Ten days after Microsoft confirmed it was handing the next mainline Halo game to Activision, the first real details about what that game might actually be have started to leak out — and they point toward a much bigger swing than anyone expected. According to Eurogamer, which relayed claims from Halo-focused reporter Rebs Gaming, Activision has already scrapped one approach to the new Halo and is now considering a full reboot of the franchise, potentially telling Master Chief’s origin story from scratch.

What the report actually claims

Rebs says the same anonymous source who previously fed them accurate information about the cancelled Halo: Campaign Evolved project told them Activision’s first instinct was to split the next Halo into two separate games: a free-to-play multiplayer title and a standalone single-player campaign. Sledgehammer Games — the Call of Duty: Advanced Warfare and WWII studio — reportedly built early prototypes of basic mechanics, including player movement, for those concepts, apparently using Infinity Ward’s engine, though that detail says nothing about what technology the finished game will actually run on.

That split approach didn’t survive. The source says Activision has since abandoned the two-game plan in favor of building one full, unified Halo title, and that the direction under consideration now is a complete reboot — potentially an origin story that reintroduces Master Chief rather than continuing directly from Halo Infinite’s unresolved cliffhanger.

Why this needs a big asterisk

None of this is confirmed. Microsoft’s September 22 announcement — which we covered when Xbox handed Halo to Activision and folded Obsidian into Bethesda as part of a wider restructuring — confirmed only that a newly assembled Activision team, operating separately from Call of Duty, would build the next Halo game. It said nothing about a reboot, nothing about Sledgehammer Games, and nothing about engine choice. Everything specific in this new report traces back to one anonymous source relayed through a single leaker’s video, and Activision and Microsoft haven’t commented on any of it publicly. Treat the reboot and origin-story framing as a direction being discussed internally, not a finalized plan — plenty of games get prototyped one way and ship another.

It’s also worth noting how thin the coverage still is. Beyond Eurogamer’s original write-up and a follow-up from GameSpot, the claims have mostly circulated through smaller aggregator sites rather than the rest of the major gaming press, which hasn’t independently corroborated any of the specifics yet. For a story touching Microsoft’s biggest first-party franchise, that’s a notably narrow trail — this is still very early-stage reporting, not a story that’s broken wide.

Why it’s plausible anyway

Taken with a grain of salt, the shape of the report lines up with what Microsoft already told us. Handing Halo to a studio built around Call of Duty’s yearly release cadence, rather than keeping it inside the dedicated studio formerly known as 343 Industries, always read as a signal that Microsoft wanted a structural reset for the franchise, not a direct continuation under new management. A full reboot — especially one that goes back to Master Chief’s origins rather than resolving Infinite’s cliffhanger — would be the clearest possible version of that reset: it lets Activision tell its own story instead of inheriting over a decade of increasingly tangled canon.

The abandoned split-game plan also fits a pattern Activision knows well from Call of Duty, where separate multiplayer and campaign teams are normal. Reportedly walking that plan back for Halo suggests Activision concluded the franchise needed to launch as one cohesive package to make a real statement, rather than as a live-service multiplayer game with a campaign bolted on.

What to watch next

If this reporting holds up, the real signal to watch for is whether Microsoft or Activision ever confirms a reboot directly, since that would be a far bigger break with Halo’s established story than anything revealed in the September restructuring itself. Our earlier coverage noted that Insider Gaming had described Xbox’s restructuring as only “three-quarters” finished — so more specifics, official or otherwise, are likely to keep surfacing as Activision’s new Halo team takes shape.

For the full account of how Halo ended up at Activision in the first place, read our coverage of Xbox’s September restructuring, and for the earlier cuts that set that reshuffling in motion, see our piece on Xbox’s 2026 reset.