Solid bloon is a bloon which cannot be popped in any way, not even having Monkey Intellegence Bureau.
It doesn't cost lives when it reaches the end, but monkeys or towers will keep attacking it.
Bloons Conception Wiki
Solid bloon is a bloon which cannot be popped in any way, not even having Monkey Intellegence Bureau.
It doesn't cost lives when it reaches the end, but monkeys or towers will keep attacking it.