This thread starts with the PS3 guys here giving wonderful mentions to ps3 titles however they mistakenly believe that they're quoting the only best games when they really only mention the ps3 only titles.

My list would say the following titles are held in contention in randomized order:

Halo Reach (I'm going to upset a fair few of my halo brethren here, I like the campaign storyline. Don't get me wrong it got some points where it didn't quite get up to the intensity of previous games where it really should have. But it's got massive scope and the sheer size of the battlefields you participate in is mind blowing even compared to 3. AI as well, dear god the elites in solo legendary put up a fight)

Red Dead Redemption (What can I say? Game of the year was well deserved. I liked how GTAIV played, but I found it hard to care for the characters at all, but I found it impossible not to care for John Marston from the opening few minutes he was introduced to me. I cared about the outcome of his mission and the chances of him getting his family back and thus was hooked on the game. Not to mention, if I'm angry nothing is more relaxing then spending my days hunting in game)

Fallout New Vegas (not picked it up yet due to unfinished business in 3 but I know how damn good the game is)

Final Fantasy XIII (I'm going to say I have thoroughly enjoyed this and unlike some people I don't see it as the worst entry to the series so far either)

Mass Effect 2 (I loved every second of the game where I wasn't scanning planets, unfortunately that was a huge chunk of my game play time.)

Assassins Creed: Brotherhood (how can you not love the assassins creed series?)

Need For Speed: Hot Pursuit (imho better than GT5 which disappointed me severely)

Starcraft 2 (I haven't played multiplayer, haven't finished the single player even because I got too bogged down and aside from Blizzard not letting me play my game on my starcraft account offline I have been very happy with this game, I wasn't disappointed in this considering 10 years wait and hype should have killed the game much like GT5 suffered)

Call of Duty Black Ops (I was very disappointed with the game, lets face it Treyarch always have potential to do better than IW but they always manage to screw it up and BO was no exception)

Gran Turismo 5 (As previously stated and much like COD Black Ops, this game disappointed me, no amount of work put in to the game could have made it live up to the hype of 5 years delays but smurf it I expected better than GT4 level graphics for over 80% of the cars in game. Game play wise, GT5 did deliver as the best driving simulation however I feel as a racing game the fun I experienced with NFS or Forza wasn't there this time)

Dwarf Fortress 2010 (I suck at raw DF, lets face it I have a problem reading the ASCII interface. However, give me a tileset and load up the fort in stonesense occassionally and I've learnt to work wonders in this game I've certainly come a long way from my first tenative steps in the control, building and expansion of a fortress from the early days of EOFF DF I've still got marathons to go before I understand everything the game is exceptionally good and independent which means it's never really gonna get the credit it deserves but I will mention it)

Pokemon Heart Gold/Soul Silver (Oh yes, I went there and did it I named Pokemon as a contender for my game of the year! Reason being, aside from DQIX which is forever ruined for me because Jedward were who Nintendo got to advertise it on TV ick! and Golden Sun DS which has only just come out and I've not been able to pick up yet theres not been many notable DS releases this year. Pokemon has never failed to do what it says on the tin and Gold/Silver were my favourite pokemon games released of all time. Therefore their DS updates come in highly reccomended.)

Castlevania Lords of Shadow (Even OPM admitted it in the review of this game but the game is actually significantly better than God of War 3, GoW3 was a massive game and deserves it's high rating and yet here was new addition to a classic series far longer running what done the same but better. I doubt theres much more to say than this, if you like God of War on the ps2 but brought a 360, get this game you'll not be disappointed with it)

Bayonetta (Well it was never taking itself seriously but what it did do seriously was make the latest entries to the DMC series feel crap. The first DMC and even the second DMC were awesome, 4 lacked any of the awesomeness of the start, Bayonetta gave me same style gameplay but with the added values of tongue in cheek humour and awesomeness. I wish I had bothered to pick this game up sooner for my home rather than play it at work or at friends houses. Will be getting it soon no doubt)

Dead Rising 2 (hahaha ok, ok I know I haven't even fired the first one up at home guys, yes it's true but I have played the Dead Rising games. First game was amazingly epic even if it did suffer a relatively broken save feature, note I don't use broken lightly here, my mate who has loaned me his copy of DR1 indefinitely has done so because he actually couldn't stand the save feature, it made the game unplayable in his opinion. Dead Rising 2 however lacking the camera I can't say was as diverse as DR1 but still it's Zombies, you tape different items together and end up with chainsaws on a canoe paddle...it's the game version of Zombieland or Zombieland is what would exist if DR was made in to a film...sweet jesus smurf yes!)

Dance Central (By far the best of the Kinect launch titles, and still the best game out now on Kinect. Dance Central is perhaps the single most advanced dancing game in history and whats more it teaches people who can't dance to dance so long as they can move to a beat. If we were to mention the best motion control game of the year, I would hapily place my vote here, theres nothing on the wii (whose best game was Just Dance 2) or on PSMove that beats it hands down)

DJ Hero 2 (Perhaps one of the better music games of the year though the next game on my list kinda steals the show I feel this is an honourable mention here. DJ Hero wasn't as good as it could've been it relied too much on constantly scratching/mixing/crossfading to get points. DJ Hero 2 has improved massively on this and is now much more fun to play for it, sure you gotta do all the rest but the game has another way of ranking your performance which is how much the crowd in game enjoy it and if you're over the top on the crossfade sections or overcooking it slightly with the scratches and volume adjustments then the fans don't like it so much and you get less points. It's complicated to do right but it's such a vast improvement on the first DJ Hero that I feel it needs a mention here, especially since you can actually learn how to operate a real vinyl deck here without the hundreds being spent on wrecking LS or SS vinyl (12" single or 7" Single to clarify) which is not a bad thing)

Rock Band 3 (OK everyone bitches about the music games "Oh they're e go learn to play a proper instrument" ect ect ect however Rock Band finally addresses this issue with a massive smurf you to those people, Rock Band 3 with Pro instruments, expensive as hell but seriously, learn to play a song on a real 6 string and then once you can do it in game take the 6 string jack it in to the supplied amp and play for real without the game. Argue with me now that music games are not trying to teach or encourage people to play real instruments or take an interest in music really? DJ Hero 2 and Rock Band 3 prove otherwise imho)

I probably have more honourable mentions/contenders based on different categories but well I can't be bothered to list them right now if theres any major ones I think of they can have their own little post.