How can Wittgenstein's language games be criticised?

With regard to religion, one criticism against Wittgenstein's language games could be that this idea completely closes off the subject of religion for discussion. By suggesting that only those involved in religion can discuss it effectively, those outside of religious spheres are completely executed from any meaningful discussion. As such, the whole theory of language games is relatively exclusive. Further, it relies on an understanding that there is no hope of people from different cultures or sub-cultures being able to communicate effectively, which in itself, raises all sorts of issues. Another criticism can be found in the suggestion Wittgenstein makes, which supposes that statements such as 'God exists' made by religious believers, do not connote a real, empirical argument, but are instead just statements expressing attitudes. This is contradictory to what many religious believers would argue they mean when making such statements, and so is, in a sense, dismissive of such claims.