Apopalypse Now is an unlockable achievement in Bloons Tower Defense 4. It is achieved by reaching round 100 in Apopalypse Mode. It awards 
50 upon completion.
Trivia[]
- There are 2 Daily Challenges in BTD5 with the same name in Apopalypse Mode.
- In BTD5 Mobile, one takes place in Monkey Lane, and one at Mount Magma
- This is a reference to the 1979 film Apocalypse Now.