It's neither very long (I guess shorter than Fate of Atlantis, if you want to beat it all three ways) nor very hard (more like a combination of interactive story and classic adventure than pure puzzle-based adventure).
Top psychological horror joy for two or three evenings (if you don't rush).

Ys Origin. After finishing it using the keyboard, I even bought a gamepad so I could play it properly.

I'm leaning towards SOTS:The Pit, followed by MK9.

Bought Injustice twice.

I think I was playing King's Bounty: The legend pre2013 otherwise that would be 1# But it may have been January so I'm going to mention it.

This year I discovered GOG and rekindled my interest in PC gaming; in that time FEAR was probably my favorite but Batman: Arkham Asylum was fun too and Rogue Legacy continues to taunt me into a continued love/hate relationship.

This is the year Oblivion wins my game of the year. I finally finished the main quest. After years of experimenting, in January I put together a list of mods that I have kept all year. It's wonderful.

Valdis Story Abyssal City. I regret rushing through it and not saving it until Christmas as I had planned but oh well, that's life.

The Pit Gold edition. It's going to take until Summer to get about 95% out of it. Man, just died & got some new recipes.
Start again. Play for a few hours. Die. Repeat :)
Also Fallout Tactics Redux modded is a heavy time consumer this year.
Some point'n'clickkers: I have no mouth... and to balance the horror; Simon The Sorceror 2, with its easygoing smart-ass wizard :)

I really enjoyed The Walking Dead and The Banner Saga.

Yeeeah! It completely topped all of my expectations.

Legend of Zelda Link Between Worlds

I was enjoying it a couple of days ago, then I updated to windows 8.1 and for some reason that borked the game for me. I did play enough to highly recommend it to any fence walkers.


Sigh...Now I want to play it again.

Pity. Try checking desktop composition and visual themes on the exe file, maybe compatibility mode for XP or Windows 7 too.

The GOTY for me was Super Mario 3D World. The Last of Us comes in second.

My favorite that I played this year... It is a tie.

System Shock 2 was everything that I had hoped it would be, and more. I remember playing the demo a decade ago, and it has been on my wishlist since. Finally being able to play it was amazing, and I was not let down in any way. It is great all around. There is no such thing as "overhype" with SS2. Easily one of the best games I have ever played.

The other game would be The Witcher 2. Nothing I could say would do it proper justice. I'll just say one thing - it was so amazing that I almost don't want to play it again, out of fear that it might not be as good the second time.