Hello, me and my brother have bought all the games since '08. We have two computers, so he always used Steam to play the game and I used to play it without steam (with DVD inside). But this year, the only possible installation form is through Steam, so probably only one of us can play it. I think it is really bad. Or can we play the game at the same time through steam? We have ordered box version of the game (we haven't got it yet), but I heard it is impossible to play it without Steam. So? How is it?