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HOME/USEFUL GUIDES/GUIDE TO 3D FILE FORMATS/UPROJECT FILE FORMAT EXPLAINED
UPROJECT Icon

UPROJECT File Format Explained

A UPROJECT file is a human-readable Unreal Engine project descriptor that contains metadata and configuration used by Unreal Engine to open and manage a project. It acts as the project descriptor that allows the Unreal Editor to identify the engine association, plugins, and associated modules.

IconExtensionOriginal SoftwareYearPrimary IndustryGeometryUV MapsTexturesPBRAnimationRiggingOpen Use
UPROJECT Icon.UPROJECTUnreal Engine2014Game Development
Realtime Apps		Mesh✔✔✔✔✔–

UPROJECT File Format Details

What It Stores

It commonly stores the engine association, a list of enabled or disabled plugins, and project modules, including module metadata such as loading phase.

Primary Use Cases

  • Initializing the Unreal Editor for a specific game project.
  • Managing plugin dependencies across a development team.
  • Identifying the specific engine build required to launch the project.
  • Declaring project modules used by Unreal Engine build and startup workflows.

Strengths

  • Text-based structure makes it relatively easy to inspect and edit manually.
  • Lightweight and stores only high-level configuration data.
  • Stores engine association information used when opening or switching projects between engine installations.

Limitations

  • Does not contain actual assets like meshes or textures.
  • Corruption of this file can prevent the project from launching.

Common Software Support

It is used by Unreal Engine project workflows, including Unreal Engine 4 and 5, Unreal Build Tool, and IDE integrations such as Visual Studio's Unreal Engine project support.

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