What all PS2 cheat systems are available?

[pitchblack]

Are Gameshark and Codebreaker the only cheat systems for PS2?

[Ad Bot]

[lolzorz mcgee]

There's also AR max, but I think that's the only other one.

[TetraVox]

If you have to cheat you shouldn't play games.

[blaman]

I use cheats once I beat the game. Never before hand.

Ontopic: GamesRadar

[TetraVox]

Fair enough.