I thought you might be interested in looking at ArmA 2 Retail, OA Steam.
https://forums.bohemia.net/forums/topic/119206-arma-2-retail-oa-steam/?do=findComment&comment=1984915
× Pasted as rich text. Restore formatting
Only 75 emoji are allowed.
× Your link has been automatically embedded. Display as a link instead
× Your previous content has been restored. Clear editor
× You cannot paste images directly. Upload or insert images from URL.