Isn't the DayZ mod and Standalone the same game, essentially? I can save 5 dollars, and get all 3 games for 25 bucks. If I just purchase DayZ standalone, it says it costs 29.99. The combined price for Arma2, OA & Dayz Mod is 24.99. If I were to purchase Arma 2 Combined Operations from Steam, it says I can download DayZ mod for free. I enjoy Arma but after watching all the youtube videos of people playing DayZ, this looks amazing and would be a lot of fun to play. This is my 1st post here. I recently downloaded the ARMA 2 OA demo because of all the stuff I have read and heard about DayZ.