Stunt Arena is a Re-Volt playmode where the player has to collect all the 20 stars. By collecting them, a new playmode, Clockwork Carnage, will be unlocked.
The Stunt Arena mode is a good zone to do stunts, from loops to jumps.
Custom Stunt Arena
Re-Volt 1.2 alpha can support additional Stunt Arena tracks, without changing its default files.
As of summer 2008, Phoenix R3 was able to add custom arenas as well.