Caliber .50MD Mega Drive, 1991 Caliber .50 Western only. This game was never released in Japan on the Mega Drive. PlatformMega Drive ReleasedNorth America, December 1991 Released in JapanNever PublisherMentrix Software Mediaphysical Releases North America Caliber .50 December 1991, Mentrix Software, physical Add to my collection Open in Tana