Aj_habfan on 30 June 2008
A lot of strong series on PS2 were first party...
Gran Turismo 3 + 4
God of War 1 + 2
Ratchet and Clank Series
Jak & Daxter Series
Socom Series
MLB: The Show series
Shadow of the Colossus
3rd party defenitly helped a lot, but it's not like Sony was completly unreliant on their own studios.