As I can get the mobile device does not close the game when the screen is not touched ? having the same function as a video , you can be a time and not seeing it shuts itself .
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If you're talking about the game running in the browser, by default you cannot close a mobile browser with any type of script. The user must exit the browser. The browser object, close browser function only works on computers.
The game runs on android. I do not want the phone screen when closing takes to play it. Like when you see a video that just does not quit .