Arma II ftw! That's awesome. I am having tremendous fun with DayZ. I've been waiting for a game like this forever. Only alpha, and this game has so much potential! No instanced bullshit, a persistent 24/7 sandbox. I love it! The PvP is cool but needs some tweaking imo. I paid 30 bucks through steam but I've already logged 30+ hours over the weekend. I haven't even touched D3 since installing this last Wednesday. This game owns me for now.
Cities: Skylines is exactly what I've been looking for!