Cosmic Avenger is a side scrolling shooter based on the arcade game. You are the pilot of a space fighter on a dangerous mission above a hostile alien planet. Your goal is to earn as many points as possible by using your missiles and bombs to destroy the various enemies you'll encounter. The aliens are armed with deadly missiles, ufo's, fuel domes, barrage guns, torpedoes, mines, tanks and more.
Cosmic Avenger contains elements familiar in other side-shooters, but remains unique with it's single shot game play and changing terrain. The graphics and sound are very good and lets the Colecovision rest on it's laurels as the best arcade replicator of it's era. On the downside, Cosmic Avenger's collision detection is erratic, and I don't like how touching an explosion will destroy your ship. In better shooters (including Scramble) it's always satisfying to fly right through the debris. Also, during the "underwater" stages, the high-pitched sonar "pings" got on my nerves after a while. Still, Cosmic Avenger provides a very exciting brand of space shooting action, and it's fairly addictive as well.