During PS1 era:
Metal Gear Solid
Final Fantasy VI
Final Fantasy VIII
Parasite Eve
Brave Fencer Musashi
Vagrant Story
Silent Hill
During PS2 era:
Metal Gear Solid 3: Snake Eater
God of War II
Devil May Cry 3: Dante's Awakening
Final Fantasy XII (xD)
Silent Hill 3
During PS3 era (I only have 4 games, I've just started playing Final Fantasy XIII and I have to start playing Nier after that one so...):
Metal Gear Solid 4: Guns of The Patriots
God of War III
(Can't add Final Fantasy XIII and Nier because I still have to finish those two).