Halo is a science fiction video game series created by Bungie Studios. The Halo trilogy centers around Master Chief Petty Officer SPARTAN-117, or simply "Master Chief", a human cyborg super-soldier equipped with technologically-advanced battle armor, and his Construct AI companion, Cortana. The video games, particularly Halo: Combat Evolved, have been praised as being the best, and most influential, first-person shooters on a game console, with Halo being the Microsoft Xbox's "killer app". This has led to the term "Halo killer" being used to describe console games that aspire to be better than Halo.
