It seemed like the perfect idea: build a city hidden underneath the sea and populate it with a hand-picked group of scientists, artists, and visionaries. But when the experience goes horribly wrong, it's up to you to descend into the murky depths and decide what will happen to the mutated and dying population.

Genetically modify your body throughout the city and upgrade your weapons using ionic gels, explosives, and poisons. Hack into computers to control this man-made world and give...