Alternate Bloons Rounds

Alternate Bloon Rounds is a mode in BTD6. You start on Round 3. Bloon rounds are not the same as the standard rounds, but instead there is an entirely unique set of rounds. Stronger types of Bloons appear in rounds more earlier than normally, making the difficulty more challenging. Notably, the first Camo Bloons appear on Round 5, the first Lead Bloons appear on Round 10, and so on.

Additionally, Regrowth Leads appear on Round 28. This means you can set up a Regen Farm with the X-X-3 Alchemist (Lead to Gold) and the 3-X-X Druid. This cannot be done in the regular set of rounds as Regrowth Leads do not appear. (Though this can be done Since Round 90 has Camo Regrowth Leads)

Rounds
First instances of types of bloons are in bold.

Note: Rounds 1 and 2 do exist in the code, but never appear in Alternate Bloons Gameplay. Round 1 has 20 Blue Bloons, while Round 2 has 20 Regrow Blues. ''This section is incomplete. Help by finishing off the missing rounds.''

Trivia

 * In this mode, the MOAB is the only MOAB-class bloon whose non-Fortified form appears more than one round later than its Fortified form.