I'm too cheap to play any new games, I spent too much money on my computer. Plus, I really enjoy getting great bargains on sales and slightly older games. ( Contest wins are nice, too!! *hint *hint)
The Witcher 3: Wild Hunt for sure. It might be one of the best games I ever played; time will tell. Only complaints are the sometimes clunky controls, and the excessive loot-and-sell mechanic.
Witcher 3, Kerbal Space Program, Mortal Combat X, Grand Theft Auto V, Project Cars if they can get it to run well on AMD hardware, and Cities: Skylines
Not sure why some people would choose Mortal Kombat X, which is a bit overhyped, not to mention that the game has a faulty PC port. Not saying that it's a bad game since I've been a MK fan for years, but the new game just does not quite live up to the franchise's roots.