I play Minecraft. There is this one server called EcoCityCraft I play on that is fun! You should check it out!
But in all seriousness, games I always come back to are Skyrim; any game in the fallout series (except Brotherhood of steel. That sucked); Halo 2,3,reach; or portal 2
I've got a few hundred hours in Planetside 2 which is an MMOFPS. Pretty fun when there are 300+ person fights in one area. Singleplayer wise I'd recommend Final Fantasy XV, Fallout 3 or New Vegas (Not that piece of shit 4), and Borderlands 2.
if you want a new game to play, find a psychotic girlfriend who will play mind games on you and manipulate you! It's super fun and exciting, something new every day!
I'd also recommend the Bioshock trilogy, if you are one of the 6 people on earth who haven't played them yet.