Free Download :TripleA 1.8.0.9

A Free Strategy and Board Game free download  with Online Multiplayer and Single Player vs AI, as well as over 100 games and maps.

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.

Comes with 11 games and maps come with the download, but over 60 more user-created maps and over 100 user-created games can be downloaded from inside the TripleA program. Great for playing Axis & Allies online free.