The Big One



This is the final upgrade of the path 1 for the Mortar Tower. It costs $8500 (Easy), $10000 (Med), $10800 (Hard). Devastatingly large explosions, and each pops through 5 layers of bloon.

Trivia

 * You unlock this at rank 37.
 * These are useful for making the game lag less because of how large the explosions are, the huge range along with the fact that they take out lesser bloons instantly.