Honestly, GOTY will probably go to fucking COD: Blops 2 or some shit like that, just because it's a AAA game.
But if I had a choice...
GOTY: Spec Ops: The Line. THAT, people, is how to make a shooter. I think it taught the whole FPS genre a few lessons. Some took those lessons better than others (Looking towards Halo 4, actually a pretty good game this time around, ESPECIALLY with the characterization of Lackley, Cortana, and the Chief, though the captain of the Infinity, whose name escapes me at this time, could have been done better), and some fell asleep in class and only wrote down the name of the topic in their notes and at test time, filled in random boxes and flunked the class, dropped out, and became Wal-Mart greeters (COD: Blops 2).
Best shooter: Spec Ops: The Line or Halo 4. Both were well executed, and whilst I would definately give GOTY to Spec Ops: The Line, I still think Halo is the better shooter. Mostly because of the Mantis. You have to respect a giant 'Mech.
Best RPG: I think that would go to Dishonored, X-Com: Enemy Unknown, or the Walking Dead, should one just be looking at the "Popular" titles, but I think this years best RPG goes to Scribblenauts Unlimited.
Best MMO: Guild Wars 2. That game just blows me away. Even on the lowest settings, the graphics are excellent beyond compare, almost on the level of EVE: Online's graphics. The story and game mechanics are also very well executed.
Best Indie: FTL: Faster Than Light. This game is a nice break from the usual of "oh, you died? Feel free to pick up where you left off and repeat this a thousand times until you get it right!" With permanent death mechanics, and a different galaxy each time, every playthrough in FTL is as challenging as the last. Unless you have the Tier 2 Stealth ship. The Halberd Beam is just massively OP.
Best Expansion for an MMO: If I didn't fly a Heavy Missile boat in EVE, I'd say Retribution would be the winner of this catagory. But CCP decided to give Tier 1 Heavy Missiles a 10% damage cut. 22% against smaller targets. F*** you, CCP. This better get fixed in the winter Rebalancing. The only other expansion this year was the WoW expansion I believe, but WoW is a horrible game anyway, so... Retribution it is?
Runners-up: There are a few games that are pretty good but I don't think would make the cut. These are as follows:
Hitman: Absolution
Assassins Creed III
Borderlands 2
Far Cry 3
Mass Effect 3
Gag prize: This is the category for games that REALLY missed the mark on how to make a good game. They are as follows:
COD: BO2
Medal of Honor: Warfighter
Inversion
The Amazing Spider Man
Best Mod for a Game Ever: Wouldn't actually be a catagory, but DayZ is just AMAZING. So there.