Capcom has outlined a long-term plan to evolve its proprietary RE Engine into what programmer Satoshi Ishida described as an “AI-generation game engine.” The strategy is being developed under a multi-stage initiative called REX, which will modernize the existing engine rather than replace it outright. Capcom detailed the project during its Open Conference RE: 2026 technology event on October 2, with the company positioning AI integration as one part of a broader effort to make game development faster, more scalable and easier to manage.
Ishida identified three major pressures behind the project: modern games have become so large that even relatively simple development processes can take significant amounts of time, more than 2,000 developers now use RE Engine across Capcom, and AI is becoming increasingly important to development workflows. Instead of starting again with an entirely new engine, Capcom plans to introduce new “RE:” technologies incrementally across areas including performance, tools, development efficiency and quality assurance. The company’s 2025 integrated report says RE Engine now supports all of its titles, from photorealistic projects such as Resident Evil Requiem to more stylized games including Monster Hunter Stories 3.
One major component is RE:Dox, a system designed to standardize how different data formats are handled and improve processing speed. RE:UI is intended to make Capcom’s increasingly complex internal development tools lighter, faster and easier to test, while RE:Log overhauls logging and communication by centralizing records and reducing the amount of data that needs to be processed. RE:Flows is focused on making gameplay logic more accessible to developers without requiring them to manually write complex code, while RE:Runtime restructures how the engine manages large numbers of objects and memory.
The larger goal is to create an engine architecture that is easier for both humans and AI systems to understand. Ishida said standardizing the underlying programming structures could eventually allow AI to understand code, generate programs automatically and conduct test play sessions to identify bugs. Capcom has also discussed making some of its technology publicly available so it can be used in AI training, with parts of the REX ecosystem being developed as open-source software.
That does not necessarily mean Capcom intends to fill future games with AI-generated art or other finished assets. Shinichi Inoue, Capcom’s vice president of game development platform and AI solutions, has previously said the company sees AI as a way to support creators rather than replace creative work, describing its goal as improving collaboration and helping development teams communicate intent more effectively. That position aligns with a broader debate across the industry over where generative AI should be used, including comments from developers who see AI as a productivity tool rather than a substitute for creative storytelling.
The distinction is significant because Capcom’s approach appears focused primarily on infrastructure and production workflows. Automated testing, code generation, data handling and development-tool improvements could affect how quickly games are built without directly determining their art direction, writing or final visual assets. Other studios have faced criticism when generative AI has appeared more visibly in creative output, including Level-5’s recent apology over generative AI use in a game showcase, making the boundaries of Capcom’s implementation particularly relevant.
RE Engine first entered commercial use with Resident Evil 7 in 2017 after development began several years earlier. Since then, Capcom has used it across more than two dozen releases, including major entries in Resident Evil, Monster Hunter, Street Fighter and Devil May Cry. The company has continued expanding the engine instead of moving to a third-party alternative, with its own technical teams responsible for areas such as rendering, tools, AI, runtime systems and platform support.
REX represents the next stage of that strategy rather than a clean break from the existing technology. Capcom has not announced a date when RE Engine will formally become what it calls an “AI-generation” engine, and many of the systems described are being introduced progressively. The direction, however, is now clear: Capcom wants its core development platform to become increasingly compatible with AI-assisted programming, testing and production while continuing to serve as the common technology foundation for its future games.
