Update history:Bloons TD Battles (mobile)/Version 6.21

Version 6.21

Steam	21 November 2024^[1]

Version 6.21 is the final major update to the mobile version of Bloons TD Battles of 2024. It introduced the map Mayan Temple and balance changes.

Changes

Tiers	Changes
X-4 Supply Drop	Ability: cash per crate is now fixed ― $1,500–$2,000 → $1,750

Tiers	Changes
X-4 Technological Terror	Upgrade cost increased ― $20,000 → $22,000

Tiers	Changes
X-4 Bloon Area Denial System	Ability: wave count increased ― 5 → 6 Ability: delay between waves reduced ― 2s → 1.5s

Tiers	Changes
4-X Apache Dartship	Upgrade cost increased ― $15,000 → $16,000
X-3 Downdraft X-4 Support Chinook	Downdraft: attack cooldown increased ― 0.2s → 0.233s
X-4 Support Chinook	Ability: cash per crate is now fixed ― $1,500–$2,000 → $1,750

Tiers	Changes
3-X Super Wide Funnel	Upgrade cost reduced ― $4,600 → $4,000 Damage to BFBs increased ― 50 → 65

Tiers	Changes
2-X Advanced Intel	Upgrade cost reduced ― $500 → $300
4-X Reactor	Upgrade cost increased ― $2,800 → $3,000

Tiers	Changes
1-X Wired Funds 2-X Bloon Adjustment 3-X Monkey Stim 4-X Offensive Push	Wired Funds: cash per round now increases based on the round number
X-2 Attrition	Upgrade cost reduced ― $600 → $400
X-2 Attrition X-3 Finish Him! X-4 Misdirection	Attrition: cash per tick when the opponent has 1 life left increased ― $30 → $50

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The in-game description for Wired Funds was not updated to account for its change.
The update notes claim that Omni-Shredder was buffed to deal more damage to BFBs and ZOMGs. However, this change was mistakenly applied to Super Wide Funnel instead. Since Super Wide Funnel cannot suck in ZOMGs, it only benefits from the increased damage to BFBs.