Star level

Star level is a game mechanic for characters in Bloons Adventure Time TD. By spending character resources, characters can be levelled up to unlock permanent enhancements, more upgrades, and additional trinket and ally slots. All characters start at star level 1 and can be levelled up to star level 10, with the cost to level up increasing at higher levels.

Star level bonuses

• Levels 2, 4, 6, 8, and 9 unlock a permanent bonus for one of the character's stats.
• Levels 3, 5, and 7 unlock a new upgrade (or two upgrades in the case of Hunter Marceline at level 3).
• Levels 2, 4, 6, 8, 9, and 10 unlock a trinket slot.
• Levels 3, 5, and 10 unlock an ally slot.
• Level 10 unlocks a bonus unique to that character.

Star level	Cost		Bonuses
	This level	Total
2	3	3	Stat bonus + fourth trinket slot
3	8	11	New upgrade(s) + second ally slot
4	15	26	Stat bonus + fifth trinket slot
5	30	56	New upgrade(s) + third ally slot
6	50	106	Stat bonus + sixth trinket slot
7	75	181	New upgrade(s) + seventh trinket slot
8	110	291	Stat bonus + eighth trinket slot
9	150	441	Stat bonus + ninth trinket slot
10	200	641	Unique bonus + tenth trinket slot + fourth ally slot

List of star level bonuses by character

This section is incomplete. You can help out by expanding it. The editor who added this notice elaborates: Missing some characters

Captain Cassie

Level	Effect
2	Bomb attack cooldown reduces by 0.1 seconds (before Privateer), effectively increasing its attack speed by ~7.69%.
3	Unlocks Broadside.
4	Blast radius of bombs and Broadside bombs increases by 2 units. Has no effect after upgrading to Heavy Duty Ammo, which always sets the radius to 20 units.
5	Unlocks Bloon Pillage.
6	Range increases by 4 units.
7	Unlocks MOAB Takedown.
8	Bomb attack cooldown reduces by 0.2 seconds (before Privateer), effectively increasing its attack speed by ~18.2%.
9	Blast radius of bombs and Broadside bombs increases by 2 units. Has no effect after upgrading to Heavy Duty Ammo.
10	Adds two uses of the Pirate Crew that do not take up an ally slot.

Finn

Level	Effect
2	Sword attack cooldown reduces by 0.1 seconds (before Radder, Faster! and Raddest, Fastest!), effectively increasing its attack speed by ~11.1%.
3	Unlocks Flying Kick.
4	Sword attack pierce increases by 2.
5	Unlocks Finn of Fury.
6	Range increases by 5.
7	Unlocks Big Hearted Hero.
8	Sword attack pierce increases by 2.
9	Sword attack cooldown reduces by 0.1 seconds (before Radder, Faster! and Raddest, Fastest!), effectively increasing its attack speed by 12.5%.
10	Sword attack base damage increases by 1 and damage to MOAB-Class Bloons increases by 3 (stacks with Slicer and MOAB Ripper).

Flame Princess

Level	Effect
2	Range increases by 2 units. Does not affect Fire Sword, Flamethrower (unless upgraded to Heat Ray), or Elemental Transform's swiping attack. (This also applies to the bonuses at levels 4 and 8.)
3	Unlocks Heat Sense.
4	Range increases by 2 units.
5	Unlocks Heat Ray.
6	Fireball attack pierce increases by 2. Has no effect after upgrading to Bigger Blaze, which always sets the pierce to 8.
7	Unlocks Elemental Transform.
8	Range increases by 2 units.
9	Fireball attack cooldown reduces by 0.2 seconds, increasing its overall attack speed by ~36%.
10	Fireball attack now shoots two fireballs at a time instead of one, spread 45° apart from each other.

Ice King

Level	Effect
2	Freeze attack cooldown reduces by 0.1 seconds, effectively increasing its attack speed by ~4.35%.
3	Unlocks Hail Storm.
4	Freeze attack cooldown reduces by 0.1 seconds, effectively increasing its attack speed by ~4.54%.
5	Unlocks Monsters Of Snow.
6	Range increases by 2 units and freeze attack radius increases by 2 units.
7	Unlocks Big Freeze.
8	Freeze attack cooldown reduces by 0.1 seconds, effectively increasing its attack speed by ~4.76%.
9	Freeze attack cooldown reduces by 0.1 seconds, effectively increasing its attack speed by 5%.
10	Adds the normal damage type to all attacks and allows them to target White Bloons and Zebra Bloons (including the Snow Monsters).

