GMT Games
GMT Games is a California-based wargaming publisher founded in 1990. The current management and creative team includes Tony Curtis, Rodger MacGowan, Mark Simonitch, and Andy Lewis. The company has become well known for graphically attractive games that range from "monster games", of many maps and counters, to quite simple games suitable for introducing new players to wargaming. They also produce card games and family games. "The Washington Post" called GMT "the modern hobby's highest-profile wargame publisher".
Origins Game Fair
Avalon Hill produced the first commercial war games back in 1958. In a nod to Baltimore's position as the home of Avalon Hill and the birthplace of the commercial wargame hobby, Don Greenwood, a game designer with Avalon Hill and founder of the convention, suggested calling the show "Origins".
Over the next few years, both Avalon Hill and SPI (another wargame company) ran the show. As the show continued expanding, the Game Manufacturers Association assumed management in 1978.