.REND File Extension
Scrap Mechanic Render Definition File
| Developer | Axolot Games |
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What is a REND file?
A REND file is a render definition file used by Scrap Mechanic, a sandbox building and survival game developed by Axolot Games. It contains structured text in a JSON-style syntax that tells the game which 3D model, textures, materials, and other visual resources to use when displaying an object, character part, tool, block, or environmental asset. Rather than storing the 3D model itself, a REND file contains references to model files, such as .FBX, .OBJ, .DAE, or Scrap Mechanic-specific mesh files, along with related rendering settings, so the referenced resources must remain in their expected locations for the asset to appear correctly in the game.
More Information
Scrap Mechanic reads REND files when loading visual assets into the game. For example, an object definition may point to a REND file, which then identifies the model and surface materials that the game should display. The game includes thousands of REND files for its built-in content, and mod creators use the same format when adding custom parts, objects, tools, or other visible content.
How to open a REND file
You can open REND files with a text or source code editor, such as Microsoft Visual Studio Code, Notepad++, or Microsoft Notepad, to view or modify its resource paths and rendering settings. To see the completed asset, keep the REND file with its associated models and textures, then load it through Scrap Mechanic or the Scrap Mechanic Mod Tool. Editing a REND file incorrectly may prevent the related object from appearing, so mod creators commonly compare it with working files from the game or an existing mod.