List of rounds in BTD6

This is a list of all standard rounds in Bloons TD 6 and the default round-based Bloon modifiers. Some modes, quests, and events have different rounds and/or modifiers.

Standard rounds

Note:

• The RBE amounts do not factor in the reduced RBE of the round 40 MOAB when playing on Easy, or the RBE reduction from Big Bloon Sabotage, or any mode/editor-related RBE modifiers.
• To determine the RBE for easy mode, subtract 67 from the RBE value from round 40 onward.
• The XP amounts do not factor in the reductions to tower and player XP in freeplay and after round 100 (e.g. the values are only accurate for Hero XP after the last required round of the current difficulty).

Post-140

Rounds after 140 are randomly generated, but there are a few rounds with restrictions on what can be spawned. Round 200 will only spawn two Fortified BADs. Round 163 will only spawn Ceramics, Fortified ceramics and Fortified Leads as a reference to round 63. Round 263 will only spawn MOABs, Fortified MOABs, and Fortified DDTs.

Once the player reaches round 500, the health scaling reaches its maximum (+500% per round). At round 1636, all possible Bloon groups can spawn at random will spawn every round. The only random thing is the order which they spawn, until round 9999.

Pushing the limits

At this point, these rounds are impossible to reach without cheating because Bloons move too fast to react. Round 10,000 only has 200 fortified BADs, and the next five are specifically for testing. Round 10,001 has 9999 Fortified ceramics, round 10,002 has 100 MOABs, round 10,003 has 100 BFBs, round 10,004 has 100 ZOMGs, and round 10,005 has 100 DDTs.

From round 10,006 onward, only 200 fortified BADs spawn every round, until round 536,927. Starting at round 536,928, no Bloons spawn at all, up to round 1,073,798, in this case the game will simply consider the round won instantly and move to the next one. Next up is a 1,073,742-round cycle between a round with 200 fortified BADs and other with no Bloons, lasting until round 10,133,701.

At round 10,133,702 and beyond, nothing will spawn at all, and the round number continues increasing until reaching the 32-bit signed integer limit of 2,147,483,647 where it overflows and jumps to −2,147,483,648, and then continues increasing. After a lot of waiting, eventually the round counter will loop back around to round 0, and then back to round 1 where the cycle starts again. This means round 0 is the final round that can theoretically be reached.

Game hints

End of round	Text
2	You get 1 cash for every layer of Bloon popped, plus some bonus at the end of each round.
7	Keep playing Bloons TD 6 regularly and check for new updates - maps, heroes, challenges, and other awesomeness.
12	The more you use a certain Monkey, the more upgrades you will unlock for using it.
26	See those Zebra striped Bloons? They combine the meanness of White Bloons and Black Bloons, and contain one of each just for fun.
32	You saw one Camo Bloon back on round 24. Hope you're ready for more!
38	End of next round has 2 Regrow Rainbow Bloons. If handled poorly, 2 could turn into many more...
39	First MOAB-Class Bloon next round. Don't say you weren't warned!
41	Coming up: Regrow Rainbow Bloons and Camo Rainbow Bloons. You all sorted for this?
45	Fortified Ceramic Bloons coming up next.
50	Lots of Camo Ceramic Bloons could wreck your day. Just sayin'.
54	BTD6 is awesome. Life is awesome too. Don't forget to have a break sometimes and do something else. Then play more BTD6!
58	Can you pop Lead? Can you pop Camo? How about... Camo Lead?
59	Final round for Medium difficulty coming next. Congratulations! If you can pop the BFB Bloon that is...
62	If you played BTD5 you'll remember what Round 63 was like. If you are new to this game, let's just say: many tightly packed Ceramic Bloons.
73	Next round: Camo Regrow Fortified Ceramic Bloons. Phew! What a mouthful.
77	What happens when you cram 75 Ceramic Bloons into a tiny space? You're about to find out!
79	Final round for Hard difficulty next. Throw everything you've got at the ZOMG Bloon. It's big and slow, but very very tough.
89	What's a DDT Bloon you ask? Like a MOAB crossed with a Pink, Camo and Lead Bloon. In all the bad ways.
100	Congratulations on beating round 100! Enjoy your reward!

