Thrillville

Get 50,000:
Press Square, O, Triangle, Square, O, Triangle, X while in any park
for extra 50,000.

Unlock all rides:
Press Square, O, Triangle, Square, O, Triangle, Triangle while in any
park to access all rides.

Unlock all parks:
Press Square, O, Triangle, Square, O, Triangle, Square while in any
park to unlock all park.


Mission completion:
Press Square, O, Triangle, Square, O, Triangle, O while in any park.

When you are at the mission selection screen, press Square to finish
the highlighted mission and access to the next mission.


Note:
Your rank will increase by pressing the Square button on a highlighted
mission. To reverse your progression on a mission, press O at the
mission selection screen to remove the highlighted mission medal.
After completed all missions, press Square to select any mission.


Unlock last two Mini-games:
Complete the game 100%.

Faster romance
Play flirt mini-game instead of the regular conversation.
Note: First you have to you reach the love intrest level

New hat style:
Press Square, then select the "Inventory" option. Choose the Hat Stall,
choose the "Customize Style" option, then select a new theme.
You can change it by pressing Left or Right.

Getting money easily:
Get good rides in Career mode and leave the game running for several hours.