The following cheat codes are for Tony Hawk's Underground on Game Boy Advance.
| CHEAT CODE |
|---|
| Enter the code at the main menu. |
| Skip Tutorial | Hold bttnR And Press dpadLeft, dpadDown, bttnStart (x2), dpadRight, dpadUp (x2), bttnL, dpadDown |
The following cheat codes are for Tony Hawk's Underground on GameCube.
| CHEAT CODES |
|---|
| Enter the following codes at the options menu in the cheat codes option. |
| Moon Gravity | getitup |
| Perfect Manual | keepitsteady |
| Perfect Rails | letitslide |
| Perfect Skitches | rearrider |
| CREATE A SKATER CODES |
|---|
| Create a skater and enter the following codes to play as the specific character. |
| Adam Lippmann | THEDOC |
| Alan Flores | Alan Flores |
| Alex Garcia | Alex Garcia |
| Andy Marchel | Andy Marchel |
| Bailey | Bailey |
| Big Tex | Big Tex |
| Brad Bulkley | fatass |
| C Surla | Akira2s |
| Captain Cody | arrr |
| Chauwa Steel | Chauwa Steel |
| Chris Peacock | ChrisP |
| Chris Rausch | Chris Rausch |
| Chum | Johnny Ow |
| Dan Nelson | Dan Nelson |
| Dana MacKenzie | Daddy Mac |
| Darren Thorne | DDT |
| Dave Cowling | TOPBLOKE |
| Dave Stohl | Dave Stohl |
| Eric Grosser | crom |
| Gary Jesdanun | Yawgurt |
| Glycerin | Glycerin |
| Greenie | Greenie |
| grjost | grjost |
| Henry Ji | Henry Ji |
| Jake Geiger | GEIGER |
| Jason Uyeda | Jason Uyeda |
| Jeff Morgan | NSJEFF |
| Jeremy Anderson | Jeremy Anderson |
| Joel Jewett | Joel Jewett |
| Kendall | FROGHAM |
| Kevin Mulhall | Guilt Ladle |
| Marcos XK8R | Marcos XK8R |
| Michelle Deyo | woodchuck |
| Mike Ward | Mike Ward |
| Mikey Ortai | moreuberthaned |
| Nolan Nelson | Noly |
| Paul Robinson | POOPER |
| Pete Day | buffoon |
| Ralph D'Amato | deadendroad |
| Rock | M'YAK |
| Rulon Raymond | 1337 |
| sik® | sik® |
| Skillzombie | Skillzombie |
| Stacey D | Stacey D |
| tao zheng | tao zheng |
| Ted Barber | Hammer |
| The Kraken | The Kraken |
| The Swink | The Swink |
| Todd Sue | TSUEnami! |
| Todd Wahoske | Todd Wahoske |
| Wardy | leedsleedsleeds |
| Y2KJ | Y2KJ |
| Zac Drake | Zig |
The following cheat codes are for Tony Hawk's Underground on PC.
| CHEAT CODES |
|---|
| At the Main Menu, enter Options and select Cheat Codes. Then enter any of the following codes. Then you can pause while playing and select Options, then Cheats and enable them. |
| Moon Gravity | getitup |
| Perfect Grind | letitslide |
| Perfect Manual | keepitsteady |
| Perfect Skitch | rearrider |
| CREATE A SKATER CODES |
|---|
| Create a skater and enter the following codes to play as the specific character. |
| Adam Lippmann | THEDOC |
| Alan Flores | Alan Flores |
| Alex Garcia | Alex Garcia |
| Andy Marchel | Andy Marchel |
| Bailey | Bailey |
| Big Tex | Big Tex |
| Brad Bulkley | fatass |
| C Surla | Akira2s |
| Captain Cody | arrr |
| Chauwa Steel | Chauwa Steel |
| Chris Peacock | ChrisP |
| Chris Rausch | Chris Rausch |
| Chum | Johnny Ow |
| Dan Nelson | Dan Nelson |
| Dana MacKenzie | Daddy Mac |
| Darren Thorne | DDT |
| Dave Cowling | TOPBLOKE |
| Dave Stohl | Dave Stohl |
| Eric Grosser | crom |
| Gary Jesdanun | Yawgurt |
| Glycerin | Glycerin |
| Greenie | Greenie |
| grjost | grjost |
| Henry Ji | Henry Ji |
| Jake Geiger | GEIGER |
| Jason Uyeda | Jason Uyeda |
| Jeff Morgan | NSJEFF |
| Jeremy Anderson | Jeremy Anderson |
| Joel Jewett | Joel Jewett |
| Kendall | FROGHAM |
| Kevin Mulhall | Guilt Ladle |
| Marcos XK8R | Marcos XK8R |
| Michelle Deyo | woodchuck |
| Mike Ward | Mike Ward |
| Mikey Ortai | moreuberthaned |
| Nolan Nelson | Noly |
| Paul Robinson | POOPER |
| Pete Day | buffoon |
| Ralph D'Amato | deadendroad |
| Rock | M'YAK |
| Rulon Raymond | 1337 |
| sik® | sik® |
| Skillzombie | Skillzombie |
| Stacey D | Stacey D |
| tao zheng | tao zheng |
| Ted Barber | Hammer |
| The Kraken | The Kraken |
| The Swink | The Swink |
| Todd Sue | TSUEnami! |
| Todd Wahoske | Todd Wahoske |
| Wardy | leedsleedsleeds |
| Y2KJ | Y2KJ |
| Zac Drake | Zig |
The following cheat codes are for Tony Hawk's Underground on PlayStation 2.
