Rounds

Rounds (also known as levels, waves, or stages) are the levels in the BTD series. Each round gets harder as the player progresses. The Red Bloon Equivalent (RBE), premiering in BTD4, shows how many pops to finish a round. In Bloons Tower Defense 4, the range of RBE is 2881116.



Bloons TD 5 Rounds
First instances of types of bloons are in bold.

The max. for popping bloons is valid only if regrowth bloons that have multiple children do not regrow layers with multiple children (e. g. 1 Zebra --> 1 Black & 1 White --> 2 Zebra bloons).

Trivia

 * Round 1 has a higher RBE than the level in which the Camo Bloon debuts.
 * The final round in BTD4 (round 250) has an RBE of 2881116 or 999 BFBs.
 * Apopalypse Mode in Bloons Tower Defense 4 and Bloons Tower Defense 5 have rounds, but there are no pauses in-between each one.
 * The Red Bloon Equivalent is in the bank RBE.
 * Round 65 had an update that added 2 B.F.Bs.
 * Even though it is the last and contains a ZOMG, Round 85 is not the hardest (discounting Freeplay Mode).
 * Every Round introducing a new bloon type has a remarkably lower RBE than previous rounds, except round 35 introducing rainbow and round 26 introducing zebra.
 * There is no longer any limit to how far you can go in freeplay. The round 500 cap has been removed.
 * In certain Daily Challenges, rounds of 1000+ can be reached.