A port of the classic computer game, A.E. is a most unusual 5200 prototype. It was never announced by Atari nor was it mentioned in any internal documents. In fact A.E. just appeared out of the blue one day when a collector found a copy in a box of old 5200 prototypes. Why Atari was considering porting a two year old computer game to the 5200 is unclear, but the results were interesting.