| CHEAT CODES |
|---|
| Go to options, then select cheat codes to enter the codes. |
| All Characters (Clear Story Mode First) | NOOO!! |
| Moon Gravity | getitup |
| Perfect Manuals | keepitsteady |
| Perfect Rail Balance | letitslide |
| Perfect Skitch | rearrider |
| Unlocks All Thug Movies | digivid |
| CREATE A SKATER CODES |
|---|
| Create a skater and enter the following codes to play as the specific character. |
| Adam Lippmann | THEDOC |
| Alan Flores | Alan Flores |
| Alex Garcia | Alex Garcia |
| Andy Marchel | Andy Marchel |
| Bailey | Bailey |
| Big Tex | Big Tex |
| Brad Bulkley | fatass |
| C Surla | Akira2s |
| Captain Cody | arrr |
| Chauwa Steel | Chauwa Steel |
| Chris Peacock | ChrisP |
| Chris Rausch | Chris Rausch |
| Chum | Johnny Ow |
| Dan Nelson | Dan Nelson |
| Dana MacKenzie | Daddy Mac |
| Darren Thorne | DDT |
| Dave Cowling | TOPBLOKE |
| Dave Stohl | Dave Stohl |
| Eric Grosser | crom |
| Gary Jesdanun | Yawgurt |
| Glycerin | Glycerin |
| Greenie | Greenie |
| grjost | grjost |
| Henry Ji | Henry Ji |
| Jake Geiger | GEIGER |
| Jason Uyeda | Jason Uyeda |
| Jeff Morgan | NSJEFF |
| Jeremy Anderson | Jeremy Anderson |
| Joel Jewett | Joel Jewett |
| Kendall | FROGHAM |
| Kevin Mulhall | Guilt Ladle |
| Marcos XK8R | Marcos XK8R |
| Michelle Deyo | woodchuck |
| Mike Ward | Mike Ward |
| Mikey Ortai | moreuberthaned |
| Nolan Nelson | Noly |
| Paul Robinson | POOPER |
| Pete Day | buffoon |
| Ralph D'Amato | deadendroad |
| Rock | M'YAK |
| Rulon Raymond | 1337 |
| sik® | sik® |
| Skillzombie | Skillzombie |
| Stacey D | Stacey D |
| tao zheng | tao zheng |
| Ted Barber | Hammer |
| The Kraken | The Kraken |
| The Swink | The Swink |
| Todd Sue | TSUEnami! |
| Todd Wahoske | Todd Wahoske |
| Wardy | leedsleedsleeds |
| Y2KJ | Y2KJ |
| Zac Drake | Zig |
The following cheat codes are for Tony Hawk's Underground on Xbox.
| CHEAT CODES |
|---|
| Go to options, then select cheat codes to enter the codes. |
| Increased Speed | moveinfast |
| Moon Gravity | getitup |
| Perfect Manuals | keepitsteady |
| Perfect Rail Balance | letitslide |
| Perfect Skitch | rearrider |
| Unlocks All Thug Movies | digivid |
| CREATE A SKATER CODES |
|---|
| Create a skater and enter the following codes to play as the specific character. |
| Adam Lippmann | THEDOC |
| Alan Flores | Alan Flores |
| Alex Garcia | Alex Garcia |
| Andy Marchel | Andy Marchel |
| Bailey | Bailey |
| Big Tex | Big Tex |
| Brad Bulkley | fatass |
| C Surla | Akira2s |
| Captain Cody | arrr |
| Chauwa Steel | Chauwa Steel |
| Chris Peacock | ChrisP |
| Chris Rausch | Chris Rausch |
| Chum | Johnny Ow |
| Dan Nelson | Dan Nelson |
| Dana MacKenzie | Daddy Mac |
| Darren Thorne | DDT |
| Dave Cowling | TOPBLOKE |
| Dave Stohl | Dave Stohl |
| Eric Grosser | crom |
| Gary Jesdanun | Yawgurt |
| Glycerin | Glycerin |
| Greenie | Greenie |
| grjost | grjost |
| Henry Ji | Henry Ji |
| Jake Geiger | GEIGER |
| Jason Uyeda | Jason Uyeda |
| Jeff Morgan | NSJEFF |
| Jeremy Anderson | Jeremy Anderson |
| Joel Jewett | Joel Jewett |
| Kendall | FROGHAM |
| Kevin Mulhall | Guilt Ladle |
| Marcos XK8R | Marcos XK8R |
| Michelle Deyo | woodchuck |
| Mike Ward | Mike Ward |
| Mikey Ortai | moreuberthaned |
| Nolan Nelson | Noly |
| Paul Robinson | POOPER |
| Pete Day | buffoon |
| Ralph D'Amato | deadendroad |
| Rock | M'YAK |
| Rulon Raymond | 1337 |
| sik® | sik® |
| Skillzombie | Skillzombie |
| Stacey D | Stacey D |
| tao zheng | tao zheng |
| Ted Barber | Hammer |
| The Kraken | The Kraken |
| The Swink | The Swink |
| Todd Sue | TSUEnami! |
| Todd Wahoske | Todd Wahoske |
| Wardy | leedsleedsleeds |
| Y2KJ | Y2KJ |
| Zac Drake | Zig |