#1 I Have No Mouth And I Must Scream
Based on the short story written by and created with the assistance of Harlan Ellison, this classic point-and-click is a bit more than just a mere game, it is more like a piece of interactive, very, very malicious literature. There are five humans left on earth after a worldwide war, and those five are imprisoned by a mad supercomputer, who can alter them at will, made them immortal and tortures them for 109 years before the game begins. Fun stuff.