This article is a stub. You can help Bloons Wiki by expanding it. For the eighteenth level of Bloons Junior with the same name, see Hidden Secrets (Level 18). Hidden Secrets (Level 10) is the 10th level of Bloons Insanity. Retrieved from "https://bloons.fandom.com/wiki/Hidden_Secrets_(Level_10)?oldid=160992" Categories: Article stubs Levels Bloons Insanity Levels Community content is available under CC-BY-SA unless otherwise noted.