Call of Duty Halo collab would’ve had maps Notable Call of Duty leaker TheGhostOfHope claims Modern Warfare 3 developer Sledgehammer Games had planned a huge crossover between Call of Duty and Halo.

TheGhostOfHope, who is a reliable source of unannounced Call of Duty information, said Sledgehammer Games was planning a "huge" collaboration with Halo for 2023's Modern Warfare III. This would ...