What game have you played the most (How many Hours? Days?)
On my old steam account (before they started to keep track of time, and when I stopped gaming with that account [Around May 2011] I had 1428 hours played POST time update), I must have had 1000+ hours on CS 1.6 before that. I've also played a ton of Wolfenstein: ET, Quake III, Diablo II, and Warcraft III/Dota.