I have only bought PC games so far this year.
Xcom: Enemy Within-$10
Mortal Kombat Komplete-$7.50
Rust -$20
A few humble bundles~$10
I also preordered Dark Souls: Black Armour Edition for PC for $45.
Pretty slow year so far.
I do plan on picking up Titanfall and maybe Bravely Default in the near future though.
From what has been announced so far I might end up actually being in the positive for gaming purchases this year since I will probably sell my ps3 after I finish my backlog now that I have a Roku. Just need Activison to announce a PC version of Destiny before I can do so...