Hidden room (Basement)
While you have unlocked Sheridan Training Circuit, take your ride to the first Chicane on this circuit. Then you can now see the building at your leftside, go there, and you can see the entrance with wire-fence. Just go down through the way and explore it. In motoGP1 you can found a mini game (arcade machine) in this room. In motoGP2 this mini game called 'Credits Shooter'. To play it just touch it (motoGP1).
Contributed By: FelixEricz.
To unlock minigames watch the credits when it says silly minigames hit enter, now on the main screen there will be an option called minigames
Contributed By: miniongage.