That's what I'm talking about, for each emulator. I bound num1 + num3 to it (combination of 2 buttons on our joypad) but it won't actually close the game, just run it in the background.
E: To make matters worse, if I try to open another emulator, it then just sits there and loads the new one, then I'm forced to hard boot the machine as I can't get back out. I just tried changing the hotkey to see if it has to do with combinations of buttons, but no. Even with escape it just pauses and runs it in the background.