Despite some shortcomings I would put Dishonored in the number 1 spot.
Although the top 5 games imo are all great games with some fundamental flaws
So rather than focusing on what these games did well as we all know how fantastic the highs were in these games, and they were ( will just highlight the bits that were lacking or could have been so much better.
TBH I have been very impressed with a lot of games this year, granted we still got some shitfest garbage and rehashes for the twitchtards, but the games I mention here (and quite a few I haven't) are all fantastic games well worthy of plonking down your e-cash for
So top 5 in no real order
Dishonored 9.0 (OP skills, cheap stealth mechanics, emphasis on killing rather than non lethal takedowns even though you are in essence punished for killing people, spiritual powers/story badly presented, Theif Lite)
Far Cry 3 9.0 (clichéd as hell and the fact this was deliberate and supposedly satire didn't help as it was badly presented, weak shooting/gun mechanics, 2nd half was poo compared to first half, QTE boss fights, game economy was pointless, not enough and/or badly paced upgrade system, binary ending)
Mass Effect 3 8.5 (streamlined, shittest ending ever that doesn't ruin the game, but does invalidate the vast majority of player choices up to that point. The strength of the narrative is the only reason I stayed with the franchise which made the ending so much worse)
XCOM 8.5 (poor pacing, far far far too easy, lacks tactical and strategic depth, story triggers events rather than Geoscape situation, repeated maps, removed options (crouch, combat inventory, etc), move/shoot mechanic needlessly restrictive, free move aliens)
Borderlands 2 9.0 (Borderlands 1.5, Golden Keys system is daft, skill trees still a bit shit and lack variety, classes mean essentially nothing, co-op loot system is poorly implemented, driving is still weak and lacks variety)
Hon Mentions: All great games I also really enjoyed.
The Walking Dead 8.0 (great story, there is no "game" here)
Journey 8.5 (too short, obtuse, and lacking depth)
Resonance 8.5 (Is basically a decent 1995 era point and click adventure botht he good and the bad)
FTL 8.0 (repetitive, luck reliant, lacking depth_
Thomas Was Alone 8.5 (charm can be overplayed, some puzzles needlessly finicky, gimmick wears out its charm before game ends)
Mark of the Ninja 8.5 (too easy, gimmick reliant, pacing off for 2nd half)
Darksiders 2 8.0 (repetitive, pacing is well off in a number of places, upgrades hollow/unremarkable, combat lacks variety/too button mashy)
Kingdom of Amalur : Reckoning 8.0 (narrative ranges from good to poor, very derivative, combat can be bland, too streamlined)
Sleeping Dogs 8.5 (wonky shooting mechanics, car/driving physics is pants, world lacks variety, clichéd story)