Such a special labyrinth: one with different floors. Moreover, on each floor there are all kinds of colored barriers that you can only cross when you have the color of that barrier. You'll first have to roll over a blob of paint of that color. This blob is rarely lying on the floor you're at that moment. So you'll have to change floor continuously to gather all the colors you need to reach the exit. Stars are worth additional points, but they're not required. Keys are, though: without keys you can't open the doors you have to go through reach the exit. A fun brain game that also puts your speed to the test!
Use the arrow keys to move around. Press A and Z to switch layers.