Agent builds a fishkeeping game in Unreal Engine with Thrixel assets as Build World adds UE support

RanaHanocka · x · 2026-09-21

Fable and Thrixel demoed a fully agent-driven pipeline: the agent picked a Japandi style, generated assets with Thrixel, populated an Unreal Engine level, and wrote the gameplay logic to produce a peaceful fishkeeping demo.

The underlying Build World tool now supports Unreal Engine—users just describe what they want to build. It's a notable step for coding agents moving beyond code into full 3D game development.

Related event: Thrixel lets coding agents build 3D worlds while tools handle assets(3 posts)→

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