Donkey, or more properly DONKEY.BAS, was computer game co-written by Bill Gates in 1981. It was included in early versions of the PC-DOS operating system and had players drive a car down a street while avoiding donkeys. Why there were so many donkeys on the road is a mystery.
Today, Donkey is available for the iPhone. It's a fun example of an 8-bit game with chunky graphics and super simple action. Tap to change lanes.
Take it from an old fogie: Donkey is fun and worth US$0.99. You wouldn't have your precious Zelda without it.