EXCOM stands for EXtensible Combat Open Modeller, and is a game engine inspired by the old UFO and XCOM games of the 1990s. EXCOM aims to be flexible and democratic in its approach, allowing the players and "campaign designers" to suggest new options, and then easily choose which ones they wish to use. EXCOM uses the Quake 2 engine, but is a complete game in itself, not a mod or Total Conversion kit. It is supported on MS Windows, MacOS X, and Linux.... read more