Boss Challenge

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Boss Challenge is a game mode in Bloons TD 6 involving Boss Bloons introduced in version 40.0. In this mode, players can challenge Bloonarius, Lych, Vortex, Dreadbloon, Phayze, or Blastapopoulos on any map of their choice. This mode features no rewards, but can be played for the challenge alone, to improve the player's own scores or can be used as practice for Boss Bloon Events.

Mechanics

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Strategy

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Update history

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Version 48.0

Co-op: Default map split now set to Free-for all.
Co-op: Map split can now be changed.
The game will now keep track of the highest tier which has been defeated.

Version 51.0

Paragon limit is now applied per player and not globally

Version 54.0

Diamondback is now available

Version 55.0

Corrected Lych's roundset within Boss Challenge mode
Projectiles no longer spawn sub-projectiles when destroyed by the Boss Bloon entrance
- Note: This is an overall nerf for towers such as the Mega Massive Munitions Factory

Gallery

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Modes in Bloons TD 6

Easy	Primary Only • Deflation
Medium	Military Only • Apopalypse • Reverse
Hard	Magic Monkeys Only • Double HP MOABs • Half Cash • Alternate Bloons Rounds • Impoppable • CHIMPS
Other	Co-op • Double Cash Mode • Fast Track Mode • Odyssey • Quests • Sandbox • Boss Challenge