TripleA
We are the developers of a free online strategy and board game called TripleA. It is open source, runs using Java (can run on Windows, Mac, Linux, etc.), and supports such features as user created content and games/maps, an AI, multiplayer capability and an online lobby, savegames, play by email, and single player support.
TripleA
FreePlay a turn based strategy game and board game, with single player and online multiplayer.
LinuxTripleA
FreePlay a turn based strategy game and board game, with single player and online multiplayer.
WindowsTripleA
FreePlay a turn based strategy game, with single player and online multiplayer.
Mac