The headline says it all, really. The single-player game of BF3, which hasn’t had much attention so far, will be playable with a chum. The demonstration was shown on 360, of course, with the two developers pretending to not know what they were doing. They totally rescued a hostage! They drove a tank together! They revived each other! But there you go – co-op. In Battlefield 3. Got it? Good.