Ars Regendi is a massive multiplayer browser-based game that simulates states in a very realistic way. The virtual regents can watch all consequences of their political and economical decisions in numbers and diagrams, which are generated in a very complex formula system. Also, Ars Regendi became a meeting point for politically interested gamers of all nations who discuss at a very high level about alternative political, social and economical concepts. In addition, Ars Regendi will be extended to a complete geopolitical simulator soon.