Multivision is a publishing company that never happened. It was founded by Penthouse magazine photographer Eugene Finkei to make adult games for the Atari 2600. The company's main designer was Michael Case who would later move on to design games like BattleTech: A Game of Armored Combat and Metal Gear Solid. The company folded before releasing a single game although two of its prototypes are known to exist: Battle of the Sexes and Harem. Harem was rediscovered and released for free online in 2007. Although Battle of the Sexes is said to have been completed, so far no known copy has ever surfaced.