Swarm is the 40th level, and the fourth level in the Sneak Peaks zone in Bloons 2. There are a lot of Bee Bloons which need to be used to pop all the bloons.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.