,207 @@
+package com.example.mathseduc.ui
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.LinearProgressIndicator
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.example.mathseduc.controllers.ControllerLobby
+import com.example.mathseduc.controllers.ControllerQuestion
+import com.example.mathseduc.ui.theme.Colors
+import kotlinx.coroutines.channels.ticker
+
+
+@Composable
+fun QuizMultiScreen(lobbyId: Int) {
+    var progressBar1Value by remember { mutableStateOf(0.0f) }
+    var chronoValue by remember { mutableStateOf(0.0f) }
+    var listQuestion by remember { mutableStateOf(ControllerQuestion.getQuestionsForLobby(ControllerLobby.getIdQuestionsLobby(lobbyId))) }
+
+    LaunchedEffect(Unit) {
+        val timer = ticker(delayMillis = 100) // Update every 100 milliseconds
+        for (tick in timer) {
+            progressBar1Value += 0.1f // Increment ProgressBar1 value every 100ms
+            chronoValue += 0.1f // Increment Chrono value every 100ms
+            if (chronoValue >= 30f) {
+                // Time's up, do something
+                break
+            }
+        }
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp),
+        verticalArrangement = Arrangement.SpaceBetween
+    ) {
+
+        // ProgressBar1
+        CustomProgressBar(progressBar1Value)
+
+        // Chrono ProgressBar
+        ChronoProgressBar(chronoValue)
+
+        Row(
+            modifier = Modifier
+                .weight(2f)
+                .padding(vertical = 20.dp)
+        ) {
+            Spacer(modifier = Modifier.weight(1f))
+
+            Box(
+                modifier = Modifier
+                    .weight(5f)
+                    .background(color = Colors.Grey, shape = RoundedCornerShape(8.dp))
+            ) {
+                Text(
+                    text = "test",
+                    modifier = Modifier
+                        .padding(16.dp),
+                    color = Colors.White,
+                    fontSize = 20.sp,
+                    textAlign = TextAlign.Center
+                )
+            }
+
+            Spacer(modifier = Modifier.weight(1f))
+        }
+
+        Column(modifier = Modifier.weight(1f)) {
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+            ) {
+                Spacer(modifier = Modifier.weight(0.25f))
+
+                Button(
+                    onClick = { /* Handle button click */ },
+                    modifier = Modifier
+                        .weight(2f),
+                    shape = RoundedCornerShape(15),
+                    colors = ButtonDefaults.buttonColors(Colors.Blue),
+
+                    ) {
+                    Text(text = "Answer1")
+                }
+
+                Spacer(modifier = Modifier.weight(0.5f))
+
+                Button(
+                    onClick = { /* Handle button click */ },
+                    modifier = Modifier
+                        .weight(2f),
+                    shape = RoundedCornerShape(15),
+                    colors = ButtonDefaults.buttonColors(Colors.Green),
+                ) {
+                    Text(text = "Answer2")
+                }
+
+                Spacer(modifier = Modifier.weight(0.25f))
+            }
+
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+            ) {
+                Spacer(modifier = Modifier.weight(0.25f))
+
+                Button(
+                    onClick = { /* Handle button click */ },
+                    modifier = Modifier
+                        .weight(2f),
+                    shape = RoundedCornerShape(15),
+                    colors = ButtonDefaults.buttonColors(Colors.Orange),
+                ) {
+                    Text(text = "Answer3")
+                }
+
+                Spacer(modifier = Modifier.weight(0.5f))
+
+                Button(
+                    onClick = { /* Handle button click */ },
+                    modifier = Modifier
+                        .weight(2f),
+                    shape = RoundedCornerShape(15),
+                    colors = ButtonDefaults.buttonColors(Colors.Purple500),
+                ) {
+                    Text(text = "Answer4")
+                }
+
+                Spacer(modifier = Modifier.weight(0.25f))
+            }
+        }
+
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .weight(1f)
+                .padding(vertical = 10.dp)
+        ) {
+            Spacer(modifier = Modifier.weight(1f))
+
+            Button(
+                onClick = { /* Handle button click (Passer) */ },
+                modifier = Modifier
+                    .weight(2f),
+                shape = RoundedCornerShape(15),
+                colors = ButtonDefaults.buttonColors(Colors.Red),
+            ) {
+                Text(text = "Passer")
+            }
+
+            Spacer(modifier = Modifier.weight(0.15f))
+
+            Button(
+                onClick = {
+                    progressBar1Value += 3f
+                },
+                modifier = Modifier
+                    .weight(2f),
+                shape = RoundedCornerShape(15),
+                colors = ButtonDefaults.buttonColors(Colors.Green),
+            ) {
+                Text(text = "Valider")
+            }
+
+            Spacer(modifier = Modifier.weight(1f))
+        }
+    }
+}
+
+@Composable
+fun CustomProgressBar(progressBarValue: Float) {
+    LinearProgressIndicator(
+        progress = progressBarValue / 100f,
+        modifier = Modifier.fillMaxWidth()
+    )
+}
+
+@Composable
+fun ChronoProgressBar(chronoValue: Float) {
+    CircularProgressIndicator(
+        progress = chronoValue / 30f,
+        modifier = Modifier.padding(horizontal = 10.dp)
+    )
+}