Halo: Combat Evolved

You're thrust into a desperate war for humanity's survival, trading cover fire with alien forces across an ancient, mysterious ring-world that hums with danger and secrets. Every encounter demands sharp reflexes and tactical positioning as you fight through sprawling environments where the next corner could bring overwhelming odds.

Bent on Humankind's extermination, a powerful fellowship of alien races known as the Covenant is wiping out Earth's fledgling interstellar empire. Climb into the boots of Master Chief, a biologically altered super-soldier, as you and the other surviving defenders of a devastated colony-world make a desperate attempt to lure the alien fleet away from earth. Shot down and marooned on the ancient ring-world Halo, you begin a guerilla-war against the Covenant. Fight for humanity against an alien onslaught as you race to uncover the mysteries of Halo.