The aim of this article is first to present V.E.Ga.S., a tool which intend to classify video games, study their nature and to corroborate hypothesis by a pragmatic approach. It consists in studying a significant number of video games in order to index their composition of elementary “game bricks”. Basing our study on this bricks and crossing them, we try to classify and study video games. In a second time, this paper presents the classification deduced from the results of V.E.Ga.S.