Halo:
Halo is a sci-fi shooter that takes place on a mysterious alien ringed 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:
"Halo 2" is the sequel to the highly successful and critically acclaimed game "Halo: Combat Evolved." In "Halo 2," the saga continues as Master Chief, a genetically enhanced supersoldier, is the only thing standing between the relentless Covenant and the destruction of all humankind.

Halo 2 Multiplayer Map Pack:
The multiplayer expansion pack contains nine new multiplayer maps to push gamers' skills to their limits. The retail package also contains two new videos: an animated side-story from the single-player story in New Mombasa and a mini-documentary that includes interviews with the map designers, combat strategies and fly-throughs of the new maps. The retail pack also allows gamers who prefer offline play via system link and split-screen to upgrade their Halo 2 experience with new maps.