Labs_underpass_p.upk [FAST]

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?

This guide will walk you through setting up, testing, and managing custom maps using the Labs_Underpass_P.upk file method. What is Labs_Underpass_P.upk? Labs_Underpass_P.upk

This method is primarily for local play and Freeplay. Labs_Underpass_P

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