Submarine Attack

In Submarine Attack, the player pilots a whale-shaped submarine called the Nautilus and must defeat a strange shape-shifting monster called the "Meta-creature," which is terrorizing the citizens of Balderia from its hideout under the sea. The player must shoot down enemies using missiles from both the front and rear of the sub, and at the end of each of the six stages, a boss must be defeated with multiple hits. The stages take the player through various underwater environments, including caverns with exploding volcanoes, a sunken version of ancient Egypt, and two mechanical factories inside the Meta-creature's base.