::''For us, a lot of the core game has actually come out of singleplayer, but what we've done along the way, is we've always had [[cooperativeplay]] play enabled. So people play cooperatively all the time. Any time anything does work for cooperative play we fix it right away. So any mechanics that don't work, any kind of balancing or tuning that needs to be done, we try to do it simultaneously for both – but we do focus on single-player more.''