CheatCodeCentral

[Mark67]

Cheat Codes are here I have a whole book full of them.
For:
PS2
PS3
Xbox And Xbox 360
Nintendo Wii
PSP
Game Boy Advance
GameCube
And Nintendo DS

[Mokarachi]

Thankfully, we also have a full site of them. And if there is something you know that doesn't appear on the site, feel free to add it.
As CheatCC and CheatMasters are both gaming sites, therefore competitive sites, this is a bit of advertising, which isn't allowed.