Colonial Conquest is a turn-based strategy video game developed by Strategic Simulations and was released by Strategic Simulations, Inc in 1985 for Commodore 64, Atari 8-bit family and Apple II. It was ported to the Atari ST by Andromeda Software in 1987 and NEC PC-9801 in 1989.
A game titled Colonial Conquest II was released for Amiga in 1994, but is entirely unrelated to the original game by SSI.