Labs_underpass_p.upk

You can directly create or import meshes and textures inside your level package.

Create a backup of the original Labs_Underpass_P.upk to avoid losing the default map. Labs_Underpass_P.upk

You don’t need to swap files between playing online and playing offline. You can directly create or import meshes and

Labs_Underpass_P.upk is the underlying file for the "Underpass" Rocket League map. By replacing this specific file with a custom map file and naming it properly, you trick the game into loading your custom map instead of the standard Underpass, allowing you to play workshop maps in Freeplay. Why Use the Underpass Method? Labs_Underpass_P.upk

Ultimate Guide to Custom Maps in Rocket League: Mastering Labs_Underpass_P.upk