Board Thread:Questions and Answers/@comment-25986124-20150307081946/@comment-66.176.47.39-20150308165736

You could use bloonstones on them not because of the quests but the new towers, especially the bloonchipper but not the helicopter because that one is impossible, even with bloonstones (I spent  about 120 and still lost) and you could get the bloonstones back by sending mvm attacks