Horizon 3 is reportedly in internal testing, according to comments from two well-known PlayStation industry figures who surfaced information about the game's development status in July 2026. The picture they paint is one of a game that exists as a playable build, has been seen by external testers, and is following a recognizable Guerrilla Games development pattern, while also one where an official announcement from Sony or Guerrilla remains absent.
This article breaks down who said what, what credibility each source carries, and exactly which parts of this story are verified versus speculative.
The Sources: What They Said
Colin Moriarty and David Jaffe
According to information from insider circles including industry expert Colin Moriarty and game designer David Jaffe, selected playtesters and analysts already have access to a build of Horizon 3 through internal trial play sessions described as "mock reviews."
Moriarty said his own sources shared similar impressions, suggesting longtime fans should expect more of the exploration, machine combat, and open-world gameplay that have defined the franchise.
Both Moriarty and Jaffe are credible figures in the PlayStation ecosystem. Moriarty is a veteran journalist and podcaster with a long track record covering PlayStation, and Jaffe is the creator of God of War and Twisted Metal. Neither is an anonymous leaker account.
Jason Schreier (Bloomberg)
In February 2026, Jason Schreier confirmed that "Horizon 3 is already in development" and observed that AAA games typically take five or more years to develop, making a later launch not a delay but the normal course of progress.
Schreier's confirmation is the most credible single data point available. A development confirmation from Bloomberg's senior gaming journalist carries significantly more weight than any anonymous leaker.
What the Official Sources Have Said
Horizon 3 has not been officially announced by Guerrilla Games. However, it has been unofficially mentioned by various official sources. In April 2023, a Guerrilla Games post confirmed they would be "expanding the world of Horizon with Aloy's next adventure and our exciting online project."
During the official announcement of Horizon Hunters Gathering in February 2026, Guerrilla's Studio Director Jan-Bart van Beek stated: "I want to be very clear about one thing. We absolutely love making single-player games, and we're going to keep making them."
Fact vs Rumor: A Clean Separation
| Claim | Source | Credibility | Status |
|---|---|---|---|
| Horizon 3 is in development | Guerrilla Games (2023) / Schreier (2026) | High | Confirmed |
| Most of the studio is on Hunters Gathering | Jason Schreier | High | Confirmed |
| A playable build exists and has been tested externally | Moriarty / Jaffe | Medium-High | Strongly rumored |
| Launch targeting 2027, cross-gen PS5/PS6 | TCMFGames leaker | Low-Medium | Unverified |
| Nemesis confirmed as main antagonist | Multiple leakers | Low-Medium | Unverified |
The Hunters Gathering Factor
According to Schreier, "most of the studio" is involved with Horizon Hunters Gathering. Some fans believed Guerrilla had dedicated only a small team to the project. If that's not the case, fans of narrative-driven adventures have reason to worry about the timeline.
This does not mean Horizon 3 is paused. It means the full studio capacity is currently focused on shipping Hunters Gathering. A smaller team working on early production or pre-production of Horizon 3 in parallel is consistent with how major studios typically structure multi-title development.
Internal Testing Checklist
Confirmed by credible sources:
Horizon 3 exists as an active development project (Guerrilla, 2023)
The game is confirmed in development by Jason Schreier (February 2026)
Guerrilla is committed to future single-player games (van Beek, February 2026)
A playable build has reportedly been seen by external testers (Moriarty / Jaffe)
Indicated but not verified:
The build is in a polished or near-final state
A 2027 launch window is being targeted internally
The game is confirmed for PS5 and PS6 simultaneously
Not confirmed at all:
Official title
Official release date
Public announcement or trailer
Nemesis officially named as antagonist
What Comes Next Before a Public Announcement
- Hunters Gathering ships: The studio's primary focus completes its launch cycle.
- Full team consolidates on Horizon 3: Development shifts to full production mode with complete studio resources.
- Sony reveals at a showcase: A State of Play or PlayStation Showcase event becomes the platform for a formal reveal, likely including a CGI or in-engine trailer.
Pro Tips: How to Follow This Story
- Prioritize Jason Schreier and Colin Moriarty as primary sources: For anything PlayStation-related, these two figures have the most consistent and credible track records. Weight their comments significantly higher than anonymous leaker accounts.
- Do not lock in a 2027 date: Leaker timelines for major PlayStation games have a poor track record of accuracy. The 2027 window comes from lower-credibility sources. Schreier's earlier statements that the game is "a long way off" remain the most grounded position.
- Watch for Guerrilla staff movements: When the studio begins visibly staffing up for a major single-player project after Hunters Gathering's launch, that is a structural indicator that Horizon 3 has entered full production.
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