General Morden is back in the third installment of the Metal Slug 3 , with a plan to establish a new world order. The player guides one of the heroes: Marco, Tarma, Eri, or Fio, as they blast their way through side-scrolling levels filled with countless enemies and bosses. The player has to free hostages and can ride bizarre vehicles such as camels, elephants, tanks, and robots.
The Xbox version includes additional game modes, such as Storming the Mothership and Chubby Isle Paradiso, which can be unlocked upon completing the five arcade stages. A co-op mode is available, but no online multiplayer. The player can compare single-player scores using the Xbox Live feature.