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.

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.

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 White 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). Other Bloons do not gain more health or give extra cash, despite also spawning less Bloons.

Status resistances

Some statuses' duration is decreased 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

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.
• 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).

Game Hints

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Other round sets

This section is incomplete. You can help out by expanding it. The editor who added this notice elaborates: Needs all the quest round sets

• Alternate Bloons Rounds