For the BTD5 counterpart, see 9-Inch Nails.
Massivization allows nails to pop 8 Bloons at once, including frozen. Also increases Foam effectiveness.
~ BTD6 description


Oversize Nails is the 1st upgrade of Path 3 for the Engineer Monkey in BTD6. It corresponds to the 9-Inch Nails upgrade from the BTD5 generation. It increases the pierce of the main Engineer's nailgun nails from 3 to 8, and allows them to pop Frozen Bloons. Unlike BTD5, this upgrade now also affects Sentry Guns, which now improves the Engineer's sentries to have +1 pierce and can pop Frozen Bloons.

It costs $380 on Easy, $450 on Medium, $485 on Hard, and $540 on Impoppable.

Tips[edit | edit source]

  • It makes useful early-game pierce akin to a Spike-O-Pult with greater attack speed but with significantly less pierce.
  • When further upgraded along Path 3, particularly with Double Gun, it is quite reliable at stalling early-game bloons.
    • This makes it the best early game Engineer Monkey.
  • Oversized Nails is one of the few sharp projectile towers that can pair well with Ice Shards for the activation of multiple ice shards.

Version History (BTD6)[edit | edit source]

20.0
  • Buff.png Oversize Nails now adds +1 pierce to all sentries deployed by the Engineer and allows them to pop Frozen bloons.
22.0
  • Buff.png Description changed from "Massive nails pop 8 Bloons at once, and Frozen Bloons." to "Massivization allows nails to pop 8 Bloons at once, including frozen. Also increases Foam effectiveness."

Gallery[edit | edit source]

Trivia[edit | edit source]

  • In BTD5, a similar upgrade that increased pierce used the name "9-Inch Nails". In BTD6, "Oversize Nails" was renamed to its current name.
Community content is available under CC-BY-SA unless otherwise noted.