As Marco, Eri, Tarma, or Fio, you must defeat the evil General Morden and his henchman. You'll do this by shooting through his forces in several levels of play. Throughout the levels, you can ride in four different "Slug" vehicles, including the as the Metal Slug, Slug Flyer, Camel Slug, and SlugNoid. You'll also find items that give you different weapons or turn you back to normal if you become fat or get turned into a mummy.
