This thesis purpose is to compare the effectiveness of collaborative learning against individual learning applied at the context of environment awareness. The game consists in a treasure hunt for wastes: the wastes are hidden all over the world; the task is to find them and recycle them correctly. To study the aforementioned situation, the game has two versions: a single player and a multiplayer mode. The latter based on collaboration as essential element to reach the goal. The project idea is to sensitize the player by placing him in a world, which is coherent with his own environment. The world is set up from official sources of what world’s condition are in order to give an immersive sensation; this choice is due to the concept of situated learning for which the learning is set in an environment that is similar to where the learning material will be applied in future.