Apopalypse Mode

"Once you start, you cannot stop. Bloons will keep coming until you lose. How far can you get?"

- Description in BTD5 when mouse scrolls over the Apopalypse Mode icon

 is a special mode in all versions of Bloons TD 4 and Bloons TD 5, in which there are no breaks between rounds. The cost of towers and upgrades are the same as in Medium Difficulty. Income is not earned by progressing from one round to the next, but only from Banana Farms and popping Bloons. The difficulty and number of Bloons in Apopalypse Mode also increases as the player progresses to higher rounds.

Apopalypse Mode has a B.F.B icon in BTD4. In BTD5, this was changed to a skull and cross-bones on a Black Bloon. This mode is unlocked at Rank 31 in BTD4 and BTD5, but Rank 36 in Bloons TD 5 Deluxe. In Bloons TD 4, this mode has infinite rounds; in Bloons TD 5, it only has 400 rounds.

The bloons that spawn from waves and spawns are random each time, and this gameplay changes quite a bit between each game. The earliest time possible for the highest type of bloon to spawn on that round is shown, but can vary.

Trivia

 * It is a pun on the word apocalypse.
 * The RBE in each round is different.
 * The player's Career Rank doesn't go up in this mode in BTD4, but in BTD5, it will.
 * The first Apopalypse Daily Challenge is Feb 2, 2012, and the track is Monkey Lane.
 * It might be easier to earn XP in Apopalypse Mode than Freeplay Mode, because XP and money does not decrease no matter what round.
 * The RBE on the first level of Apopalypse Mode in BTD5 is 24, in BTD4 it is much higher, having a 50 RBE
 * In BTD4, one of the achievements is Apopalypse Now; it requires the player to pass 100 rounds of Apopalypse to obtain it. It will reward the player with 50 upon completion.
 * Apopalypse Mode stops at round 400. After round 401 is started, the round suddenly stops sending bloons, however the player won't be able to start the next round, forcing the player to quit.
 * The icon for this in BTD5 is sometimes called Apopalypse Bloon.