Wolfenstein
Silas Warner, an American programmer and an employee of software company Muse Software, was a pioneer of early video game development, especially the stealth genre. He had access to computers in college, and when he worked for the IBM Mainframe architectures before joining Muse Software. The computer he used for game-development, P.L.A.T.O., was one of the firsts with multiple functioning terminals and an example of early computer networks. Warner developed, with P.L.A.T.O., a series of classic video games like his flight simulator and arcade shooter. Inspired by the arcade shooter video game "Berzerk" and the 1961 war film "Guns of Navarone", he developed "Castle Wolfenstein", a stealth-adventure video game in which the player controls an unnamed American prisoner of war as he steals German files containing secret war plans, while avoiding, disarming or at times killing hostile guards and trying to escape the fortified Nazi stronghold 'Castle Wolfenstein', set in World War II. The game was published in 1981 by Warner's company M.U.S.E. Inc. (Muse Software).
Mike Pondsmith
In 1994, R. Talsorian Games released Pondsmith's steampunk-themed fantasy role-playing game titled "Castle Falkenstein". The game's mechanics were based on playing cards, instead of dice, and geared towards live action role-playing. "Castle Falkenstein" remains Pondsmith's most critically acclaimed game to date with the 1994 Origins Award for Best Roleplaying Rules, and the 1995 Nigel D. Findley Memorial Award for Best Role-Playing Product recognitions. In 2000, "Castle Fankenstein" was adapted to the "GURPS" system by James Cambias and Phil Masters, and released by "Steve Jackson Games".