What is the RCF file format?
The .rcf file is a proprietary game resource container used in the *Prototype* action game series developed by Radical Entertainment. These binary archive files bundle game assets - textures, 3D models, audio, and scripts - into a single package that the game engine loads at runtime. Similar in concept to generic .pak archives used by other game engines, .rcf is specific to Radical Entertainment's proprietary engine.
The format was used in *Prototype* (2009) and *Prototype 2* (2012), both published by Activision. Radical Entertainment was shut down by Activision in 2012, and no official modding or extraction tools were ever released. Community members have developed partial extraction utilities, but the internal structure - including any per-entry compression or encryption - remains incompletely documented.
Individual .rcf files can be very large, potentially exceeding 1 GB, as they contain the bulk of a game's asset data. The format targets Windows PC, PlayStation 3, and Xbox 360. Note that .rcf is also used for unrelated configuration files in other software such as Colin McRae Rally 2, but those represent a completely different format with no connection to the Radical Entertainment game container.
Security & safety
RISK: LOWGame data file - no executable code outside the game engine context. Very low risk.
Format details
in a nutshell- Colin McRae Rally 2 Configuration File - Codemasters racing game uses .rcf for configuration data - different binary format, unrelated to Prototype.
Programs that open RCF files
Windows1 app
Prototype (game)
Paid RCF files are read automatically by the game engine at launch; no manual opening needed. Technical details
deep spec| File encoding | Binary (proprietary Radical Entertainment container) |
| Byte order | Little-endian (targeting x86 Windows and game console platforms) |
| Container type | Proprietary game resource archive bundling multiple asset types |
| Asset types stored | Textures, 3D models, audio files, scripts, level data |
| Games using this format | *Prototype* (2009, PC/PS3/Xbox 360) and *Prototype 2* (2012) by Radical Entertainment |
| Publisher | Activision |
| Target platforms | Windows PC, PlayStation 3, Xbox 360 |
| Typical file size | 10 MB - 2 GB |
| Official tools | None released; no SDK or mod tools were provided by Radical Entertainment |
| Community support | Partial extraction tools developed by fans; format not fully reverse-engineered |
| Developer status | Radical Entertainment closed by Activision in 2012; format abandoned and unsupported |
| MIME type | application/octet-stream (no dedicated MIME registered) |
| Magic bytes | None publicly confirmed; header structure undocumented |
| Released | 2009 (Prototype, June 2009) |
| Latest version | Prototype 2 variant (2012) |
RCF conversions
Community Q&A
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