While playing the game, press Start to pause. You can use the following codes (with the L and R buttons) to jump ahead one level at a time. You can use these codes consecutively to go from Level 1 to Level 6.

Level 1 to Level 2
R, L, R, R, L, L, R, L, R, R, L, L

Level 2 to Level 3
R, L, R, R, L, L, R, R, R, L, R, R

Level 3 to Level 4
L, R, L, L, R, R, L, L, L, L, R, R, R, L

Level 4 to Level 5
R, R, R, L, L, L, R, R, L, L, R, L, R, L

Level 5 to Level 6
R, L, R, L, L, L, R, R, L, L, R, L, R, L, L