Footprint

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Visualization of different tower footprints in Bloons TD 6

Footprint is the area of space that a tower occupies when placed in a map in the Bloons TD series. A tower can only be placed if its footprint does not overlap any other towers' footprints or terrain the tower cannot be placed on. A footprint is usually either a circle (defined by a radius) or a rectangle (represented by height and width). Easier maps tend to have more open spaces for placing larger or higher amounts of towers, while harder maps often limit the amount of space that towers can be placed on (sometimes preventing certain towers from being usable at all).

When placing a new tower, the player must make sure to have enough open space to place it beforehand, as a new tower cannot override area that is already occupied. Players can remove the towers that use the desired space, usually by selling them.

Bloons Tower Defense / Bloons Tower Defense 2 / Bloons Tower Defense 3

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In Bloons Tower Defense, Bloons Tower Defense 2, and Bloons Tower Defense 3, each tower has an invisible shape object (internally referred to as a hitbit) that determines its collision detection.

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  Dart Monkey
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  Tack Shooter
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  Boomerang
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  Spike-o-pult
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  Cannon
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  Ice Ball
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  Monkey Beacon
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  Super Monkey

Bloons TD 4

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Bloons TD 5

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Bloons TD 6

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In Bloons TD 6, the majority of towers have a circular footprint, with a few exceptions, listed on the table below.

Footprints of towers in Bloons TD 6

Tower	Radius
Sub-towers	0
Beast Handler's beasts	2
Geraldo's placeable items (Shooty Turret, Paragon Power Totem, Creepy Idol, Genie Bottle, Rare Quincy Action Figure)	3
Banana Farmer, Tech Bot, Energizing Totem	5
Dart Monkey, Tack Shooter, Ice Monkey, Glue Gunner, Sniper Monkey, Ninja Monkey, Alchemist, Rosalia (sub tower)	6
Boomerang Monkey, Desperado, Bomb Shooter, Monkey Sub, Dartling Gunner, Wizard Monkey, Druid, Engineer Monkey, Beast Handler, Cave Monkey, Battle Cat!, All Heroes (Except Rosalia, Captain Churchill, Pat Fusty)	7
Monkey Buccaneer, Mermonkey, Spike Factory, Captain Churchill, Pat Fusty	8
Monkey Village, Mortar Monkey, Super Monkey	11
Monkey Ace	18 × 28 (rectangle)
Heli Pilot	27 × 40 (rectangle)
Banana Farm	30 × 30 (rectangle)
Sun Temple, True Sun God, VTSG	37 × 40 (rectangle)

Some maps can have areas where players can place towers where they visually wouldn't fit (e.g. the altar in Encrypted) and in the other hand, there are also places where towers that can fit are restricted, for example, Heli Pilots cannot be placed in on the top right section of Erosion, but Banana Farms can despite having a larger footprint.

Bloons Adventure Time TD

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Bloons TD Battles 2

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