Modifiers

Bloon speed

The speed of Bloons increases by 2% per round starting on round 81 but with sudden jumps on some rounds.

Rounds	Formula	Note
81-100	$(1+(round-80)\times 0.02)$
101-150	$(1.18+(round-80)\times 0.02)$	additional 18% speed on round 101
151-200	$(1.58+(round-80)\times 0.02)$	additional 40% speed on round 151
201-251	$(2.08+(round-80)\times 0.02)$	additional 50% speed on round 201
252+	$(2.56+(round-80)\times 0.02)$	additional 48% speed on round 252

MOAB health

The health of MOAB-Class Bloons increases per round starting on round 81. This does not affect their life lost if leaked.

Rounds	Modifier (per round)	Formula
81-100	+2%	$(1+(round-80)\times 0.02)$
101-124	+5%	$(1.4+(round-100)\times 0.05)$
125-150	+15%	$(2.6+(round-124)\times 0.15)$
151-250	+35%	$(6.5+(round-150)\times 0.35)$
251-300	+100%	$(41.5+(round-250)\times 1.00)$
301-400	+150%	$(91.5+(round-300)\times 1.50)$
401-500	+250%	$(241.5+(round-400)\times 2.50)$
500+	+500%	$(491.5+(round-500)\times 5.00)$

Cash per pop

Bloons give less cash per pop starting on round 51.

Rounds	Modifier
51-60	50%
61-85	20%
86-100	10%
101-120	5%
121+	2%

Spawning changes and Super Ceramic Bloons

Starting on round 81, all non-MOAB-Class Bloons will only spawn one child Bloon when popped instead of two in order to reduce lag. (Zebra Bloons will always spawn Black Bloons.) To compensate, Ceramic Bloons are replaced with Super Ceramic Bloons, which have 60 health instead of 10 (120 instead of 20 when fortified) and give $87 when the Ceramic layer is popped instead of $1 (affected by cash per pop scaling). Leaking a Super Ceramic Bloon will cause a 65 lives lost (75 if fortified). Other Bloons do not gain more health or give extra cash, despite also spawning less Bloons.

Status resistances

The duration of certain statuses is reduced starting on round 150.

Rounds	Duration reduction
150-199	10%
200-249	20%
250-299	30%
300-349	40%
350+	50%

Affected statuses
Stun:Weak
Stun:Strong
Snowstorm:Regular:Freeze
Snowstorm:Regular:DamageBlock
SlowMaimMoab
SlowMaimBfb
SlowMaimZomg
SlowMaimDdt
MaimBad
Knockback
Sabotage

Update history

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Version 25.0

•  Rounds 101−120 are now set

Version 26.0

• Rounds 121-140 are now set

Version 53.0

“

The final freeplay income cut has been pushed back 20 rounds for a little more juice finishing off long Boss Fights, and to give less harsh of a cutoff for early freeplay base cash earnings. — Update notes

”

Rounds	Changes
101–120	Cash per pop modifier increased ― 5% → 8%
121–140	Cash per pop modifier increased ― 2% → 5% (rounds 141+ remain at 2%)

Version 54.0

Rounds	Changes
101–120	Cash per pop modifier reduced ― 8% → 5% (undocumented)
121–140	Cash per pop modifier reduced ― 5% → 4% (undocumented) Note: Rounds 141+ remain at 2%

Trivia

• Despite Camo Regrow Fortified Ceramic Bloons first appearing on round 67, a game hint only mentions them at the end of round 73.

Other round sets

• Alternate Bloons Rounds
• Apopalypse
• Rogue Legends
• Frontier Legends
• Intense Bloon Rounds
• MOAB Madness
• Fast Upgrades
• New Dart Just Dropped
• Scoop's Tall Tale
• Hug a Bloon
• Psi Insight!
• Quincy, Student of Quincy
• Trial by Fire
• Royal Tank Academy
• Blade Sauda Nowhere
• Striker Instruction!
• Drone Flying 101
• Tinkerer's Tutorial
• Obyn's Gardening School
• Brickell Bootcamp
• A Guide to the Book of Spirits
• One Stop Pop Shop!
• Boss Bloon Events / Boss Challenges:
  • Bloonarius, Phayze and Blastapopoulos
  • Lych
  • Vortex
  • Dreadbloon