Paper Mario: The Thousand-Year Door cheats and cheat codes for Gamecube

Pit Of 100 Trials: Awards: 
Levels 1 to 10: Sleepy Stomp Badge
Levels 11 to 20: Fire Drive Badge
Levels 21 to 30: Zap Tap Badge
Levels 31 to 40: Pity Flower Badge
Levels 41 to 50: Strange Sack
Levels 51 to 60: Double Dip Badge
Levels 61 to 70: Double Dip P Badge
Levels 71 to 80: Bump Attack Badge
Levels 81 to 90: Lucky Day Badge
Levels 91 to 100: Return Postage Badge

Get more and better curses:
Press A, A. A, Y, Y, Y to 

Get 200 Coins from a photographer:
Sleep over 50 times at the inns

Never ending game:
Beat Shadow Queen, the credits, and Gommbella tells you about your 
partner, you will go back to Rougeport.

Luigi clothes
Find the Luigi Emblem. Go to area where you found the 6th crystal star. 
Perform a spring jump up to a pole on the left side, then perform another 
spring jump to reach a ledge. You will find here the Luigi Emblem.

Wario clothes
Buy and wear the Wario Emblem from the merchant at the central area of 
Rougeport.

Waluigi clothes
Equip both the Luigi Emblem and the Wario Emblem at the same time. 

Change Yoshi's color
Begin a new game and enter the name of a color as a name.