Kalypso Media Group is a German video game developer and publisher. Founded in 2006 in Worms, the group includes four companies, in Germany, the United Kingdom and the United States and has studios, Realmforge Studios, Gaming Minds Studios, Claymore Game Studios, and Nine Worlds Studios. Kalypso is best known for publishing Tropico, Sudden Strike, Dungeons and Railway Empire series. Source: Wikipedia (en)