SkiFree
You picked a mode, pointed your pixel skier downhill, and raced a Windows 3.0 mountain — until the moment at 2,000 meters when something terrible crested the hill behind you. The Abominable Snow Monster of SkiFree ate a generation of office workers, and most of them never learned about the F key.
In October 1991, Microsoft shipped Entertainment Pack 3 for Windows 3.0, and tucked inside was SkiFree, written by Microsoft programmer Chris Pirih. The idea was older than Windows: as a student, Pirih had written a text-based game called Ski in Fortran on a VAX system, and he later rewrote it in C for Windows under the working name WinSki. The finished game shipped with three modes — slalom, freestyle (tricks off ramps for style points), and tree slalom — and an appeal that was simple and escalating.
Then came the monster. At the 2,000-meter mark, the Abominable Snow Monster appears on the slope and comes for you — arms up, jaws working, a gray blur that ends your run by eating you. It became the most famous thing about the game: a game over you didn't consent to, arriving on a schedule you learned by heart. Players eventually discovered the escape — the F key gives a speed boost fast enough to outrun the beast — but most people never knew. Most people got eaten, every single run, and kept playing anyway.
SkiFree spread through offices and family PCs the way the whole Entertainment Pack did, sitting in the Games folder alongside the Windows fixtures Minesweeper and Solitaire — games you played not because anyone chose them, but because they were there. In 2005, Pirih rediscovered the source code and released a free 32-bit version on his website, keeping the monster fed for the modern era.
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