History VideoGame / BloonsMonkeyCity

** ''[[JustForPun Impoppable]]''. '''[[PunctuatedForEmphasis Good. Luck.]]''' Depends a lot on the stage you're in. In the beginning this is, indeed, impossible, since you'll end up buying all the available towers and it still won't be enough. You'll also face problems with leads and camos. Later on, though, very good strategy or TrialAndErrorGameplay may help you through.

** Not all that hard to obtain if you send [[PlayerVersusPlayer Monkey v. Monkey attacks]] every so often. Quite useful for long treks to the Consecrated Grounds to build the Temple Complex or the Phase Crystals for the Crystal Fusion Array, where you're likley, unless you capture tiles frequently, to face Impoppable after Impoppable for those damn tiles, as well as defeating them and enough other tiles to ''construct'' the fucking things.

* FourElementEnsemble: The four boss Blimps:
** Water: Bloonarius The Inflator resembles a fish and lives in a swamp.
** Air: Vortex, Deadly Master of Air casts air shockwaves that stuns and slows your towers.
** Earth: Dreadbloon, Armored Behemoth resembles a DrillTank, has armored properties of a Lead Bloon, and can grow a stone shell that takes damage for it instead.
** Fire: Blastapopoulos, Demon of the Core resembles a magma-filled blimp and throws magma to stun your strongest towers.

** In Boss Bloon events, spamming Tack Sprayers can be a good way to do fast damage early into the battle, (unless it's Dreadbloon; see FourElementEnsemble above.