Capcom is rebuilding RE Engine into an 'AI-generation' engine
The 'REX' project will fold AI and machine learning into the engine behind Resident Evil and Monster Hunter, as Capcom chases a future where it 'creates games together with AI'.
Capcom has set out plans to pull artificial intelligence deep into the tools it builds its games with. At its own technology conference, Capcom Open Conference RE: 2026, held on 2 October, programmer Satoshi Ishida described the goal as evolving RE Engine — the in-house technology behind nearly every modern Capcom release — into an “AI-generation game engine”.
What the REX project changes
The programme is called REX, and Capcom says it will add a set of upgrades to the existing engine rather than start again from scratch. The presentation described six components that fold AI and machine learning into RE Engine. Among them, Re:Dox is a data-handling system that translates different kinds of data into a common set of rules for faster processing, while RE:UI brings AI-assisted optimisation to the engine's development tools. A further tool, RE: Runtime, is built to animate large groups of objects and characters together rather than one at a time, and RE: Flows is designed to turn an idea for a game mechanic into a standard programming language.
Why Capcom wants AI in the engine
Capcom's reasons are practical rather than futuristic. Modern games carry so much data that managing it and making changes is slow, more than 2,000 developers now work with RE Engine — including staff of many nationalities — so the company wants a system everyone can understand, and it argues that AI is essential for keeping development efficient. Because REX leans on a more common programming language, Ishida said the engine's code will be easier for AI to understand, opening the way to automatically generated programs and automated test runs that hunt for bugs. Capcom also plans to publish some of the technology so that others can use it to help train AI models.
Not an engine for AI art
Capcom has drawn a firm line around where that AI may be used. Shinichi Inoue, its vice-president of game development platform and AI solutions, has said the company treats AI “not for creating art, but for unleashing the potential of creators”, and Capcom has said it will not put AI-generated content into its games. RE Engine made its debut with Resident Evil 7 in 2017 and has since powered nearly 30 Capcom titles.
Our opinion
Capcom's framing is careful, and it has to be. The phrase “AI-generation game engine” is a gift to anyone determined to read it as “the publisher is about to ship AI slop”, so the insistence on tooling, testing and code — never art — is doing real work. The genuinely interesting piece is RE: Flows, which turns an idea for a game mechanic into something close to working code; that is the same ground vibe-coding tools have been colonising, and studios will judge it on whether designers keep authorship of their systems or end up handing prompts to a machine. Capcom has earned the benefit of the doubt after a decade of consistent releases, but its own logic — make the code easier for AI to read — is a quiet admission of how much modern game-making has become engineering overhead. Trim that overhead without flattening the studio's voice and every major publisher will be copying REX within two years.