Here's an updated list of cheats for Tony Hawk's Proving Ground. This is the most comprehensive list available online so far. These cheats are case sensitive. Try to follow the cheats like they are printed here.

• Cheat Code: AintFallin – Effect: Unlocks perfect rail / no bails
• Cheat Code: BeefedUp - Effect: Unlocks full statistics
• Cheat Code: Booyah - Effect: Unlocks super check
• Cheat Code: CRAZYBONEMAN – Effect: Unlocks skater Boneman
• Cheat Code: Dapper - Effect: Unlocks skater Spence
• Cheat Code: Flyaway - Effect: Unlocks skater Eric
• Cheat Code: FOREVERNAILED – Effect: Unlocks 100% branch completion
• Cheat Code: GiveMeStuff - Effect: Unlocks CAS items
• Cheat Code: IMGONNABUILD - Effect: Unlocks all rig pieces
• Cheat Code: INTERGALACTIC - Effect: Unlocks skater MCA
• Cheat Code: LAIDBACKLOUNGE - Effect: Unlocks all lounge themes
• Cheat Code: LetsGoSkate - Effect: Unlocks all decks
• Cheat Code: LooksSmelly - Effect: Unlocks skater Rube
• Cheat Code: LOTSOFTRICKS - Effect: Unlocks all available specials
• Cheat Code: MagicMan - Effect: Unlocks skating with no board
• Cheat Code: MoreMilk - Effect: Unlocks skater Bosco
• Cheat Code: Movers - Effect: Unlocks skater Shayne
• Cheat Code: Myopic - Effect: Unlocks unlimited focus
• Cheat Code: NeedsHelp - Effect: Unlocks fifty skill points
• Cheat Code: NotACamera - Effect: Unlocks skater Cam
• Cheat Code: NotADude - Effect: Unlocks skater Mel
• Cheat Code: OverTheTop - Effect: Unlocks fun items
• Cheat Code: Piledriver - Effect: Unlocks skater El Patinador
• Cheat Code: PutEmOnTop - Effect: Unlocks all video editor overlays
• Cheat Code: Rabbies - Effect: Unlocks skater Mad Dog
• Cheat Code: Shaker - Effect: Unlocks skater TV Producer
• Cheat Code: Sketchy - Effect: Unlocks skater Eddie X
• Cheat Code: STILLAINTFALLIN - Effect: Unlocks perfect manual
• Cheat Code: SUPERSLASHIN - Effect: Unlocks unlimited slash grind
• Cheat Code: SweetStuff - Effect: Unlocks all lounge bling items
• Cheat Code: TheCoop - Effect: Unlocks skater Cooper
• Cheat Code: TheIndoorPark - Effect: Unlocks Air and Space Museum
• Cheat Code: THELOCALPARK - Effect: Unlocks Lansdowne
• Cheat Code: TheMissing - Effect: Unlocks the invisible man
• Cheat Code: ThePrezPark - Effect: Unlocks FDR Skatepark
• Cheat Code: TinyTater - Effect: Unlocks the small skater
• Cheat Code: Trippy - Effect: Unlocks all video editor effects
• Cheat Code: WatchThis - Effect: Unlocks all in-game movies