Halo: Combat Evolved

Halo: Combat Evolved is a 2001 first-person shooter video game developed by Bungie for the Xbox.

In Halo's twenty-sixth century setting, the player assumes the role of the Master Chief, a cybernetically enhanced super-soldier. The player is accompanied by Cortana, an artificial intelligence who occupies the Master Chief's neural interface. Players battle various aliens on foot and in vehicles as they attempt to uncover the secrets of the eponymous Halo, a ring-shaped artificial planet.