Cheat mode:
Press Square at the rewards screen to access the cheat options that can be unlocked during game play.

Big Melon
Win the European Champions' Cup. This cheat gives all players big heads.

Crazy Ball
Win the EFA Trophy. Press Square to make the ball move in a crazy path when it is passed.

Stay N Play
Win the European Championships. The ball will always rebound from the touchline.

They All Fall Down
Win the Copa America. Your players will all fall down if the ball remains in possession for too long.

Eye Catcher
Win the Gold Cup. The ball will be giant sized.

Bonus tournaments:
Win the following World Cup qualifications to unlock the corresponding bonus tournaments:

AFC: Asians Nations Cup
CONCEBOL: Gold Cup
CONCACAF: Copa America
UEFA: European Championships (Euro 2004)

Complete all rewards except the last locked one to unlock the FIFA Confederations Cup.

Panini cards:
Win the following events to unlock the corresponding Panini cards at the rewards screen:

AFC World Cup qualification: Myung Bo Hong
UEFA World Cup qualification: Francesco Totti
CONMEBOL World Cup qualification: Roberto Carlos
CONCACAF World Cup qualification: Ruud Van Nistelrooy
EFA: Nuno Gomez
European Championship Cup: Iker Casillas
European Championship: Thierry Henry
Copa America: Henrik Larsson
Gold Cup: Thomasz Rodzinski
FIFA Confederations: Steve Marlet