The classic original Wolfenstein games for DOS.

 

Wolfenstein 3D is a seminal first-person shooter game first released in 1992, pitting the player, a captured American spy, against a horde of WWII-era Nazis ensconced within Castle Wolfenstein. It is widely regarded by critics and game journalists as having helped popularize the genre on the PC, and having established the basic run-and-gun archetype for subsequent FPS games.

 

Shareware

Developers : id Software