Complete the indicated task to find the corresponding secret level.

Level	How to unlock
Flying Fire Rings	In "Wormholin' - Observatory", drop from a cliff. You will see fire appearing from a pipe. Drop on that ledge and reverse to set the rear of your bike on fire. This will create several fire rings in the air. Fly in between them to reach w Wormhole on a stationary aircraft in the air.
Marble Mini Game	In "Return of the Sphere - Around the Oasis", reverse to fall into the water near some pipes. The Marble mini game from Trials Evolution will begin.
Maze Level	Near the start of "Secret Agent - Cliffhanger", reverse and fall into the open hatch of the stationary flying saucer.
Penguin Wash	At the start of "Penguin Wash - Stormtrooper", reverse through the sand ramp and enter the purple glow near a truck. Your goal is to destroy all towers and make the birds fall.
Tennis Court	In "Game, Set, Match - Park and Ride", carefully drop down in the tennis court. Stand on the middle of the court to begin playing tennis using a signboard against a penguin opponent.