Well, it's only almost the end of May, so I'd say that it's too soon to really choose. But if I had to, and this is going with the definition of my Most Played Game (Thus defining my year in gaming), it'd have to be Destiny. Is it the best game of this year, especially since it came out last year? In a word, no. But it's still fun. The only other contender would be Dragon Age: Inquisition, which also came out last year, but I would say is a better game overall, but I haven't played as much this year.
If I'm honest, I haven't actually played any of this year's new games, because none have interested me that came out on the 360, and the one that does, Bloodborne, is a PS4 exclusive. And sadly, I'm too cheap to get a PS4 anytime soon, so I can only drool at Let's Play's of that for the time being. I would vote for Bloodborne, but I haven't played it. So, my vote is on Destiny. Played it the most, so it defines this year for me.