A report a few days ago suggested Killzone could return. Guerrilla Games is reportedly working with an external studio on a reboot of the long-dormant PlayStation shooter series. People Can Fly is frequently mentioned in this context. Now it’s worth taking a closer look at the mysterious Project Delta, because one thing is officially certain: Sony has not only begun collaborating with the shooter studio but has already extended the partnership multiple times.
In our previous article, we reported that Killzone could indeed return, with People Can Fly rumored as the development partner. That link remains unconfirmed, yet People Can Fly’s official corporate documents show that the Sony project continued past a brief prototype phase.
Sony and People Can Fly have collaborated since March 2025.
The official history of Project Delta begins on March 13, 2025, when People Can Fly signed a production contract with Sony Interactive Entertainment to create a prototype for a new game codenamed Project Delta. One phrase in the company’s announcement stands out.
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The project is based on intellectual property owned by Sony Interactive Entertainment, so it is not a new independent brand from People Can Fly that is merely being published by PlayStation. Sony is providing the underlying IP. To this day, the specific brand has not been publicly disclosed.
Sony has already extended the contract twice.
That detail is key to the ongoing Killzone rumor. People Can Fly later released more information about the collaboration. According to that data, the original contract was first extended with an addendum dated November 10, 2025. But that wasn’t the end of it.
A second extension arrived on April 2, 2026, and People Can Fly confirmed that development of the Project Delta prototype would continue. This means Sony did not end the project after the initial phase and instead commissioned additional work over more than a year.
This Is Not Yet a Killzone Confirmation
As tempting as the connection may seem, one crucial hurdle remains: People Can Fly refers only to “Project Delta” in its official documents. The name “Killzone” does not appear there. Neither Sony Interactive Entertainment nor Guerrilla Games has yet confirmed that People Can Fly is working on the shooter series.
That link comes only from the latest report, which says Guerrilla is teaming up with an external developer on a possible Killzone remake or remaster, and several hints point to People Can Fly. An officially confirmed Sony project plus a fresh Killzone rumor do not equal an official Killzone announcement.
Nevertheless, this makes Project Delta significantly more interesting
However, the two extensions add important context. The original contract labeled Project Delta a prototype. Such prototypes do not always become full games; publishers use this phase to test core gameplay, technology, and workflows.
If the concept doesn’t work, a project can subsequently be shelved. In the case of Project Delta, however, the collaboration continued. Sony initially extended the contract in November 2025 and then again in April 2026. This doesn’t prove that a full-fledged game is now in production. It does, however, show that Sony apparently remained interested in the project and continued to fund further development work.
People Can Fly would be a good fit for Killzone.
The studio has decades of shooter experience, having worked on Bulletstorm, Outriders, Gears of War: Judgment, and—most recently—supporting The Coalition on Gears of War: E-Day. 
On paper, this wouldn’t be a surprising choice, especially for a reboot.
Guerrilla Games has focused on Horizon for years and is juggling several major projects, so an external partner could handle much of the production while Guerrilla maintains creative and technical oversight. Sony already follows this model for other brands.
A remake of the first Killzone remains the most likely candidate
It’s also unclear what form this potential return might take. The original report mentions a new version and cites both a remaster and a remake as possibilities. The first Killzone from 2004 is mentioned particularly often. That would certainly make sense from Sony’s perspective.
Rather than green-lighting a brand-new, high-budget main entry after more than a decade, PlayStation could first gauge current interest in the franchise. A remake would also modernize the story and gameplay for a new audience, and the original Killzone would especially benefit from a technical reinterpretation.
The next clues about Project Delta will be crucial.
This creates an interesting puzzle at the moment. Officially, we know: Sony owns the IP behind Project Delta. People Can Fly is developing it on Sony’s behalf. The contract has already been extended twice. And the project remained active at least through 2026.
However, the key question remains unconfirmed: Is Project Delta actually Killzone? If new company documents, job postings, or other insider information were to confirm this connection in the future, the current rumor would gain significant credibility. Until then, Killzone remains officially unannounced.
The fact that Sony’s secret project with People Can Fly has continued to receive support through multiple development phases makes this lead far more compelling than a typical short-lived rumor. Let us know your thoughts in the comments.
