—Image © Kixeye
In-game Sprite
Brain Animation
Monster Locker Level3
Favorite TargetHarvesters, Town Hall and Silos
DescriptionCunning and greedy, Brain's pulsating cerebral cortex and high intelligence make him perfect for looting resources.
Special AbilityInvisibility
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Monster Information

"Unlocking me was the smartest thing you've done all week. Not to brag, but I graduated valedictorian from Backyard State and double majored in Looting Resources and Mechanical Engineering. Send me into battle and I'll use my superior intelligence to make sure you come out on top. Gather some goo and fire up the Hatchery!"

Brain is a monster with good speed, somewhat high HP, and moderately low attack damage. Brain is a looter, meaning that it will focus Resource Gatherers, Storage Silos, and Town Halls first. As with any looter, Brain will loot more than other monsters, making it useful for attacks.

When defending, Brain is only decent. There are other monsters more viable for defending. If you really want to, or if the situation calls for it, then it is possible to use Brains for defending.

Special Ability

Brain Lab

Brain Invisibility

Brain Invisible Animation

Invisi-brain sprite in the game


Allows Brain to turn invisible, making towers and other monsters (champions and bunker monsters) unable to attack it. This is only activated while Brain is moving, and it will become vulnerable again once it starts attacking any building.

While having Invisibility at level 1, Brain will be able to attack once before becoming visible again. At level 2 and 3, it will stay invisible for 4s and 8s more from the moment it stopped moving. Using this ability in bunkers is effective, because Brain will guarantee at least one hit on the enemy.

Level 1 Level 2 Level 3
Cloak Delay Putty-icon Putty Time Cloak Delay Putty-icon Putty Time Cloak Delay Putty-icon Putty Time
2s Putty-icon 3,000,000 2d 4s Putty-icon 4,500,000 2d 8s Putty-icon 6,000,000 2d

Invisible Brains attacking Eye-ras

Upgrade Progression

Level 1 Level 2 Level 3 Level 4 Level 5 Level 6
Movement Speed 2kph 2kph 2kph 2kph 2.1kph 2.2kph
Health 600 700 750 800 1,100 1,400
Damage 100 100 200 250 300 350
Goo Cost Goo-icon 12,000 Goo-icon 20,250 Goo-icon 30,375 Goo-icon 35,000 Goo-icon 50,000 Goo-icon 75,000
Housing Space 30 spaces 30 spaces 30 spaces 30 spaces 30 spaces 30 spaces
Production Time 5m 42s 5m 42s 5m 42s 5m 42s 5m 42s 5m 42s
Upgrade Cost Putty-icon1,024,000 Putty-icon1,024,000 Putty-icon2,056,000 Putty-icon2,870,000 Putty-icon4,500,000 Putty-icon6,000,000
Upgrade Time 2d 4h 12h 16h 20h 1d 16h 2d 12h

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