Sharp Shurikens (BTD6)

"Shurikens can pop 4 Bloons each."

- Description

Sharp Shurikens is the 2nd upgrade on Path 1 for the Ninja Monkey in BTD6. With this upgrade, shurikens pop up to 4 bloons instead of 2, and the Ninja Monkey attacks every 0.42s.

It costs $295 on Easy, $350 on Medium, $380 on Hard, and $420 on Impoppable.

Summary
Extra pierce for the shuriken attacks are quite useful for early-game, especially in combination with Seeking Shuriken. It has little improvement for Upper Path 2 or Upper Path 3, as it only affects the shuriken attack, however.

Tips

 * A Ninja Monkey with Sharp Shurikens can be used for early game because of its high pierce, fast attack speed, low cost, and camo popping power.
 * Crosspathing this upgrade with Upper Path 3 is near worthless, as the Sharp Shurikens upgrade only affects the shuriken itself.
 * As for crosspathing with Shinobi Tactics, it's generally unnecessary to buy this upgrade, as the extended buff range from Ninja Discipline is sufficient. But adding in Sharp Shurikens can be helpful if a majority of the DPS in the game comes from spamming Shinobi Tactics.

Trivia

 * Shurikens thrown by a Ninja Monkey with Sharp Shurikens or higher will throw light-grey titanium shurikens instead of dark-grey iron shurikens.
 * The Sharp Shurikens Ninja Monkey appears on the Bloons TD 6+ animated cover art. The monkey appears to be looking around squinting his eyes. In addition, he occasionally moves his limbs, including tail. Bandana and belt wave as the Ninja levitates vertically.
 * Other monkeys included on the artwork include Arcane Spike, Ezili, and Faster Engineering.