InvalidateTheWorld.post()
 
     def succeed(self):
+        raise NotImplementedError("Success not implemented.")
         from naja.scenes.menu import MenuScene
         sound.play_sound('chirp.ogg', volume=0.5)
         SceneChangeEvent.post(MenuScene)
         else:
             self.succeed()
 
+    def succeed(self):
+        from naja.scenes.menu import MenuScene
+        sound.play_sound('chirp.ogg', volume=0.5)
+        SceneChangeEvent.post(MenuScene)
+
 
 class LoadGameScene(LoadSaveGameBase):
     def perform_action(self, slot_num):
             self.succeed()
         else:
             self.fail()
+
+    def succeed(self):
+        from naja.scenes.game import GameScene
+        sound.play_sound('chirp.ogg', volume=0.5)
+        SceneChangeEvent.post(GameScene)