Extract text from OBN files
To convert your OBN file to another format, you need OpenIV or other Game software.
To convert other file formats to the "Physics Data" file type, you need software like OpenIV or a similar tool.
An .OBN file is a compiled collision boundary file used by the Rockstar Advanced Game Engine (RAGE), primarily found in titles like Grand Theft Auto IV, Max Payne 3, and Grand Theft Auto V. It defines the physical interactions of objects - invisible geometry that stops bullets, cars, and players from clipping through assets.
The main issue with .OBN files is their proprietary, binary nature. Unlike standard OBJ or FBX files, you cannot open an .OBN in Blender or Maya directly. They are highly optimized, compressed, and specific to the game version they were cooked for, meaning a file from GTA IV may cause crash errors if loaded into GTA V tools without conversion. They do not contain texture data, only physics proxies (boxes, spheres, capsules, and convex hulls).
For practical use, modders and developers must convert .OBN files into an intermediate editable format. The gold standard workflow involves converting to openFormats (text-based XML representations) or exporting to OBJ for visualization. For editing physics, the file is typically converted to an intermediate format compatible with 3ds Max plugins like GIMS Evo.
Convert.Guru analyzes your OBN file, detects the exact format, and lets you read the text inside.
Users also converted Z3D, DFF and RBXM files.
If you want to convert OBN file to , you can use OpenIV or similar software from the "Game Collision Boundaries" category. In the File menu, look for Save As… or Export….
To convert files to OBN, try OpenIV or another comparable tool in the "Game Collision Boundaries" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our OBN converter.