I only heard about ARMA 2 through Youtube, I watched a couple of videos, I then download ARMA 2 Free and I thought it really was a great game, I may of had the game but I decided to buy the game officially and I bought all the Expansions with it, this game is worth buying if you like realistic war games, there may not be music in game or special announcements but real life does not have that either, it is a military simulation more than a game, people don't think it is popular because it does not have the similar gameplay to any other shooter games, to me, this is a unique game and I can't wait for the new Expansion as well as newer mods.