As part of the course « Projet de programmation » (SINF1124) given by Université catholique de Louvain, I developed a full game software, starting from scratch, named « EXIT ». The main idea of this game was to focus on cooperation between players through a network interface. The purpose is quite simple: players must reach the exit door of the current level by all possible ways. For this, they have several technical supports allowing them to circumvent the various obstacles and unforeseen.