1. Guild Wars 2
Like I said before release, GW2 isn't a game for everyone. If you come to MMO's looking for a never-ending grind towards bigger numbers and bigger loot, you won't find it here. Instead, Guild Wars 2 focuses more on the RPG aspect of the MMORPG. If you take the time to explore the areas, talk to NPC's, you'll find a deep world with a lot of interesting lore. The cities feel like actual cities, with towering buildings and hundreds of NPC's and the surrounding areas filled with a near infinite amount dynamic events, many of which you'll likely miss on your first few times passing through those areas.
There's also more of a focus on skill, since earning better equipment and gear don't provide any kind of stat advantage once you reach the top tier. This has lead to many people believing that GW2 is a "casual" game, since it requires less of a time investment than typical MMO's, but this is largely because, unlike other MMO's, there's no subscription and thus less need for time sinks. This also means if you find yourself bored upon reaching the "end game" you don't need to worry about falling behind if you take a break from the game while waiting for new content to be added. If you're unhappy with games like WoW being a never ending quest to have the newest and best loot to show off just to stay competitive, with no real depth behind the numbers, GW2 might be the game you've been looking for.
There's a crazy amount of content in here, whether you're looking for a straight up PVE experience, are interested in taking out other players in PVP or if you're looking for a combination, WvW allows you to explore a pretty huge PVE style area, while attempting to capture keeps, forts, watch towers and supply routes for your sever. So far they've been fantastic and keeping the game fresh too, with massive updates being released on a monthly basis.
It may not be the revolution many were hoping for, but it breaks free from enough MMO tropes and conventions to stand out and packs in enough content and unique features for a very reasonable price to make it well worth jumping into.
2. XCOM: Enemy Unknown
I dislike games that try to be artsy for the sake of being artsy, but this is one that also managed to provide a very unique and thought-provoking gameplay experience.
4. Borderlands 2
Borderlands 2 does little that the original didn't, but provides more of exactly what you want.
5. Pokémon Black/White Version 2
If you're sick of Pokemon by now, this isn't for you, but it's the most robot game in the series to date. Rather than being the typical "enhanced" third version, Nintendo decided to go with full blown sequels to the 5th generation games. While they take place in the same region, you're now playing as a new trainer, several years after the original Black and White. Many of the story threads continue and you'll meet a lot of the same characters. It's a fun trip back into the Pokemon world and it feels quite nostalgic, despite the fact the originals only came out a few years ago.
The variety of available Pokemon has been greatly expanded upon, allowing you to catch many of the fan favourites such as Riolu and Psyduck early on and the new game features, such as the Movie Studio and Pokemon World Tournament provide a lot of depth. I debated how high this should appear on the list, but the game is literally packed with content.
6. LEGO Batman 2: DC Super Heroes
This another one where if you're sick of the formula, there isn't much to see here. But it's a great co-op experience with a wide range of DC characters to unlock, plus a decent amount of vehicles, which now serve more of a purpose thanks to the open world structure, giving you a huge Lego version of Gotham City to explore. The added voice acting was actually really well done too, with Batman's attitude towards Superman being especially funny.
7. Dragon's Dogma
Essentially a "western" take on Monster Hunter. I was really impressed by the combat, the amounts of customisation and the size of the world. The only thing it's really lacking is multiplayer. The ability to explore and take on the massive bosses with a friend would have made the game all the more enjoyable.
8. Torchlight II
This is a more "old school" approach to action RPG's and if you were disappointed with Diablo 3, this is probably what you're looking for. Big areas, lots of enemies, mountains of loot and near infinite modding possibilities. Plus there's no ridiculous DRM.
9. Diablo III
I think this game got a lot of unfair criticism back when it was released. I had a tonne of fun playing through the game, both by myself and with friends all the way up to Hell difficulty. Unfortunately, there were a lot of balancing issues and when it came to Inferno, there seemed to be a requirement for you to buy loot from the auction house (assuming you didn't get incredibly lucky with loot drops) and the prices on there were ridiculously inflated, in part because of the real money section of the Auction House. This brought us to a brick wall that could only be passed by grinding and that sucked all the fun straight out.
I'll gladly jump back into the game when the inevitable expansions are released though, especially as these balance issues seem to have been sorted out in recent patches.
10. Xenoblade Chronicles
I played through this game last year, but decided to not include it on my GoTY list then, because it hadn't yet been released in the US. It's a very deep game that manages to shake free of many of the problems a lot of gamers have with typical JRPG's. The story is intriguing, the battle system is fast and exciting and the main character, while young and inexperienced, doesn't come across as the typical whiney kid that a lot of other recent JRPG's have suffered from.
If you recently picked up a Wii U and are desperate for something to play on it until next year, get this.