The original Halo has been ported to everything from Android to the N64 (?!)

Credit: Hadlee Simons / Android Authority TL;DR Halo for the original Xbox has been unofficially ported to a variety of platforms, including Android, Windows, and Linux. The game’s multiplayer modes have even been ported to the Nintendo 64. There’s also an unofficial port of the game for ANBERNICs Linux-powered handhelds.