Wolfenstein
The "Wolfenstein" series of video games started with the 1981 stealth-adventure video game "Castle Wolfenstein". It was developed by American programmer Silas Warner, a pioneer in the early eras of video gaming, especially the stealth genre. It was published by his (then) company M.U.S.E. Inc. (Muse Software). The player controls an unnamed American prisoner of war as he steals war files containing information about secret German war plans while avoiding or sometimes killing guards, and tries to escape the fortified Nazi stronghold Castle Wolfenstein, set during World War II. The game is often credited as one of the first video games of the stealth genre, since it focuses more on avoiding or disarming enemies, and killing them is considered a last resort.
The Cave (video game)
Ron Gilbert has been working with adventure games since his days at LucasArts, including several collaborations with Tim Schafer and Dave Grossman; together, they developed games like "Maniac Mansion", its sequel "Day of the Tentacle", and the first games in the "Monkey Island" series. Gilbert left LucasArts in 1992, initially creating his own development studio but then moving on to other games, including contributing to Telltale Games' episodic series, "Tales of Monkey Island" based on the LucasArts series. Meanwhile, Schafer would stay with LucasArts until the adventure game market fell in the late 1990s, and created his own studio, Double Fine Productions, with several of the former LucasArts developers. Though Double Fine struggled with well-received but financially unsuccessful titles "Psychonauts" and "Brütal Legend", it became successful in marketing four smaller games developed during an "Amnesia Fortnight" period in "Brütal Legend"s development between 2010 and 2011.