Metal Gear Solid. I will play that several times and I still don't get bored of it. Shadow of the Colossus. Graphics were astounding for a 6th gen game. The bosses and environment looked gorgeous. Killzone series. Personally prefer this over Halo. Gladiator Begins. I don't know why, but I couldn't get into the PS2 game, Colosseum: Road to Freedom, but I play the shit out of the PSP title, Gladiator Begins. I was always a fan of these things. Fat Princess. That game is really fun. You should check it out. Too bad there's no release for the PS4.