The franchise that defined Xbox multiplayer might be getting a Call of Duty studio makeover. A new report reveals that Sledgehammer Games, the studio behind recent Call of Duty entries, was quietly enlisted by Microsoft to develop a Halo multiplayer prototype. The project didn't survive long enough to become anything real, but the fact it happened at all signals how seriously Microsoft is rethinking the future of its most iconic shooter franchise, one that traces its competitive multiplayer roots all the way back to Halo 2.
From prototype to cancelled in under two months
Sledgehammer reportedly started work on the Halo multiplayer prototype in June of this year. By July, it was gone. The scope never got past the basics: player movement and foundational gameplay elements were tested, but nothing that resembled a shippable product came out of it.
That's a remarkably short development window, even for a prototype. It suggests either Microsoft pulled the plug early after seeing the direction, or Sledgehammer's bandwidth simply didn't align with the scope of what Halo needs right now.
The key here is that cancellation doesn't mean the concept is dead. Microsoft is reportedly still exploring whether a Call of Duty studio should take on Halo in some capacity, with no official greenlight yet.
Why Microsoft is looking outside Halo Studios
Halo Studios has had a rough stretch. Halo Infinite, the franchise's most recent mainline entry, failed to sustain the momentum its campaign launch generated. The live-service multiplayer struggled to retain players, and the studio has been working to rebuild trust ever since.
This July's Halo: Campaign Evolved, a remaster of the original game, didn't land the way Microsoft likely hoped. The absence of multiplayer support drew significant criticism, including from the franchise's co-creator. Sales momentum wasn't strong out of the gate either.
The series hasn't matched the cultural dominance it held during the Bungie era, when Halo 2 essentially built the template for console online multiplayer and held millions of players in a vice grip for years. That gap between legacy and current reality is clearly weighing on Microsoft's strategy.
What Sledgehammer actually brings to the table
Sledgehammer isn't a random pick. The studio has shipped multiple Call of Duty titles and has deep experience building large-scale multiplayer systems, progression loops, and the kind of live-service infrastructure that keeps players engaged month over month.
Halo Studios is reportedly developing a new multiplayer game described internally as having a Fortnite-style live-service approach. If that's the direction, Sledgehammer's expertise in exactly that kind of ongoing multiplayer ecosystem makes them a logical collaborator, or even a lead developer, depending on how Microsoft structures things.
The question is whether Halo's identity can survive that kind of production process. Call of Duty and Halo have very different feels, pacing, and community expectations. Porting one studio's methodology onto another franchise's DNA is not a given.
What this means for Halo's next chapter
Nothing is greenlit. No announcement is imminent. But the fact that Microsoft ran even a brief prototype experiment tells you the company is willing to make unconventional moves to get Halo back to relevance.
For fans who grew up grinding ranked matches and dissecting every map in the Halo 2 guides era, the idea of a Call of Duty studio shaping the next Halo multiplayer experience will land very differently depending on who you ask. Some will see it as a smart injection of modern live-service expertise. Others will see it as exactly the kind of decision that got Halo into trouble in the first place.
Microsoft's next move on this front will tell us a lot about whether Halo gets rebuilt from within or reinvented from the outside. Keep an eye on any Halo Studios announcements in the coming months, and check out the full gaming guides library for more coverage as this story develops.
