Board Thread:General Discussion/@comment-25302371-20150308073148/@comment-26109599-20150424122313

Spike Factories are pretty good in BTD5, but they really shine in BMC. The thing about BMC is that it's usually going to be ZOMGs or DDTs that kill you (especially the latter in Contested Territory). Spike Factories upgrades to 2/3 are a great counter for these bloons; in fact, they're the best counter for DDTs. Also, in BMC, you are rewarded for capturing a tile with no lives lost. This means that parking a Spike Factory at the end of the track, even if it's 0/0, can stop those few reds or blues or greens from leaking, and thus you get five extra bloonstones.