Atlantis

The lost city of Atlantis is under attack. Wave after wave of Gorgon vessels approaches, each armed with weapons capable of destroying part of the city. Command the defensive posts at the city's edges and protect Atlantis from the invaders. Gorgon craft fly across the screen in varying numbers and flight patterns, beginning high in the sky before descending lower. If an enemy reaches a low enough altitude before being destroyed, it fires its weapons and destroys an Atlantis building. Enemy craft increase in speed as the game progresses, and the game ends when every remaining building in the city has been destroyed.

Atlantis is under siege as waves of Gorgon vessels descend on the lost city. Players command Atlantis's outer defenses and must stop the attackers before their weapons destroy every remaining building.