It will shock no one that I've been playing absolute schlock for most of the year.
Sans Zelda (~300 hours) and Mario (50 hours), I've spent most of my time on Warframe (~80 hours - but I'm done with it, needed something to prevent myself from caving and getting Destiny and this did just that) and FFXIV (500+ hours at last count - this game is actually amazing if you're into MMOs, it's super casual and lets you tackle whatever, whenever - it is the perfect game for me at this point in my life). I just can't be arsed getting into a hardcore game anymore, so this casual shit is the best. I play a lot of ports/emulators on my phone as well during my commute, but otherwise it has been a pretty unremarkable year for me. I still play Halo with my brother every now and then, we will hang out and beat a couple of titles in the MCC - the only thing it's good for anymore, unfortunately.
Standouts not mentioned above include MYST (I've lost track of how many times I've completed this one) and Stardew Valley as well.