High Quality Content by WIKIPEDIA articles! Master of Orion (MoO or MOO) is a turn-based, 4X science fiction computer strategy game released in 1993 by MicroProse on the MS-DOS and Mac OS operating systems. The purpose of the game is to lead one of ten races to dominate the galaxy through a combination of diplomacy and conquest while developing technology, exploring and colonizing star systems. The game uses a point-and-click interface as well as keyboard shortcuts to control the management of colonies, technology, ship construction, diplomacy and combat. The name is a reference to the Orion system, the game universe's conquerable homeworld of a mythical race that once controlled the galaxy. Two sequels were created, Master of Orion II: Battle at Antares in 1996 and Master of Orion III in 2003, as well as the open source freeware FreeOrion which is loosely based on the series. A prototype was developed under the name Star Lords though it was only released as freeware in 2001 as part of the promotion for MoO III.