In Halo’s twenty-sixth century setting, the player assumes the role of the Master Chief, a cybernetic enhanced SPARTAN 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 Halo, a ring-shaped structure.
Many game magazines have praised Halo as one of the best and most important games of all time. The game’s popularity has led to labels such as Halo clone and Halo killer, applied respectively to games either similar to or anticipated to be better than Halo. In addition, the game inspired and was used in the fan-created Red vs. Blue video series, which is credited as the first big success of machinima—the technique of using real-time 3D engines to create animated films.