Labs_underpass_p.upk Apr 2026
Disclaimer: Modding Rocket League is done at your own risk. Always backup your files. Map files & packages - RL Modding Wiki
Find your Rocket League map folder, usually located here: Documents\My Games\RocketLeague\TAGame\CookedPCConsole\mods
For easier management, consider using the Rocket League Map Manager on GitHub to switch between custom maps automatically. Labs_Underpass_P.upk
Create a backup of the original Labs_Underpass_P.upk to avoid losing the default map.
Move your renamed custom map into the mods folder. Disclaimer: Modding Rocket League is done at your own risk
This method is primarily for local play and Freeplay.
Open the game, select "Freeplay" (or local match) and choose "Underpass". Your custom map will now load. Pro Tips for Map Modding Create a backup of the original Labs_Underpass_P
Have you ever wanted to play custom Rocket League workshop maps but felt lost with the file management? The most effective way to play custom maps on PC is by utilizing the map as a base.