hellorandy 3 Posted October 27, 2012 (edited) - Edited June 26, 2016 by hellorandy Share this post Link to post Share on other sites
Fraggle (DayZ) 15720 Posted October 27, 2012 Arma CO is Arma 2 and Arma OA combined. Once you have installed CO that's all you need to play. 1 Share this post Link to post Share on other sites
AmberHelios 2071 Posted October 27, 2012 steam removed the option to run co as of the last update if you have both installed it now run co as default 1 Share this post Link to post Share on other sites
POOPPOOP225 1 Posted October 27, 2012 how do you run it as default Share this post Link to post Share on other sites
AmberHelios 2071 Posted October 27, 2012 it now just does in steam if you want to run dayz use the beta option at add -mod=@dayz to the parameters Share this post Link to post Share on other sites
