Do I need CO or can I just buy OA

[arabes 0]

Hi there, I already own ARMA 2 from way back and I really want to play Day Z. My question is do I need to buyOperation Arrowhead as I already own Arma 2 or do I need to buy Combined Operations which is Arma 2 and OA. I am really hoping I just need OA as I am stony broke.

[Palora 6]

You need CO, officially that means you need to buy Combine Operations or Arma 2 and Arma 2 Operation Arrowhead.

[[email protected] 1]

If you already own ARMA2 then just get Operation Arrowhead and patch it to Combined Ops.

http://forums.bistudio.com/showthread.php?101214-ARMA-2-CO-%28how-to-combine-ARMA-2-into-ARMA-2-OA-and-use-together%29

For steam version I would suggest you get the Combined Ops pack as ARMA2 through Steam is a right pain.

[Reklin 56]

You DON'T need to buy Arma2.

You can simply download Arma2Free from steam, and buy Arrowhead. Confirmed working fine.

[arabes 0]

Thanks so much for your help guys, I really appreciate it :)

[sorophx 25]

You can simply download Arma2Free and buy Arrowhead.

^this

ArmA Free link (a torrent is even available) in case you can't find it on that piece-of-shit-Steam (it's listed in demos there)