Press Select button on the title screen and then enter one of the following passwords.

Note: each password allows you to chose your starting side (that's how levels are called in this game) from five corresponding levels. Just press Left or Right after you input a password.

Password - Effect

4NADA - Side 001-005
MATUI - Side 006-010
0MORI - Side 011-015
OK8MA - Side 016-020
YO4DA - Side 021-025
MA2N0 - Side 026-030
MORII - Side 031-035
KA582 - Side 036-040
H8SHI - Side 041-045
MEGU3 - Side 046-050
EAMRA - Side 051-055
KITA9 - Side 056-060
SAPP6 - Side 061-065
CHUO9 - Side 066-070
KITA1 - Side 071-075
ZAXES - Side 076-080
VOLGD - Side 081-085
08ATA - Side 086-090
OIKA8 - Side 091-095
MRSRM - Side 096-100
7GB17 - Side 101-105
NZ100 - Side 106-110
HINAM - Side 111-115
K0D00 - Side 116-120
ATTAK - Side 121-125
NO13O - Side 126-130
PAPAT - Side 131-135
MAMAA - Side 136-140
110NN - Side 141-145
LUCKY - Side 146-150
B5BAY - Side 151-155
EBIRA - Side 156-160
YA3ZW - Side 161-165
YA379 - Side 166-170
WOMAN - Side 171-175
00ZAR - Side 176-180
B0KUD - Side 181-185
X3Y48 - Side 186-190
LAST1 - Side 191-195
O4MA5 - Side 196-200