Complete the indicated task to reach the indicated hidden level or mini-game.

Flying Fire Rings
In the "Wormholin' - Observatory" level, drop from a cliff to see fire erupting from a pipe. Drop onto this ledge and reverse to set the rear side of your bike on fire. This will make several fire rings appear in the sky, and you will be able to fly through them to reach a wormhole on a stationary aircraft in the air.

Marble Mini-Game
In the "Return Of The Sphere - Around The Oasis" level, reverse to fall into the water near some pipes. You will be able to play a Marble mini-game that was also available in Trials: Evolution.

Maze
Near the start of the "Secret Agent - Cliffhanger" level, reverse and fall into the open hatch of the stationary UFO to be transported to the secret Maze level.

Penguin Washl
At the start of the "Penguin Wash - Stormtrooper" level, reverse through the sand ramp, and enter the purple glow near a truck to enter the secret level. Destroy all towers and make the birds fall to complete the challenge.

Tennis Mini-Game
In the "Game, Set, Match - Park And Ride" level, carefully drop down onto the tennis court, and wait in the middle of the court to start playing tennis against a penguin, using a signboard.