X-COM: Terror From The Deep

The war continues... X-COM: UFO Defense put you on a galactic battlefield. X-COM: Terror from the Deep takes alien terror to a whole new dimension. Seeking an advantage for the weakened Earth, X-COM's enemies in space unexpectedly change their strategy and launch a powerful second front against Earth. In the dark depths of the vast oceans, long-dormant forces are awakened by revival signals sent through the galactic silence by their interstellar brothers and sisters. Slowly but surely, an army of alien sea creatures is awakening from hibernation. Your battle now extends to the strange new worlds of the deep, where superior alien technologies threaten the survival of your planet Earth.