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".
Gamescience
Gamescience Corp. was started by Phillip E. Orbanes in 1965. In that year, the company published the wargame Vietnam which was reviewed in issue #4 of Strategy and Tactics (S&T) magazine. In 1967 the company published another wargame which Mr. Orbanes designed called Confrontation, which was reviewed in S&T issue #6. In 1968, the company published the wargame, The Battle of Britain designed by Lou Zocchi, which was reviewed in S&T #13. The company was sold before Mr. Orbanes left college.