I'd have to go with Strategy here. Specifically RTS. The hours I spent on AoE2, AoM and Warcraft III...
Unfortunately, I've pretty much gone completely off PC gaming, because of the ridiculous need to upgrade every 6 months, and that's where all of the great RTS games are (barring Halo Wars on the 360 which I don't own).
Maybe I should pick up Civ Rev, because I quite like Turn Based Strategy as well.







