Metal Slug 3 Collect weapons and shoot it out with 20 single-player missions, across 5 deadly multiplayer maps Fight the forces of evil in South American deserts, underwater bio-labs and other exotic locales Journey into outer space to encounter the vile mastermind Morden in his stronghold, facing zombies, giant crabs and other freakish monsters Use all kinds of intense weaponry - Everything from handguns and grenades to power-up guns and cannons Find alternate routes and new stages with Crossroad Entrances on each level