- Developer: Walter Bright,Mark Baldwin,(1987–1990s),Bob Rakosky (1990s),Mark Kinkead (2001–present)
- Initial release: 1977
- Tags: strategy, wargame, 4x
- Platforms: PDP-10, (1977), ~1987 ([[Atari ST]], Amiga, Commodore 64, Apple II, Macintosh, MS-DOS, ), Windows, (1993, 2002, 2004)
- Links:
