Spiked Piston

The spiked piston is a tower that pushs the spike on it towards the bloons.

Stats
Range: See above

Attack speed: 1/s

Drawback speed: 0.1/s

Popping power: --

Layers damage: 1

Lead: No

Camo: No

Cost: $350

Left path
Longer piston ($150)

Increases ranage (See 1/0/0)

Heated spikes ($150)

Allows the piston to pop leads

Triple spikes ($600)

The piston as three spikes!

Spiked barrier ($1500)

The piston has even more spikes! (See 4/0/0)

Spiked death ($8000)

Triples the layers shred and quintuples it for MOAB-class bloons!

Middle path
Faster firing ($100)

Fires once every 0.7 seconds!

Even faster firing ($200)

Fires once every 0.4 seconds!

Supercharged piston ($500)

Fires once every 0.15 seconds! (Drawback is now 0.03 seconds)

Bloongrinder ($2000)

Fires so fast that you can't even see it moving, it pops 20 layers a second though.

Hypercharged grind ($4500)

Hypercharged grind ability: Shred 100 layers a second for 10 seconds, enough to incinerate a BFB!

Right path
Critical hit ($150)

Every second shot pops 2 layers

Powerful spike ($200)

Every shot pops 2 layers

Knockback ($500)

Every shot makes non-MOAB-class bloons move backwards at the speed of a blue for 0.2 seconds

Super knockback ($1000)

Bloons are now pushed 3 times more back

MOAB push ($2000)

Pushes MOAB class at half their speed backwards!