Harry Potter: Quidditch World Cup cheats and cheat codes for Gamecube

Play in World Cup:
Beat all 3 other teams with one team.

Play in Queerditch Marsh:
Win 1st place in the Quidditch World Cup with any country. 
You can play multi-player or against the CPU.

Get more Quidditch Cards:
Play the Challenges and beat the Team Record.
Win matches, each with a different team, in the Hogwarts or World Cup.

Bulgarian team: Collect 65 Quidditch Cards. 
Nimbus 2000 broomstick: Collect 20 Quidditch Cards. 
Nimbus 2001 broomstick: Collect any 35 Quidditch Cards. 
D'orazio Dive skill: Collect 25 Quidditch Cards. 
Firebolt skill: Collect 50 Quidditch Cards.
Edgar Cloggs: Collect all Quidditch Cards. 

Recommended team:
The best team to pick for Hogwarts is the Ravenclaw team. The Ravenclaw team 
has a Team Special Move that allows to get 30 points.

Faster Snitch Catch
When the snitch is in play wait for a few second until you have full control 
over your seeker. Then press the boost button. If done right it will take you 
right to the snitch. How fast you catch it is affected by how much boost you 
have when you start. Submitted by Hondo

Get Bludgers quickly:
Hold L + R while pressing A to make combo passes.