Spiked Mines (BTDB2)

Spiked Mines is the 4th upgrade of Path 1 for the Spike Factory in Bloons TD Battles 2. It is similar to its BTD6 counterpart, aside from a shorter base lifespan of mines.

It costs $9,500, and is unlocked with 15,000 XP.

Summary
Grouped popping.

Tips

 * TBA