Eagle Wing and BAF Operation Crimson Lance campaigns are SP only. EXTENSIVE MULTIPLAYER - Play the campaign missions in cooperative mode or join duty in the massive multiplayer battles with up to 50 players. From 2-player co-op missions to 60 vs 60 competitive wars, Arma 3 will feature something for everyone.

If you wonder what campaign to coop with there is actually on 3 options here on official missions Arma2 Harvest Red campaign for 4 players (no respawn), Arma2 Operation Arrowhead campaign for 4 players (with auto-respawn) and PMC Operation Black Gauntlet campaign for 2 players only. Arma 3 will play host once more to the Arma series' massive multiplayer playerbase who, when combined with the ability to create custom missions and content, are playing a vast array of official and user-generated missions and gametypes daily. We have UK based TS3 server as well where bunch of people gather for Arma2 COOP. Unfortunately I'm going to take a break on playing Arma2 after finishing Dogs Of War (for the second time), but well that can take more than 2 tuesday nights since its a longest mission there is. I host tuesday evening/night with server name usually there is just 2 or 3 of us, so if you wish to join, then PM me. Tactical games are built for co-op, and ArmA 2 is no exception to the rule. Singleplayer->Campaign->Host->(change Host: LAN to Host: Internet)->OK and so on. The games campaign can be played online or via LAN in a four player co-op mode. You can host coop yourself and play like singleplayer until someone joins in and takes control of one of your AI teammates.

Arma 2 coop campaign