You are the ultimate commando - a cybernetically enhanced soldier representing the peak of human military evolution. You are efficient, skilled, and dangerous.

Your situation: In a desperate attempt to keep a conquering alien race called the Covenant from finding Earth, you and a ragtag group of marines flee to a distant uncharted system where you unexpectedly stumble across Halo, an enormous alien artifact in orbit between a gas giant and its moon.

Your objective: Uncover Halo's horrible secret, and destroy mankind's nemesis - the Covenant.

A sci-fi shooter that takes place on a mysterious alien ring-world, Halo will have you battling through amazing indoor and outdoor environments, in vehicles, and on foot with the largest arsenal of futuristic weapons, vehicles, and combat roles of any shooter ever.