PRM (*.prm) is a Re-Volt file extension used for instances and car parts (still models), and is primarily used in the Instances Edit Mode. A PRM can be created with ASE2PRM, RV-Glue's tazripper, or by 3D graphics editors such as 3ds Max and ZModeler. The models format can not only be viewed in Re-Volt, but also on FreeVolts, R3-DCP, Car::Load, .prm viewer and other software.
The PRM format is used in the PC version of Re-Volt, and also the DC version. The prm version for PSX 's extension is "psm".