Sorry for the late reply. You must be on the phone homescreen and you can click the phone icon on the UI to exit.
It worked after I Alt+F4'd out of the game.
But at the time, hitting return looped infinitely between the rules for [rock, paper, scissors], the rules for the dice(?) game, the [play, rules, return] screen, and the choose game screen—it wouldn't go back to the phone's home screen.
