DSS is allowed to play these games at him mums house and I have no issues with this as its his mums decision. However, he bought some of the games when he stayed for christmas and both him and DS1(15) spent a quite a long time playing with them. They are violent, which I don't like, and I was constantly having to nag at them to turn it off and do something else. In the end I also told DS1 he couldn't actually play on them because i was fed up of watching (and listening) to them killing people.
DSS is staying for four weeks over the summer and I really don't want him to bring them round. DH thinks I'm being unfair and is refusing to talk to him about it, and instead says that if they are allowed in his mums house then he should be allowed to play them in his dads house.
So basically would I be unreasonable to insist that they are not allowed?