Rope, Duck, Meat, Egg cracker Level 1, Room 4
Nail, Bucket, Ball, Lamp, Mag, Glass, Candle, Rocket Level 2, Room 4
Bucket, Funnel, Ball, Weight Pan Level 3, Room 4
During play hold Triangle and press X, R1, R1, R1, R1. Press Triangle to return to game. Inventory screen will appear during code entry.
Fly over walls
Fly into the upper-left corner of a location.Press and hold Up-Left, L1, R1 and Start to pause. Release Up-Left andL1, then press and hold Right-Down and Triangle while still holding R1 and Start. The game unpauses. Press R1 and you can fly over walls.Press L1 to return to the normal can't-jump-the-walls mode.
After you do the fly-over-walls code, in the center twirly hall, go up the left staircase then fly over the doorway that you just came in, and keep going down and you will find a secret room!