diff --git a/app/src/main/java/com/example/boidelov3/games/game89/Game89GameActivity.java b/app/src/main/java/com/example/boidelov3/games/game89/Game89GameActivity.java
index a18fa31..451c38b 100644
--- a/app/src/main/java/com/example/boidelov3/games/game89/Game89GameActivity.java
+++ b/app/src/main/java/com/example/boidelov3/games/game89/Game89GameActivity.java
@@ -51,6 +51,9 @@ public class Game89GameActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_game89_game);
+
+        // Garder l'écran allumé pendant la partie
+        getWindow().addFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         
         // Get intent data
         ArrayList<String> playerNames = getIntent().getStringArrayListExtra("PLAYERS");
@@ -155,6 +158,9 @@ public class Game89GameActivity extends AppCompatActivity {
         challengeTitleTextView.setText(currentChallenge.getTitle());
         challengeDescriptionTextView.setText(currentChallenge.getDescription());
         
+        // Alerte sonore : le timer est terminé, un défi arrive
+        com.example.boidelov3.utils.SoundManager.getInstance(this).playChallenge();
+
         // Vibrate to alert players
         try {
             android.os.Vibrator vibrator = (android.os.Vibrator) getSystemService(android.content.Context.VIBRATOR_SERVICE);
@@ -274,7 +280,7 @@ public class Game89GameActivity extends AppCompatActivity {
             int count = seekBar.getProgress() + 1; // 1-8
             players.get(playerIndex).addGorgees(count);
             Toast.makeText(this, 
-                players.get(playerIndex).getName() + " boit " + count + " gorgée(s)!", 
+                players.get(playerIndex).getName() + " boit " + count + " gorgée" + (count > 1 ? "s" : "") + " !", 
                 Toast.LENGTH_SHORT).show();
         });
         
@@ -288,10 +294,12 @@ public class Game89GameActivity extends AppCompatActivity {
         
         StringBuilder stats = new StringBuilder();
         for (Game89Player player : players) {
+            int total = player.getTotalGorgees();
             stats.append(player.getName())
                   .append(": ")
-                  .append(player.getTotalGorgees())
-                  .append(" gorgée(s)\n\n");
+                  .append(total)
+                  .append(total > 1 ? " gorgées" : " gorgée")
+                  .append("\n\n");
         }
         
         builder.setMessage(stats.toString());
diff --git a/app/src/main/java/com/example/boidelov3/games/game89/Game89Player.java b/app/src/main/java/com/example/boidelov3/games/game89/Game89Player.java
index 324c5f6..c7c58eb 100644
--- a/app/src/main/java/com/example/boidelov3/games/game89/Game89Player.java
+++ b/app/src/main/java/com/example/boidelov3/games/game89/Game89Player.java
@@ -29,6 +29,6 @@ public class Game89Player {
     
     @Override
     public String toString() {
-        return name + " (" + totalGorgees + " gorgées)";
+        return name + " (" + totalGorgees + (totalGorgees > 1 ? " gorgées)" : " gorgée)");
     }
 }
diff --git a/app/src/main/java/com/example/boidelov3/utils/SoundGenerator.java b/app/src/main/java/com/example/boidelov3/utils/SoundGenerator.java
index dd56507..a637b08 100644
--- a/app/src/main/java/com/example/boidelov3/utils/SoundGenerator.java
+++ b/app/src/main/java/com/example/boidelov3/utils/SoundGenerator.java
@@ -115,6 +115,68 @@ public class SoundGenerator {
         }).start();
     }
 
+    /**
+     * Carillon convivial - annonce la fin d'un timer (nouveau défi)
+     * Notes sinusoïdales do-mi-sol avec décroissance douce, timbre de cloche
+     */
+    public synchronized void playChallenge() {
+        if (isMuted || toneGenerator == null) return;
+        new Thread(() -> {
+            android.media.AudioTrack track = null;
+            try {
+                final int sampleRate = 44100;
+                final double[] frequencies = {523.25, 659.25, 783.99}; // Do5, Mi5, Sol5
+                final double noteDuration = 0.45; // durée de résonance d'une note (s)
+                final double noteSpacing = 0.15;  // décalage entre les notes (s)
+                int totalSamples = (int) ((noteSpacing * 2 + noteDuration) * sampleRate);
+
+                short[] pcm = new short[totalSamples];
+                for (int n = 0; n < frequencies.length; n++) {
+                    double freq = frequencies[n];
+                    int start = (int) (noteSpacing * n * sampleRate);
+                    int length = (int) (noteDuration * sampleRate);
+                    for (int i = 0; i < length && start + i < totalSamples; i++) {
+                        double t = (double) i / sampleRate;
+                        // Attaque rapide + décroissance exponentielle = timbre de cloche
+                        double envelope = Math.min(1.0, t / 0.01) * Math.exp(-t * 5.5);
+                        // Légère harmonique pour enrichir le timbre
+                        double sample = 0.75 * Math.sin(2 * Math.PI * freq * t)
+                                + 0.25 * Math.sin(2 * Math.PI * freq * 2.0 * t);
+                        double value = pcm[start + i] / 32768.0 + sample * envelope * 0.55;
+                        pcm[start + i] = (short) (Math.max(-1.0, Math.min(1.0, value)) * Short.MAX_VALUE);
+                    }
+                }
+
+                track = new android.media.AudioTrack.Builder()
+                        .setAudioAttributes(new android.media.AudioAttributes.Builder()
+                                .setUsage(android.media.AudioAttributes.USAGE_MEDIA)
+                                .setContentType(android.media.AudioAttributes.CONTENT_TYPE_MUSIC)
+                                .build())
+                        .setAudioFormat(new android.media.AudioFormat.Builder()
+                                .setEncoding(android.media.AudioFormat.ENCODING_PCM_16BIT)
+                                .setSampleRate(sampleRate)
+                                .setChannelMask(android.media.AudioFormat.CHANNEL_OUT_MONO)
+                                .build())
+                        .setTransferMode(android.media.AudioTrack.MODE_STREAM)
+                        .setBufferSizeInBytes(sampleRate)
+                        .build();
+                track.play();
+                track.write(pcm, 0, totalSamples);
+                Thread.sleep((long) ((noteSpacing * 2 + noteDuration + 0.15) * 1000));
+            } catch (Exception e) {
+                Log.e("SoundGenerator", "Erreur lors de la lecture du carillon", e);
+            } finally {
+                if (track != null) {
+                    try {
+                        track.stop();
+                    } catch (Exception ignored) {
+                    }
+                    track.release();
+                }
+            }
+        }).start();
+    }
+
     /**
      * Activer/Désactiver le son
      */
diff --git a/app/src/main/java/com/example/boidelov3/utils/SoundManager.java b/app/src/main/java/com/example/boidelov3/utils/SoundManager.java
index 9431fea..92fc0ac 100644
--- a/app/src/main/java/com/example/boidelov3/utils/SoundManager.java
+++ b/app/src/main/java/com/example/boidelov3/utils/SoundManager.java
@@ -64,6 +64,15 @@ public class SoundManager {
             soundGenerator.playFin();
         }
     }
+    /**
+     * Joue un carillon convivial (fin de timer / nouveau défi)
+     */
+    public void playChallenge() {
+        if (soundGenerator != null) {
+            soundGenerator.playChallenge();
+        }
+    }
+
 
     /**
      * Active ou désactive le son