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A free, open-source Unreal Engine 5 editor toolchain is available for developers working on data-heavy projects.

The core idea is simple: change game content as plain JSON, and the editor-side pipeline carries the update end to end — it detects the changed data, regenerates typed DataAssets, and propagates the new definition into actors already placed in the editor scene, without a C++ recompile or manual asset rebuilding.

This makes content text-based, version-controlled, diffable, reviewable, and safer for scripts, CI, and AI agents to propose.

The pipeline is split into four public plugins:

  • ProjectDefinitionGenerator (Plugins/Editor/ProjectDefinitionGenerator) — watches JSON-backed definitions, validates changes, and regenerates typed DataAssets from source data.
  • ProjectPlacementEditor (Plugins/Editor/ProjectPlacementEditor) — creates configured actors from generated definitions, then reapplies or replaces placed actors when definitions change.
  • ProjectAssetSync (Plugins/Editor/ProjectAssetSync) — keeps JSON references correct when assets are renamed or moved, and fixes redirectors.
  • ProjectEditorCore (Plugins/Editor/ProjectEditorCore) — a shared contract layer: the stages communicate through its events instead of hard-wiring the pipeline stage to stage, so they stay loosely coupled and each one is easy to read, fork, or extend.

Useful for Unreal automation, data-driven gameplay, CI content generation, and agent-assisted content authoring.

Want to test the public build, review the architecture, or contribute to ALIS? Start here: https://github.com/fallintodusk/alis/discussions/1

Practical feedback is welcome: what should be clearer, more stable, more useful, or more convincing?

Source: https://github.com/fallintodusk/alis

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