Hopefullly everyone here will have played SkiFree. It was a free PC game from the early '90s, the aim of which was to ski down a mountain, avoiding obstacles. However, the most memorable thing about the game was the abominable snowman who would chase and eat you after your ski fun. No matter what you did, at the end of your run, this yeti would appear and eat you. He was innescapable. XKCD just did a comic about it.
Click the comic to embiggen.