I don't think it needs a mute button. Severe if you see this, just turn the volume down on your pc and listen to music on your phone. :P great game btw but it needs more levels, I can't share 1st with someone on the leaderboard.
Bloons have poisonous gas in them and if they get to the end, The poisonous gas is released into their village. This will then spread throughout the world, And before you know it "POF" Everything is gone. The End :)
 "BLOXcalibur"){kind=icon}
 "Bloons TD 5"){kind=icon}
 "Knightmare Tower"){kind=icon}
If there is enough of a call for more levels then more levels you shall have! Edit: As of June 29th 2018 there are now 50 insanely difficult levels!