Players choose from Marco, Tarma, Eri, and Fio and then set their sights on wiping out Morden's newly remobilized Rebellion Army. Just like the original Metal Slug, players blaze a trail by shooting and jumping, but Metal Slug 2 adds a new arsenal for you to command, including a heavy machine gun, a shotgun, and even a laser gun, providing players a battle rich with variety to enjoy. Not only that, but battle effects are packed in as well - players turn into mummies after getting caught in poison gas coughed up by mummies. Characters also turn fat, but get an attack-strength upgrade, after picking up too many food items.