OK really? I understand it takes a lot to make a game and I shouldn't be complaining about something that's free, but there is no excuse for not being able to completely mute the game. I'm giving it 1 star just for that. other wise, 5/5
Little bug you might wanna take note of. when you scroll left and right, (lets say left), when you cant go left anymore, if you hold the left button down and drag the mouse off screen to the right, you can scroll past the invisible barrier and keep going.