Splashdown cheats and cheat codes for Playstation 2

Cheat mode
Go to the main menu, select "Options", after hold R2 and quickly enter
Up, Up, Down, Down, Left, Right, Left, Right, Square, O, Square, O
If the code has been accepted, the "Cheat Name" screen should be appear.
Type any of the following case-sensitive codes.
You can go back to options menu by pressing X.

Unlock every courses + Steve and the Bermuda Triangle: Enter "Passport"
Unlock every characters: Enter "AllChar"
Unlock wetsuits: Enter "LaPinata"
CPU cannot knock you off: Enter "TopBird"
Full performance meter: Enter "PMeterGo"
Hard tracks with normal difficulty level: Enter "Hobble"
Expert AI (hard mode): Enter "AllOutAI"
Unlock ending FMVs: Enter "Festival"
Playing Time Trials against a UFO: Enter "IBelieve"
Playing Time Trials against a mini F-18 jet: Enter "F18"
Playing Time Trials against ghost: Enter "SEADOO"

Unlock Steve and Bermuda Triangle track:
Finish the game on the hard mode once

Secret track
Accumulate 100 balloons in countdown mode.