Cookie Clicker Wiki

Krumblor as it appears during a Dragonflight or Dragon Harvest.

Krumblor the cookie dragon is a widget that was added in v1.9 of Cookie Clicker. By sacrificing cookies and buildings to Krumblor, the player will unlock selectable auras which provide various benefits in the game. An aura can be selected by clicking on the dragon. Switching auras costs one of the highest tier building owned.

To unlock Krumblor, the player must purchase the Heavenly Upgrade 'How to bake your dragon', which in turn unlocks the upgrade 'A crumbly egg' in all subsequent playthroughs.


Icon Name Unlock condition Base price Description ID
How to bake your dragon.png How to bake your dragon
(heavenly upgrade)
"Legacy" purchased MoneyHC.png 9 Allows you to purchase a crumbly egg once you have earned 1 million cookies.
"A tome full of helpful tips such as 'oh god, stay away from it', 'why did we buy this thing, it's not even house-broken' and 'groom twice a week in the direction of the scales'."
Pet the dragon.png Pet the dragon
(heavenly upgrade)
"How to bake your dragon" and "Residual luck" purchased MoneyHC.png 100 billion Unlocks the ability to pet your dragon by clicking on it once hatched.
"Dragons do not purr. If your dragon starts purring, vacate the area immediately."
Dragon egg.png A crumbly egg 1 million cookies earned and "How to bake your dragon" purchased Money.png 25 Unlocks the cookie dragon egg.
"Thank you for adopting this robust, fun-loving cookie dragon! It will bring you years of joy and entertainment.
Keep in a dry and cool place, and away from other house pets. Subscription to home insurance is strongly advised."
Dragon scale.png Dragon scale Random drop from petting Krumblor Money.png 1,800 x CpS
(x0.1 if max level dragon)
Cookie production multiplier +3%.
Cost scales with CpS, but 10 times cheaper with a fully-trained dragon.
"Your dragon sheds these regularly, so this one probably won't be missed.
Note: icon not to scale."
Dragon claw.png Dragon claw Random drop from petting Krumblor Money.png 1,800 x CpS
(x0.1 if max level dragon)
Clicks are +3% more powerful.
Cost scales with CpS, but 10 times cheaper with a fully-trained dragon.
"Will grow back in a few days' time.
A six-inch retractable claw, like a razor, from the middle toe. So you know, try to show a little respect."
Dragon fang.png Dragon fang Random drop from petting Krumblor Money.png 1,800 x CpS
(x0.1 if max level dragon)
+3% golden cookie gains.
Dragon harvest and Dragonflight are 10% stronger.
Cost scales with CpS, but 10 times cheaper with a fully-trained dragon.
"Just a fallen baby tooth your dragon wanted you to have, as a gift.
It might be smaller than an adult tooth, but it's still frighteningly sharp - and displays some awe-inspiring cavities, which you might expect from a creature made out of sweets."
Dragon teddy bear.png Dragon teddy bear Random drop from petting Krumblor Money.png 1,800 x CpS
(x0.1 if max level dragon)
+3% random drops.
Cost scales with CpS, but 10 times cheaper with a fully-trained dragon.
"Your dragon used to sleep with this. Now it's time for you to have it.
Crafted in the likelihood of a fearsome beast. Stuffed with magical herbs picked long ago by a wandering wizard. Woven from elven yarn and a polyester blend."
Dragon cookie.png Dragon cookie "Bake dragon cookie" dragon training completed Money.png 70 quadrillion Cookie production multiplier +5%.
"Imbued with the vigor and vitality of a full-grown cookie dragon, this mystical cookie will embolden your empire for the generations to come."

Dragon Stages

Appearance Title Available action/description Sacrifice
Dragon egg Chip it 1 million cookies
2 million cookies
4 million cookies
Shivering dragon egg Hatch it 8 million cookies
Krumblor, cookie hatchling Train Breath of Milk
Aura: kittens are 5% more effective
16 million cookies
Train Dragon Cursor
Aura: clicking is 5% more effective
100 Cursors
Train Elder Battalion
Aura: grandmas gain +1% CpS for every non-grandma building
100 Grandmas[note 1]
Train Reaper of Fields
Aura: golden cookies may trigger a Dragon Harvest
100 Farms
Krumblor, cookie dragon Train Earth Shatterer
Aura: buildings sell back for 50% instead of 25%
100 Mines
Train Master of the Armory
Aura: all upgrades are 2% cheaper
100 Factories
Train Fierce Hoarder
Aura: all buildings are 2% cheaper
100 Banks
Train Dragon God
Aura: prestige CpS bonus +5%
100 Temples
Train Arcane Aura
Aura: golden cookies appear 5% more often
100 Wizard towers
Train Dragonflight
Aura: golden cookies may trigger a Dragonflight
100 Shipments
Train Ancestral Metamorphosis
Aura: golden cookies give 10% more cookies
100 Alchemy labs
Train Unholy Dominion
Aura: wrath cookies give 10% more cookies
100 Portals
Train Epoch Manipulator
Aura: golden cookie effects last 5% longer
100 Time machines
Train Mind Over Matter
Aura: +25% random drops
100 Antimatter condensers
Train Radiant Appetite
Aura: all cookie production multiplied by 2
100 Prisms
Train Dragon's Fortune
Aura: +123% CpS per golden cookie on-screen
100 Chancemakers
Train Dragon's Curve
Aura: sugar lumps grow 5% faster, 50% weirder
100 Fractal engines
Train Reality Bending
Aura: 10% of every other aura, combined
100 Javascript consoles
Train Dragon Orbs
Aura: selling your best building may grant a wish
100 Idleverses
Train Supreme Intellect
Aura: confers various powers to your minigames
100 Cortex bakers
Bake dragon cookie
50 of every building
Train secondary aura
Lets you have two dragon auras simultaneously
200 of every building
Your dragon is fully trained


