Cheat Codes
Select 'Cheat Codes' at the main menu, then enter the codes below for the corresponding effect:

• letisslide: Perfect rail balance.
• keepitsteady: Perfect manuals.
• rearrider: Perfect skitches.
• getitup: Low gravity.

T.H.U.D
To get T.H.U.D without completing hard mode, enter "NOO!!!" in the cheats menu.
Submitted by Jackiechan118. 50% success rate. 

Go to: Tony Hawk's Underground Info Page | nGaming Home Page.