Rayman 3: Hoodlum Havoc [GC]

Play Mad Trax
To play the Mad Trax minigame, first unlock it by getting enough points. Then hook up with a player who has a Rayman 3 game pak in the GBA and you'll be able to play Mad Trax.

Extra energy:
Your maximum energy is increased for every six cages collected. Note: There are a total of 60 cages in the game.

Bonus games:
Link the Game Boy Advance to the Gamecube version of Rayman 3: Hoodlum Havoc to unlock additional multi-player games.

Rayman 2 reference:
In the Hoodlum's factory, get to the place where you have to jump across crates to get to the other side. Once there, keep going up. You will eventually reach a location with a switch to activate the lifts to get to this second "conveyor belt". On those lifts, get pretty well up to the top. There is a hole in the side of a huge "pipe". Jump and helicopter over there and go in. You will see some of the villains from Rayman 2, including Admiral Razorbeard and his other cronies.