[STEAM] What do you play the most?

When I enjoy a game I play the hell out of it and sometimes frequently return to it later on. Once Starbound comes out, I expect to log just as many hours on it as Terraria, if not many more. I don't know why that game pulls me and my friends in so much. Skyrim will probably soon jump over 200 hours when Dragonborn comes out on PC, and Borderlands 2, considering I haven't even scratched Hammerlock's DLC yet.

Note: I only put the ones that have over 20+ hours, cause if it has less, it's not enough of a substantial investment of time to me.

 Game Times

Binding of Isaac: 161 hours
Borderlands: 71 hours
Borderlands 2: 194 hours
Dead Island: 26 hours
Deus Ex Human Revolution + DLC: 61 hours
Dishonored: 49 hours
Maplestory: 40 hours logged through steam, many more before then
PAYDAY: The Heist: 20 hours
Skyrim: 170 hours
Killing Floor: 56 hours
Terraria: 225 hours
Torchlight 2: 44 hours