Developer: id Software
Release Date: May 5, 1992
Source Code Release Date: August 1995
Wolfenstein 3-D is the granddaddy to all the modern first person shooters that came after it. Released as shareware in 1992 it launched the independent career of id Software that would result in DOOM and Quake. Though simplistic by today's standards, it still holds up as a fun maze game with the occasional Nazi to shoot.