I remember three games dominating the discourse of 2013, The Last of Us, Bioshock Infinite and GTA V, I unfortunately haven't played The Last of Us yet, but here is my take on the other two:
GTA V has a terrible story and boring characters, Michael Bay-like missions without any freedom for the player and an open world without any personality, attention to detail or depth in its interaction. Overrated and mediocre. GTA IV is a much better game in my opinion.
Bioshock Infinite is even worse, I legitimately think that is a 3/10 game, a lot of very interesting ideas that are only explored on the surface, they basicly replaced the exploration and immersive sim elements of the first two games with repetive shooting galleries with the most bullet-spongy enemies you can imagine. The multiverse nonsense story is very clumsy handled and feels completely out of place in the Bioshock universe. There so many strange choices in the game design, like why did they design an upgrade system for the weapons, when you can only carry two at a time and you never know in advance which weapons the game will provide you with ammo for? Oops I invested everything in the machinegun, but the game decides I am not supposed to use it for the next hour. Really? The skyline makes the game feel more arcade-like and again less slow and tense (which made the first two Bioshock games unique), combat arenas seldomly seem to be designed around you using the skyline anyway, except for the final boss. The game also gives you the illusion of choice several times and downright treats the player as an idiot on multiple occations: It doesn't trust you to actually aim and throw a ball at a key moment in the story, and who can forget this puzzle:
I wonder what the solution might be.
Anyway, this turned into a rant. There are a lot of great games of 2013:
Papers Please is a brilliant way of merging addictive gameplay with political commentary. It is very well written and a lot of fun to play.
The Stanley Parable is thè meta videogame, super creative and entertaining, I almost decided to vote for this one.
Super Mario 3D World is one of the greatest Mario platformers in my opinion. Top tier level design. Almost voted for this one too.
Pikmin 3 is another one that made the Wii U a great system. Looks gorgeous too.
Rayman Legends was 2D platformer perfection, though I still slightly prefer Origins. Who can forget the great music levels!
Tomb Raider was a brilliant reboot. Maybe too focused on action over puzzles and exploration, but when the action gameplay is that good, I don't really care.
But in the end I voted for Assassin's Creed IV: Black Flag, this game has a brilliant story with great characters and setting, sandbox game design that actually gives you options to complete missions multiple ways and a lot of solid side content.