Mine changes a lot as I hop from game to game. A bit of ago it was Mother 3 Then it was Castlevania 3 Right now though, it's OFF.
Oh Gawd... It's probably either Monster Hunter, Persona, Final Fantasy, Left 4 Dead, Mega Man, Sonic Advanced 2, Medieval, Crash Bandicoot 2, Halo, Fear III, Minecraft, Far Cry III, Klonoa (On the PS1, not the remakes), Ridge Racer, Fable 1 (The later ones were crap), Battlefield II- *Explodes*
Troll Bioshock Infinite, tryin to steal my top spot... Kingdom Hearts 2 is still at the top, but Bioshock is not too far off.
Halo 2 was the greatest game that ever existed. Nowadays, it's straight up NES for me, so.... Final Fantasy 1 Mega Man 2-6 Super Mario 1-3 The Guardian Legend Ghosts & Goblins Jackal Solar Jetman Metroid Ninja Gaiden Blaster Master Zelda 1 and 2 Wizards & Warriors
I always have a hard time answering this question. I can never think of a favorite because I've played so many good games, but if I absolutely had to choose, it would be Star Wars: Knights of The Old Republic 2.