Tony Hawk's Pro Skater 4 Cheats - GBA

Turbo mode
Get all the gaps on each level except The Zone to unlock the Turbo option.

Hidden skater
Complete the Pro Challenges to unlock Mindy, Frycook, Momo and Roger.

The Zone level
Get all 90 packages to unlock The Zone.

Pro Challenge
Get all goals in a level. Note: This must be done before any of the buyable cheats can be used for that skater.

Pro Skater animations
Win the Pro Objective for that skater.

Moon physics
Spend $40 at the skate shop.

Jet pack mode
Spend $40 at the skate shop. Press [B] to fly up, [A] to move right, [L] to move left, and [R] to hover.

Matrix mode
Spend $40 at the skate shop.

Alternate outfit
Spend $40 at the skate shop.

Stud mode
Spend $240 at the skate shop.

Always special
Spend $240 at the skate shop.

Perfect rail balance
Spend $240 at the skate shop.

Perfect manual balance
Spend $240 at the skate shop.

Skitchin'
To skitch a car, go behind a car and hold [A] + [B].

Walking
Hold [Down] until you stop moving. Then, hold [A] to pick up your board and start walking.

Tony Hawk's Pro Skater 4 board
Go to the skate shop and select "Change Deck". The board under "Custom" is the Tony Hawk's Pro Skater 4 board for Neversoft skaters.

Glitch: Alcatraz: Froggy dance
Do a "Mr. Business" going left. When you are close to the end of the roof, ollie, then hold [Down] + [Grind]. When you ollie, go towards the end of the roof. When you start grinding the very end point of the roof, hold "Ollie" + [Down] + [Grind]. If done correctly, the skater you chose should be hopping back and forth like a frog as long as those buttons are held. To exit, release "Ollie".