Spike Storm is an upgrade for the Spike Factory, first released in BTD4 Generation. It is characterized by the sudden generation of large quantities of spike piles across a wide amount of track, usually the entire track. Spike Storm's surges of spike piles can be passive or activated, depending on the games that Spike Storm appears in. Since the Bloons TD 5 Generation, Spike Storm requires Special Abilities to activate, though the passive surging of spike piles returns in the Bloons TD 6 Generation via the Carpet of Spikes upgrade.
The Spike Storm upgrade in both the Bloons TD 5 Generation and Bloons TD 6 Generation games follow along the upgrade path that involves faster production of spikes and improved engineering, in the form of specialized damage to MOAB-class bloons (via MOAB-SHREDR Spikes) and the creation of masses of spikes at once.
The following pages correspond to the Spike Storm upgrade:
- Spike Storm (BTD4), the fourth upgrade for the Spike Factory in BTD4.
- Spike Storm (BTD5), the fourth upgrade of Path 2 for the Spike Factory in BTD5.
- Spike Storm (BTD6), the fourth upgrade of Path 2 for the Spike Factory in BTD6.
- Spike Storm (BTDB2), the fourth upgrade of Path 2 for the Spike Factory in BTDB2, nearly identical to its BTD6 counterpart.