Get the game here (RVGL Launcher):
https://re-volt.io/

RVGL Launcher includes optional easily togglable "semi-official" cars and track packs in the "Packs" tab, which are the same downloadable directly in https://re-volt.io/downloads/packs)

Get Custom User-Made Cars and Tracks here:
https://www.revoltworld.net/
http://revoltxtg.co.uk/
http://revoltzone.net/

To install Custom content, drop the "ZIP/7z" FILE in the "LOCAL" tab in the RVGL Launcher, where you can manage custom content or drop the files in the game directory.

Special thanks to everyone who supported this game all these years :D