So you have buttons on your mobile game, but you don’t want people to touch them? I am not sure I understand.
You could overlay a control node over the entire screen that absorbs all the inputs and sets as handled all the touch inputs perhaps.
I am not really sure I understand the situation or scenario very well, sorry.
I imagined something like marble run, where you control the marble by rolling your phone around and the marble acts like you are making slopes for it to roll down. But you wouldn’t have buttons on the screen to be touched if you did that.