On PS2 I only cared for Silent Hill 2&3, GTA III and Gran Turismo 3. GameCube (REmake, RE4, Eternal Darkness, Wind Waker) and Dreamcast (Code Veronica, ShenMue) were more important to me.
PS1 had Alundra, Symphony of the Night, Resident Evil 1-3, Final Fantasy VII-IX, Metal Gear Solid
PS3 had SSF4, RE5, REmaster, Tekken Tag 2, Demons & Dark Souls and Super Stardust HD
PS4: Bloodborne, GTA Online, Rocket League, The Witcher III
PS2 had a lot of good games but not enough legendary titles for me. It's the least important to me.