Master of Orion II: Battle at Antares (MOO2) is a 4X turn-based strategy game set in space, designed by Steve Barcia and Ken Burd, and developed by Simtex, who developed its predecessor Master of Orion. The PC version was published by MicroProse in 1996, and the Apple Macintosh version a year later by MacSoft, in partnership with MicroProse. Despite its age, the game has retained a large fan base, and is still played online.