I have action replay max for the ps2 and it does have some cheats for kingdom hearts like all items,gumiblocks, wepons, levels, etc. The are even two keyblades you can use that you cant get in the game. I cant rmember the names but they are very strong. I never actually use them anymore though. The only problem with using the codes is that if you use certain codes on your already saved game, all your abilities that you have gained so far will be gone(not sure if you get them back), and donald and goofy will be taken out of the party so its just sora.(not sure if there gone for good though.) So Its best to use all of the codes that you want to use when you start a new game.