Arma2: CO just hit the top on Steam sales
Yeah, and right now, in a dark, dank office complex, a fat greedy business man is studying this really close. With the success of Minecraft fresh in his mind and seeing a mod lift the actual game to the top, ideas/demands will be lifted up on the agenda for the next meeting.
Hopefully we'll see more Persistent World type of games soon, perhaps even some with proper budgets from the larger publishers.