The game has a single-player campaign, playable from two sides (more campaigns have been made by the community since release), and many maps, both included and user-created that can be played in Hotseat mode, over a LAN, on the Internet, or by email (PBEM). Up to 12 players can participate in a single game, depending on the map. Simultaneous turns are only available in single player and live multiplayer games; PBEM and hotseat games, and all combat, use the sequential turn system.