For cheapskates like me, I can save you 10 bucks. You only have to get Operation Arrowhead (19.99). There is a game called ARMA II: Free. It is basically ARMA II, but does not enable good graphics, no campaign, and a few other things. Steam took it off (it was listed as ARMA II's demo for some reason) and you can no longer download it. There is a work around, you can directly download it from here: (Please note you can not open this by clicking on it, open a new tab and copy and paste it into the address bar) steam://install/107400 Now download that, then buy OA. Now follow this guide: (PLEASE NOTE: This guide is not mine, it is Kodabar's. Credit to him.) http://kodabar.blogs...rma-2-free.html