My brother shared with me his PSN account and set my console as primary to allow me to play his games. Sometimes I play games from his PSN account, but I'm logged on to my PSN account all the time. A few days ago he suggested playing co-op in one of his games.
Is it possible to play co-op in game which was bought only on his account? Or maybe is it possible to play the same game by both of us but everybody on his own PSN account?