You're the captain of the latest, meanest, baddest attack sub in the sea. And it's a good thing too, 'cause you're gonna need every ounce of firepower you can muster to complete this mission! It's time to load torpedoes and open launch bays. The enemy is at full mobilization. Get ready for the wildest underwater action yet. Down periscope and blow 'em to squid spit! Hundreds of enemies to annihilate, six battle zones to explore and conquer. Dozens of weapon combinations and power-ups: surface-to-air missiles, depth charges, supersonic torpedoes, floating mines and more!