By collecting the corresponding number of points, you can unlock a variety of mini-games, as indicated below.

Rayman 2-D Madness - 1,000
Rocket Jump - 3,000
Crush - 4,000
Razoff Circus - 6,000
Sentinel - 65,000
Missile Command - 100,000
Balloons - 155,000
Special Invaders - 235,000
Commando - 350,000