Jake

Level	Description	Effect
2	Base Attack Speed +0.1	Reduces the cooldown of his base attack by 0.1 seconds, effectively increasing attack speed by ~0.111.
3	—	Unlocks Harmful If Swallowed.
4	Base Pierce +1	—
5	—	Unlocks Be Calmed By My Saliva.
6	Base Range +3	—
7	—	Unlocks Jake Suit.
8	Base Pierce +1	—
9	Base Attack Speed +0.1	Reduces the cooldown of his base attack by 0.1 seconds, effectively increasing attack speed by ~0.111.
10	Starts with Mace Hand and Axe Foot upgrades	—

Marceline

Level	Description
2	Swiping attack pierce increases by 2. Has no effect when transformed into a bat. Necromancy now spawns four skeletons instead of three.
3	Unlocks Eating Red. Necromancy now spawns five skeletons.
4	Amp range increases by 3 units.
5	Unlocks Improved Necromancy.
6	Swiping attack cooldown reduces by 0.2 seconds, effectively increasing its attack speed by ~25%. Applies before Ferocity's cooldown multiplier. Has no effect when transformed into a bat.
7	Unlocks Shape Shifting.
8	Swiping attack pierce increases by 2. Has no effect when transformed into a bat.
9	Amp range increases by 3 units.
10	The amp gains a soundwave area-of-effect attack that deals 1 normal-type damage, has 40 pierce, and fires every second. Its radius scales with the amp's range. It does not benefit from any equipment stat bonuses except range.

Max

Level	Description	Effect
2	Base Pierce +1	—
3	—	Unlocks Even More Darts.
4	Base Range +3	—
5	—	Unlocks Big Bloon Bounty.
6	Base Attack Speed +0.3	Reduces the cooldown of his base attack by 0.3 seconds, effectively increasing attack speed by ~0.333.
7	—	Unlocks Dartnado.
8	Base Pierce +1	—
9	Base Range +3	—
10	Base attack fires 2 darts	—

Princess Bubblegum

Level	Description	Effect
2	Base Attack Speed +0.1	Reduces the cooldown of her base attack by 0.1 seconds, effectively increasing attack speed by ~0.111.
3	—	Unlocks To Me.
4	Base Range +2	—
5	—	Unlocks Royal Decree.
6	Blast Radius +2	—
7	—	Unlocks Soda and Mints.
8	Base Attack Speed +0.1	Reduces the cooldown of her base attack by 0.1 seconds, effectively increasing attack speed by ~0.111.
9	Base Range +3	—
10	Corrosive Gum damages bloons over time	Bloons inflicted with bubblegum take 1 normal-type damage per second.

Supermonkey

Level	Description
2	Pierce increases by 1. Has no effect after upgrading to Laser Eyes, which always sets the pierce to 3.
3	Unlocks Heroic Aura.
4	Range increases by 3 units, including while transformed into the Sun God.
5	Unlocks Call in Friends.
6	Attack cooldown reduces by 0.01 seconds, effectively increasing his attack speed by ~1.11%. Has no effect after upgrading to Supersonic Speed, which always sets the cooldown to 0.07 seconds.
7	Unlocks Sun God.
8	Pierce increases by 2. Has no effect after upgrading to Laser Eyes.
9	Range increases by 4 units, including while transformed into the Sun God.
10	Starts with Heroic Aura for free when placed.

Warrior Bubblegum

Level	Effect
2	Increases the pierce of her sword attack by 2.
3	Unlocks Gumball Guards.
4	Increases the range of her sword attack and sub-tower spawning by 2 units.
5	Unlocks Candy Copters.
6	Reduces the cooldown of her sword attack by 0.2 seconds, effectively increasing its attack speed by ~18%. Has no effect after upgrading to Combat Experience, which always sets the cooldown to 0.9 seconds.
7	Unlocks Gumball Guardian.
8	Increases the range of her sword attack and sub-tower spawning by 3 units.
9	Increases the pierce of her sword attack by 2.
10	Starts with Candy Archers for free when placed.