Pins Bloons in place for a short time when struck.
~ BTD6 description

BTD6 artwork

Pin is the 2nd upgrade of Path 3 for the Engineer Monkey. It allows the Engineer to pin down all affected bloons for 1.0s, similar to a stun. This pinning effect cannot affect Lead Bloons or Ceramic Bloons. It costs $220 on Medium.


  • When further upgraded to Double Gun, it become quite useful against normal bloons.
  • It is best not used after Round 81, as Super Ceramics are generally the only non-MOAB-class bloons that appear on those rounds.
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