Zombies Ate My Neighbors is a humorous take on old B-movies.  Each level has its own theme, where you fight zombies, chainsaw murderers, and aliens. The game is and overhead shooter game, and the goal is to save all of the normal people from danger.  There are several types of guns, including bazookas, as well as potions that turn you into a monster.  Definitely a top game for the SNES.