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+--- Thread: [Dev News] Unreal Engine 5.9 Preview (/thread-114618.html)
[Dev News] Unreal Engine 5.9 Preview - xSicKxBot - 11-10-2026
To say that Epic Games have embraced AI lately would be a bit of an understatement, they have certainly pushed their chips all in. Nowhere perhaps is it more obvious than with the most recent Unreal Engine 5.9 preview release. Unreal Engine 5.9 is a version of Unreal Engine predominantly written BY A.I and arguably most of the highlight features are FOR A.I as well.
It is important to point out that the 5.9 preview release is very much a preview and an extremely early one at that. This release is mostly in support of the upcoming Epic AI Megajam and is less polished than previous preview releases. Additionally it is a release very specifically about Epic Games testing and refining AI agent driven development of Unreal Engine itself.
Highlights of the Unreal Engine 5.9 release include:
- Web Assembly has returned as an export target. Abandoned in Unreal Engine 4.x, Epic Games have ported WASM to UE 5.9 using the old code base and A.I agents as an experimental feature.
- Unreal Canvas a shared workspace for people and AI agents for creating and refining content. Includes hooks to several Gen-AI services for images, videos and 3D models.
- Updates to Unreal MCP which launches automatically with the editor, delivers more reliable connections, and expands its toolsets to support rendering, source control, profiling, debugging, gameplay testing, geometry, audio, UI, and level creation.
- Expanded Python scripting with APIs covering audio, MetaSounds, modeling, physics, Niagara, materials, PCG, networking, and UI.
There are several other features slated for Unreal Engine 5.9 in the Unreal Development Roadmap but it is unclear how many are ready to go in this early preview release.
Key Links
Unreal Engine 5.9 MegaJam Preview
Unreal Engine 5.9 Release Notes
SimplyStream(Web Export Solution Shown in the Video)
You can learn more about the Unreal Engine 5.9 release in the
below.