Gamesharkjj

Hello. I have been looking at ACR and have decided that I want to buy it. I have ArmA II, OA and reinforcements (All retail), however I never have OA installed as it seems a waste of hdd space for just a campaign. My question is, if I buy ACR from the bistore will it work with my installed game set-up? Thanks in advance for any help. :)

I never just played ArmA 2 base haha, I had rein which I'm fairly sure adds all the new improvements. What I only just realised is that the actual BAF and PMC installation only takes up ~1.25Gb of space. :p Now that they are all installed I shall proceed to purchase ACR!

If I installed OA aswell, would it work?