Although there are a few minor bugs and some artwork left to be fixed/added, the game is now fully playable and has all 45 levels, plus 2 secret levels.
The game plays much like Midway's calssic Rampage game. The premise is a little different though. In Ravage you play the role of one-of-three genetically engineered space pirates. Your objective is to loot and plunder Earth's solar system and leave it in a state of chaos. You'll face various enemies unique to each of the 9 planets, as well as several bosses.
(Edit: Even though Pluto is no longer a planet it is still in the game!)