Entombed
Entombed is a 1983 maze game for the Atari 2600, developed by Western Technologies and published by U.S. Games. Tom Sloper designed it and Steve Sidley programmed it. You are an archaeologist trapped in catacombs full of zombies, inside a maze that never stops scrolling and is never the same twice. Decades later its maze-building routine puzzled researchers, which makes it one of the more talked-about 2600 cartridges today. You can play it here in your browser.