As someone else mentioned, college took up a lot of my time in the beginning of the year. Hopefully with some more free time in between work I'll be able to finish more games!
January:
Black Ops III - One of the better Call of Duty games in recent memory. Solid campaign and multiplayer.
February:
F.E.A.R - Never got around to playing this one when it came out. Great shooter.
Knights of the Old Republic II - Upon replay, I have decided that I prefer the second KOTOR to the original. It's a masterpiece, with an excellent, dark, compelling story.
March:
Gears of War: Ultimate Edition - It was really fun to go back through this game, great remaster!
April:
Just played a lot of Rocket League for the most part.
May:
Started Dark Souls: Prepare to Die Edition. Trying to finish but haven't gotten there yet.
All Non-DLC Rocket League steam achievements on 5/26
June:
Currently playing The Witcher 2: Assassins of Kings for a second time.