Capcom has unveiled ambitious plans to evolve its proprietary RE Engine into what it calls an “AI-generation game engine,” outlining a multi-stage programme named Project REX that will gradually reshape the technology powering franchises like Resident Evil, Street Fighter, and Devil May Cry.
The announcement came at Capcom Open Conference RE: 2026 on 2 October, where programmer Satoshi Ishida presented a detailed look at how the studio intends to tackle the growing challenges of modern game development while building on the engine that has underpinned its biggest hits for nearly a decade.
Why Capcom Is Evolving the RE Engine Instead of Starting Over
Rather than building a new engine from scratch, Capcom is opting for an incremental approach — weaving improvements into the existing RE Engine stack over time. According to Ishida, the decision was pragmatic: a full rewrite would block the studio’s ability to ship games for years, something no major publisher can afford in the current landscape.
Ishida identified three core challenges driving the initiative. First, games have become so large that even simple processes now consume enormous amounts of development time. Second, growing team sizes demand tools that are accessible to everyone, not just veteran engineers. Third, integrating AI technology into development workflows has become “an essential condition for optimising future development.”
Project REX is designed to address all three simultaneously, improving development efficiency, runtime performance, tooling, and quality assurance across the board.
How REX Will Unify the Engine for Both Humans and AI
One of the most technically significant aspects of REX is its plan to unify the entire RE Engine environment under what Capcom described as “the world’s most common programming language.” This standardisation serves a dual purpose: it makes the codebase more approachable for new developers, and it allows AI models and automation systems to process code and data flows more consistently.
Capcom is also making certain improvements available as open-source for AI training purposes, signalling a genuine commitment to working alongside machine learning rather than simply bolting it on as an afterthought.
AI as a Development Tool, Not an Asset Factory
Despite the headline-grabbing “AI-generation game engine” language, Capcom was careful to draw clear boundaries around what this means in practice. The studio’s stated vision is a future where it “creates games together with AI” — but that collaboration looks very different from wholesale asset generation.
In a statement from a March 2026 shareholder meeting, Capcom was explicit: “We will not implement AI-generated assets in our games.” Instead, the company plans to use AI “proactively as a technology that contributes to improving the efficiency and productivity of the game development process,” specifically exploring applications in graphics, sound, and programming.
The distinction matters. Where some studios have rushed toward AI-generated textures, models, and dialogue, Capcom is positioning REX as a pipeline accelerator — automating repetitive steps within a large production chain rather than replacing the creative work itself.
What This Means for Capcom’s Future Games
The RE Engine has been Capcom’s technical backbone since Resident Evil 7 launched it in 2017. Every major release since then — from Resident Evil Village and Street Fighter 6 to Monster Hunter Wilds — has run on variations of the same technology. Project REX represents the most significant evolution of that foundation to date.
If successful, REX could allow Capcom to maintain its engine expertise while reducing the development friction that has slowed the industry at large. Larger teams, bigger worlds, and longer production cycles are challenges every major publisher faces; Capcom’s answer is to let AI handle the repetitive plumbing while human developers focus on design and creative direction.
The practical scope of that collaboration remains open — future REX updates will need to demonstrate what “creating games alongside AI” actually looks like for the teams working across Capcom’s catalogue. But the direction is clear: the RE Engine is not being replaced. It is being transformed.
