Gears of War 2 references Halo with a "not a natural cave formation" quote. Borderlands includes Halo's control scheme, listing it as "angelic" in the game. The Forza series features Halo's Warthog ...

Someone talks about the existence of a supremely powerful weapon called a Halo! Even Master Chief’s best AI buddy Cortana shows up, played—in a weird meld of live-action and video game CG—by ...