• Sun. Oct 5th, 2025

The Rumored Halo x Call of Duty Collab Gets Painful New Details

New details have come to light about Call of Duty’s rumored crossover with Halo that never materialized. 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 have included “various maps” from Halo coming to Call of Duty as multiplayer maps.

After Microsoft bought Activision, many began to theorize that Master Chief would inevitably come to Call of Duty as a playable character. He never has, and many are wondering why. In 2024, it was reported that the supposed collaboration was “scrapped” for “completely unknown reasons.” Social media user Alaix says they have screenshots from the collaboration but hasn’t released them.

Before this, Microsoft’s Fallout franchise crossed over into Call of Duty, so there was some precedent. Outside of this, Master Chief came to Fortnite years ago.

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