Red Bloon

Red Bloons are the lowest level of Bloon in the Bloons Tower Defense games. These only take a single hit from any projectile or explosive to be popped. Nothing appears when this Bloons is popped. They are one of the slowest moving Bloons in the game.

In Bloons Tower Defense 4, a way of rating the difficulty of a level was introduced that involved red bloons. The RBE (Red Bloon Equivalent) is the number of pops that must happen for all bloons to disappear.