I think Isolation gets my vote for 2014 as well.
It was finally the game Alien fans wanted all these years.
Though it was far from perfect. The story doesn't really make sense and there are a lot of plot holes or at least question marks.
Game play tends to become repetitive and the alien unfortunately never sneaks.

Imagine it would not rumble all over the place all the time - letting you know where exactly it is - now that would be sheer terror.
Still a fantastic game, of course.

I have hopes for a sequel!