diff --git a/modules/levelSelection.mjs b/modules/levelSelection.mjs
index f51c1f0..9f6b89f 100644
--- a/modules/levelSelection.mjs
+++ b/modules/levelSelection.mjs
@@ -2,10 +2,9 @@ import { levelsBlueprint } from '/modules/levels.mjs'
 import { generatePlayground } from '/modules/playground.mjs'
 import { Timer } from '/modules/timer.mjs'
 
+const prionicSequence = [0, 2, 6, 12, 20, 30, 42];
+
 export const selectLevel = (ctx, gameState, id) => {
-  console.log(ctx);
-  console.log(gameState);
-  console.log(id);
   gameState.playground = generatePlayground(levelsBlueprint[id].structure, gameState.width, gameState.height);
   // TODO transfer expireFunction without a fail
   // const expireFunc = () => {gameState.timer.expireFunction();};
@@ -22,7 +21,7 @@ export const fillLevelsSelection = (gameState, ctx) => {
     selectionButton.addEventListener("click", (click) => {
       selectLevel(ctx, gameState, click.srcElement.getAttribute("array-index"));
     });
-    selectionButton.innerText = "Level " + i;
+    selectionButton.innerText = "Level " + prionicSequence[i];
     listElement.appendChild(selectionButton);
     levelList.appendChild(listElement);
   }
@@ -35,17 +34,23 @@ export class LevelManager {
     self.winFunction = winFunction;
   }
 
+  getFirstUncompleted() {
+    for( let i = 0; i < self.Completed.size; i++ ) {
+      if (!self.Completed[i]) {
+        return i;
+      }
+    }
+  }
+
   next(ctx, gameState) {
     self.Completed[self.CurrentLevelId] = true;
-    console.log(self.Completed);
     let allLevelsFinished = self.Completed.reduce((a, b) => {
       return a && b;
     }, true);
-    console.log(allLevelsFinished);
     if (allLevelsFinished) {
       self.winFunction();
     }
-    self.CurrentLevelId++;
+    self.CurrentLevelId = getFirstUncompleted();
     selectLevel(ctx, gameState, self.CurrentLevelId);
   }
 }
diff --git a/modules/levels.mjs b/modules/levels.mjs
index e5f0289..605c1b4 100644
--- a/modules/levels.mjs
+++ b/modules/levels.mjs
@@ -40,8 +40,25 @@ const level3Blueprint = {
   time: 8000,
 }
 
+const level4Blueprint = {
+  structure: [
+    [Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Floor, Square.Floor, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Floor, Square.Box, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Wall, Square.Destination, Square.Floor, Square.Floor, Square.Floor, Square.Floor, Square.Floor, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Floor, Square.Floor, Square.Box, Square.Floor, Square.Floor, Square.Destination, Square.Wall,],
+    [Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Box, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Floor, Square.Floor, Square.Wall, Square.Player, Square.Floor, Square.Box, Square.Floor, Square.Floor, Square.Destination, Square.Wall,],
+    [Square.Wall, Square.Floor, Square.Floor, Square.Floor, Square.Floor, Square.Floor, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Destination, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall,],
+    [Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall, Square.Wall,],
+  ],
+  time: 3000,
+}
+
 export const levelsBlueprint = [
   level1Blueprint,
-  // level2Blueprint,
-  // level3Blueprint,
-]
+  level2Blueprint,
+  level3Blueprint,
+  level4Blueprint,
+];
diff --git a/script.js b/script.js
index dfbb6e0..eecf2ec 100644
--- a/script.js
+++ b/script.js
@@ -27,6 +27,7 @@ let gameState = {
   playable: false,
   levelManager: new LevelManager( () => {
     alert("Toutes les bottes sont rangées");
+    gameState.timer.stop();
   } ),
   levelId: 0,
 };
diff --git a/todo.md b/todo.md
index c726cee..7c7a93c 100644
--- a/todo.md
+++ b/todo.md
@@ -19,6 +19,7 @@
     * Table with filled usernames
 
 ## Insectes
+
     * Error when last level is successfully finished
     * Size of the canvas: tiles not squared with some levels
-    * alt tab starts game
\ No newline at end of file
+    * Timer does not stop on win