Not a gameplay suggestion, but ...
Scenario: I am playing TF and something else makes me put the device aside. Half an hour later I realize that I forgot to switch off the screen. The device is incredibly hot and its battery almost drained. (Happens to me a lot on various Android devices)
To prevent that the game could detect inactivity and allow the OS to switch off the screen and/or go into standby even when the game is in the foreground.


