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

Rayman 2-D Madness mini-game:
Collect jewels during the game to get 1000 game points.

Racket Jump mini-game:
Collect jewels during the game to get 3000 game points.

Crush mini-game:
Collect jewels during the game to get 4000 game points.

Razzof Circus mini-game:
Collect jewels during the game to get 6000 game points.

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

Hint: 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.