one of the best 2600 shooters, imo. the appeal here is the simplicity - think Galaga or Phoenix, but with weird, demon-bird-aliens as enemies and some really tricky but addictive & tight gameplay. this one was put out by Imagic, who i'd consider the best company working for the console at the time. check out their other games too, especially Atlantis (duh), Dragonfire, Cosmic Ark, and No Escape.