In terms of quality the PS1( FF VII, VIII, IX, Vagrant story, LOD, FF Tactics and a few others) but in terms of quantity the PS2( FF X, X-2, XII, Persona 3, 4, Dark Cloud, Dark Chronicle, Star Ocean: Til the End of Time, Dragon Quest VIII, Shin Megami Tensei: Digital Devil Saga 2 and theres quite a few others). For the sheer fact that FF VII and VIII are my favourite games respectively and for sentimental value, for me the PS1 just beats the PS2.