I loved Shadowrun Returns: Dragonfall. I bought it in a sale because I recognized it as that Kickstarter game. "I wonder how that turned out." I purchased Shadowrun Returns and its DLC campaign. Dead Man's Switch (the first campaign) was decent. I can see why some would be disappointed a little by this, I thought. Then I fired up Dragonfall. It was clear it was head and shoulders above the original in the first hour.
Dragonfall was fantastic. It had a great story. Not a good-for-a-videogame story, but a good story on its own. Having a permanent squad really added to the story value. Each teammate had an interesting back story and personality. Delving into their lives between missions, Mass Effect style, had you invested in your team's success. The gameplay is solid too. It lacks the graphical bells and whistles but has a nice core design in the style of XCOM. The difficulty was comfortable on hard. The level design was much better too; I don't recall a stinker. More missions with exploration were in the expansion too, which was great. I enjoyed the game a lot.
It has shortcomings such as its poor interface, but overall it was a great ride. I was hooked for a week at least, with multiple long play sessions. Looking forward to playing the Director's Cut, which I'm sure will be my new GOTY, if it's eligible.
If Dragonfall doesn't count (big expansions usually are eligible, right? I'm fine.), then I guess... Titanfall, Murdered Soul Suspect or Diablo 3:UEE would be the top contenders.