diff --git a/src/Game.java b/src/Game.java
index 4074796..07de966 100644
--- a/src/Game.java
+++ b/src/Game.java
@@ -20,7 +20,7 @@ public class Game
 	private ArrayList<GameObserver> obs	= new ArrayList<>();
 
 	private Random random	= new Random();
-	private boolean pause	= false; 
+	private boolean paused	= false;
 
 	public static Game create()
 	{
@@ -86,21 +86,37 @@ public class Game
 		return false;
 	}
 
-	private synchronized void step() throws InterruptedException
+	private void step() throws InterruptedException
 	{
-		// if (pause) wait();
-
 		for (GameObserver o : obs)
 		{
-			if (!o.apply())
+			synchronized (this)
 			{
-				System.err.println("Une erreur s'est produite pendant le jeu.");
-				System.exit(1);
+				// pause du jeu
+				if (paused) wait();
+
+				boolean isSuccess = o.apply();
+				if (!isSuccess)
+				{
+					System.err.println("Une erreur s'est produite pendant le jeu.");
+					System.exit(1);
+				}
 			}
 		}
 
 	}
 
+	public synchronized boolean togglePause()
+	{
+		if (paused) 
+		{
+			notifyAll();
+			paused = false;
+		}
+		else paused = true;
+		return paused;
+	}
+
 	public void run()
 	{
 		if (this.cars == null || this.map == null)
@@ -108,7 +124,6 @@ public class Game
 
 		while (!isFinish())
 		{
-			// notifyAll();
 			try 
 			{
 				step();
diff --git a/src/Main.java b/src/Main.java
index 390fe52..c251c8a 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,11 +1,27 @@
 public class Main {
-	public static void main(String[] args) {
+	public static void main(String[] args) throws InterruptedException {
 		Map m = Map.fromChars(new Character[][] {
 			{'3', '#', '2'},
 			{'#', ' ', 'S'},
 			{'9', '#', 'F'},
 		});
 
+		Thread t = new Thread(() -> {
+			while (true)
+			{
+				try 
+				{
+					Thread.sleep(5000);
+				} 
+				catch (InterruptedException e)
+				{
+					e.printStackTrace();
+				}
+				System.out.println(Game.create().togglePause() ? "stop" : "fini");
+			}
+		});
+		
+		t.start();
 		Game.create()
 			.init(3, m)
 			.run();