AquaNox runs on a version of Massive Development's own krass engine, a system created to be as versatile and customizable as it is powerful. Technically, the game is intended to set new standards.

As in the original title, AquaNox players take the role of the mercenary Emerald 'Dead Eye' Flint to pilot a variety of high tech submarines through over 30 missions of volatile action and strategic political intrigue. A thick layer of rotting organic material now covers the planet's surface, protecting the ocean depths from the ravages of the nuclear disaster above but also shielding the undersea world from any sunlight. In a continuation of the Archimedean Dynasty story, AquaNox takes place nearly seven centuries in Earth's future, when nuclear devastation has rendered the surface of the planet uninhabitable and forced humankind to build a new civilization on the ocean floor. Officially, AquaNox is a sequel to 1996's Archimedean Dynasty, which was also created by Massive Development. Instead of fighter jets blasting through the clouds above or starships battling in the void of deep space, AquaNox invites virtual pilots to board advanced submarines and explore a dark undersea world rife with sprawling human cities, powerful currents, ruthless pirates, and dangerously enormous creatures of mythological monstrosity. Though sharing basic commonalities with more conventional flight and space combat simulations, AquaNox takes place in a strange environment best accessible through more speculative imagination.

AquaNox is a 3D combat sim set deep beneath the ocean surface on a distant-future Earth.

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