I used to really enjoy titan quest!
I hated diablo 3 though... I've heard it's a lot better since they closed down the auction house, but for diablo games I've always been a fan of ironman diablo 1! Diablo 1 just had such a lonely atmosphere, and my heart identifies with haunting loneliness a lot more than it does with perilous dread!
As for me, I've been absolutely hammering starcraft 2 recently! Back-to-back games for hours on end!
In between those, though, I've been putting a few hours into FTL (now that there's a hard more in the advanced edition), Don't starve, ADOM, and hearthstone.
It feels very good to have kicked my League of Legends addiction once and for all! x