Carnaxus 1 Posted January 4, 2013 So my friend doesn't currently have enough money to buy ArmA II: CO from Steam, and is using the free version. I'm running ArmA II: OA. Can he join my server, or do I have to use base ArmA II? Share this post Link to post Share on other sites
xgamer224 1 Posted January 4, 2013 you have to use base arma 2. sorry. :( Share this post Link to post Share on other sites
RadicalAtHeart 11 Posted January 5, 2013 Yes they are compatible. I think this results into ArmA 2 Combined Operations Lite if I am not mistaken Share this post Link to post Share on other sites
Leon86 13 Posted January 5, 2013 You'll have to host with the base arma or arma 2 free. Share this post Link to post Share on other sites
ryanbeckey0 1 Posted January 5, 2013 my friend only has OA, and hes taken the addon folder from arma 2 free and put it into a mod folder in OA so he can play CO by launching arma 2 free as a mod Share this post Link to post Share on other sites
