Halo® is a sci-fi shooter that takes place on a mysterious alien ring-world. Packed with combat, Halo will have you battling on foot, in vehicles, inside and outdoors with Alien and Human weaponry. Your objective: to uncover Halo's horrible secrets and destroy mankind's sworn enemy, the Covenant.

Halo® 2 is the sequel to the highly successful and critically acclaimed Halo®: Combat Evolved. In Halo 2, the saga continues as Master Chief—a genetically enhanced super-soldier—is the only thing standing between the relentless Covenant and the destruction of all humankind.

 

Thanks for this game description goes to: Microsoft