Due to huge library of excellent games PSOne was, and still is my favorite system. I still do play the oldies, on my PsP, due to convenience, even though I still have a perfectly fine PSOne.

Game such as Final Fantasy IX, my favorite RPG, and game in general, Final Fantasy VIII, Legend of Dragoon, Vagrant Story, which are excellent RPG-s as well.

Silent Hill 2, survivor horror at it's best, Alone in the Dark, Resident Evil series, games which to this very day are superior to it's successors.

Tekken 2 & 3, Marvel vs. Capcom: Clash of Super Heroes , Sould Blade, Street Fighter Collection, fans of fighting games hit gold with PS.

Metal Gear Solid, excellent stealth game with mind blowing story, Quake II, Medal of Honor Underground, some of the games that made playing shooters on consoles possible.

Comand & Conquor Red Alert, Warzone 2100, the very best RTS had to offer on consoles.

Gran Turismo 2, to this very day it can be used as a fine example of what racing games should be like, as far as simulation goes, it still pawns some of today's games.

Tony Hawk series, Spiderman & Spiderman Enter Electro, Syphon Filter, Crash Bandicot: Warped, Sheep, Dog,'n' Wolf, Ace Combat 3: Electrosphere, Driver 2, Need for Speed Hot Pursuit, International SuperStar Soccer II, Worms Armageddon, Wipeout 3, Monster Rancher 2, LMA Manager 2002...I could go on forever.

What in my opinion made PS the best console of it's time, is both diversity and the fact that it backed every genre with several excellent games.