Room Zoom Cheats (GameCube)

To unlock other cars, you need to find three keys per level. When you begin a level, it is
a good idea to find all the keys, then complete the laps. It does not matter what you
place when you are looking for keys; take your time, and complete the level. If you do
not complete the level and found all the keys, do not worry -- you still get the prize.
However to go onto the next level, you must place third or higher. Additionally, in the
third Grand Prix, in the second to last level "Tomb And Gloom" is where you can unlock
the find fastest car once you have found all the keys. The third and last key is hidden
well here. It is in a curtain draped off the ground in a descending matter (just hop of
the ledge onto the curtain). A good rule of thumb when looking for keys is to change the
cars view to a more elevated position, then try to spot the sparkling keys in the
distance.