The file "" typically refers to a Rocket League Workshop map or a specific compressed asset package used in game modding . Because it is a .7z file, you must first extract its contents using a program like 7-Zip or WinRAR .

If this file contains a Rocket League custom map (usually a .udk file inside), use this method for or Steam versions:

Restart RetroArch and go to to verify the new system is listed.

333 Bayview Avenue, Amityville, NY 11701 • (631) 842-9400
Fax: (631) 789-9292  email: 
Copyright 2025, Napco Security Technologies, Inc. All rights reserved