Labs_underpass_p.upk ❲Must Try❳

Find your Rocket League map folder, usually located here: Documents\My Games\RocketLeague\TAGame\CookedPCConsole\mods

Disclaimer: Modding Rocket League is done at your own risk. Always backup your files. Map files & packages - RL Modding Wiki

This method is primarily for local play and Freeplay. Labs_Underpass_P.upk

You don’t need to swap files between playing online and playing offline.

Create a backup of the original Labs_Underpass_P.upk to avoid losing the default map. Find your Rocket League map folder, usually located

No, you can ignore the universal Mods.upk file for this method.

Ultimate Guide to Custom Maps in Rocket League: Mastering Labs_Underpass_P.upk Find your Rocket League map folder

For easier management, consider using the Rocket League Map Manager on GitHub to switch between custom maps automatically.