Lol at you guys saying sequels. The games before it have to exist for the sequel to exist.

Anyway, I don't care about contradictions: Persona 3.

Agree with Darth you see how long WOW has lasted and a good propper Star Wars MMO could fill you for ages just hope The Old Republic is that

Link's Awakening, without a shadow of a doubt. That one's easily my favourite game, ever. It's just so perfect in what it is, in every way. I cannot imagine it not ever existing.

Star Wars MMO, in mass effect styled universe. With more options and more variety. 

Heroes of Might and Magic III. It's the only game I never get tired of playing.

I mean c'mon! The game NEVER ends.

Counter-strike or Halo Reach. Tough call.

minecraft 

the game has so much to do, from exploration to building to mining 

Pokemon for me, the most replayable game ever made

Call of Duty: Black Ops

hahahaha no seriously. Starcraft II. I played it for a very small time, but if there was only one. It would be it.