How sad, I imagine the anguish of not being able to feed a child's hunger to play with a smartphone as well...
After all, you know that green grass and being outdoors are no longer fashionable. I'm sorry, no, I don't know how to help you and x me games should be banned. Especially a Smartphone, which, let's remember, should remain a watch at heart.
Be that as it may, I can't (and wouldn't on principle either) help you.