I don’t play as much anymore, but I have roughly 1200 hours in Diablo 3.
In Steam, my top most hours played are: Sims 3: 945 Mad Max: 609 Vampire: The Masquerade - Bloodlines: 230
Xbox doesn’t tell me the time played for all of my games, but I know for sure I have a stupid amount of hours invested in Dead Space 2 and LA Noire. It does say I have about 650 hours in Resident Evil Revelations 2, but that’s because I really enjoy Raid Mode.
Still going through Arthur’s chapter in We Happy Few for achievements.