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Attrition is an upgrade for COBRA. It allows players to either steal 2 lives from their opponent (on Assault Mode) or add 2 lives to themselves (Defend Mode) once every 15 seconds. Many of these can be a threat for opponents in Assault mode and considered an overpowered upgrade to many - especially to newer players.

Update History (Bloons TD Battles Mobile)Edit

3.1

Nerf If the opponent has only 1 life left, another Attrition will not kill the opponent, but instead provide the player $30.

TriviaEdit

  • Exactly 75 Attritions (19 minutes w/ 1 COBRA or 15 seconds w/ 75 COBRAS) is needed to bring an opponent down to 1 life in Assault mode (as long your opponent does not Attrition you back or use the Support Chinook ability), or to go to full health in Defensive mode.
  • There is a glitch that if a player gains more than 150 lives with the Support Chinook ability and then uses Attrition, the amount of lives resets back to 150.
  • When looking at the game code, the way in which Attrition’s life-gaining capability works isn’t simply just a gain of lives. In the game code relating to the Attrition algorithm, the game actually generates a Support Chinook crate worth 2 lives that picks up automatically.
    • The file that the code for this is in is called "CobraMonkeyLifeVampire.weapon", instead of something like "CobraMonkeyAttrition.weapon".