PS1 | Submitted by GamesRadarLevel Skip:
During the game at first level hold L1, L2, R1, R2, and press Up, Left, Right, Circle, Triangle, and Square. You will now be able to skip to any level.
Also reported this way
on the title screen you click options .they have the key sign click it and type in house .then use l1 l2 r1 r2 to select level hold r1 r2 to warp