Airburst Darts (BTD5)

"Airburst darts split into 3 on impact for massively increased popping power."

- Description from BTD 5 iOS

Airburst Darts is the second upgrade on path 2 for the Monkey Sub in BTD5. It causes the darts fired by the sub to split into three as they hit their target (four with the tier 3 specialty building and Quad Burst Monkey Knowledge). This greatly increases the number of bloons that the sub can pop. This is also a rather expensive 2nd tier upgrade, even more so in BTD Battles Mobile. In BTD5, it costs $635 on Easy, $750 on Medium, $810 on Hard, and $900 on Impoppable. In BTDB Mobile, it costs $1000.

Update History (Bloons TD Battles Mobile)
August 18, 2014 (Need what update version this was).

Airburst Darts price increased ($750 → $800).

3.1

Airburst Darts price increased ($800 → $1000).

Trivia

 * The hat for Airburst Darts in BTD5 is now used for BTD6 Monkey Sub's Triple Guns upgrade.