Can anyone answer me these questions? -DayZ is played in a official server? (i don't know how is the arma 2 online, so if this question makes no sense just ignore it) -If i buy Arma 2 and the DLC necessary to play DayZ, can i install it in two different PCs? -If i installed it in two PCs with the same steam account, would i be able to play DayZ at the same time? -If i install Arma 2.....etc. and once a installed it with a steam account, can i log in with a different account and play online with the one that has the game bought? Don't think im trying to hack or things like that the game, im just wanting to know that if i buy arma 2 and the DLC once, would i be able to play DayZ with my brother together? I hope there is a way to play DayZ with my brother without buying the game twice.... Thank you!