What is the license on the QRP textures and can I use the textures for commercial as well as non-commercial usage? The textures are copyright by their respective authors and, collectively, this project. These textures are free to use in any project, be it commercial or non-commercial, on the condition that the work or the derivative product mentions the URL (http://qrp.quakeone.com) and name of this project (Quake Revitalization Project) in the credits. In case your project does not have a suitable credits section, you must include with your product a file titled "read-me" or "licensing". No exceptions. For any further questions, contact us.