A.E. is an action game for the 5200, which can be played by 1-2 people. It was developed by Broderbund and published by Atari.
A.E. is extremely rare. While this doesn't guarantee that the title is sought after by collectors, it does guarantee that the title is nearly impossible to come by, and is likely sought after by collectors desiring a complete collection for the 5200. In good condition, the game is worth about $0.00.