Icon Aura Name Description Aura Effect
Breath of Milk.png
Breath of Milk Kittens are 5% more effective. Milk Effect: 1.05x
With Reality Bending: 1.055x
Dragon Cursor.png
Dragon Cursor Clicking is 5% more effective. Clicking Effect: 1.05x
With Reality Bending: 1.055x
Elder Battalion.png
Elder Battalion Grandmas gain +1% CpS for every non-grandma building. Grandma Multiplier:

With Reality Bending:
Reaper of Fields.png
Reaper of Fields Golden cookies may trigger a Dragon Harvest. Golden Cookie Effect Pool:
19.25% chance of pooling
(5% if grandmapocalypse)
With Reality Bending: 19.25%
(5% if grandmapocalypse)
[note 2]
Earth Shatterer.png
Earth Shatterer Buildings sell back for 50% instead of 25%. Sellback Rate: 50%
With Reality Bending: 52.5%
Master of the Armory.png
Master of the Armory All upgrades are 2% cheaper. Upgrade Discount: 0.98x
With Reality Bending: 0.978x
Fierce Hoarder.png
Fierce Hoarder All buildings are 2% cheaper. Building Discount: 0.98x
With Reality Bending: 0.978x
Dragon God.png
Dragon God Prestige CpS bonus +5%. Prestige Bonus: 1.05x
With Reality Bending: 1.055x
Arcane Aura.png
Arcane Aura Golden cookies appear +5% more often. Golden Spawn: 1.05x
With Reality Bending: 1.055x
Dragonflight Golden cookies may trigger a Dragonflight. Golden Cookie Effect Pool:
19.25% chance of pooling
(5% if grandmapocalypse)
With Reality Bending: 19.25%
(5% if grandmapocalypse)
[note 2]
Ancestral Metamorphosis.png
Ancestral Metamorphosis Golden cookies give 10% more cookies. Golden Gain: 1.1x
With Reality Bending: 1.11x
Unholy Dominion.png
Unholy Dominion Wrath cookies give 10% more cookies. Wrath Gain: 1.1x
With Reality Bending: 1.11x
Epoch Manipulator.png
Epoch Manipulator Golden cookies last 5% longer. Golden Time: 1.05x
With Reality Bending: 1.055x
Mind Over Matter.png
Mind Over Matter Random drops are 25% more common.[note 3] Random Drops: 1.25x
With Reality Bending: 1.275x
Radiant Appetite.png
Radiant Appetite All cookie production multiplied by 2. Cookie Production: 2x
With Reality Bending: 2.1x
Dragon's Fortune.png
Dragon's Fortune +123% CpS per golden cookie on-screen, multiplicative.[note 4] Golden CpS Bonus: 2.23x
With Reality Bending: 2.353x
Dragon's Curve.png
Dragon's Curve +5% sugar lump growth and sugar lumps are twice as likely to be unusual. Sugar Lump Effects:
  • Aging Multiplier: 1.05x
    With Reality Bending: 1.055x
  • Type Selection: 1 reroll
    With Reality Bending: 1 reroll,
    10% chance of 2nd reroll
Reality Bending.png
Reality Bending One tenth of every other dragon aura, combined. Base effects. See other auras for combined effects when equipped alongside Reality Bending.
  • Milk Effect: 1.005x
  • Clicking Effect: 1.005x
  • Grandma Multiplier:
  • Dragon Harvest pooling:
    1.925% (or 0.5%) chance
  • Sellback Rate: 27.5%
  • Upgrade Discount: 0.998x
  • Building Discount: 0.998x
  • Prestige Bonus: 1.005x
  • Golden Spawn: 1.005x
  • Dragonflight pooling:
    1.925% (or 0.5%) chance
  • Golden Gain: 1.01x
  • Wrath Gain: 1.01x
  • Golden Time: 1.005x
  • Random Drops: 1.025x
  • Cookie Production: 1.1x
  • Golden CpS Bonus: 1.123x
  • Sugar Lump Effects:
    1.005x Aging Multiplier,
    10% chance of 1 reroll
  • Wish Chance: 1%
  • Minigame Powers Garden: 0.5% faster. Stock Market: Slightly chaotic. Pantheon: No effect. Grimoire: 1% difference.
Dragon Orbs.png
Dragon Orbs With no buffs and no golden cookies on screen, selling your most powerful building has 10% chance to summon one. Wish Chance: 10%
With Reality Bending: 11%
Supreme Intellect.png
Supreme Intellect Confers various powers to your minigames while active. [note 5]

Garden: Garden plants age and mutate 5% faster.

With Reality Bending: 5.5% faster.

Stock Market: The stock market is more chaotic.

With Reality Bending: More chaotic.

Pantheon: The jade slot behaves as a ruby slot and the ruby slot behaves as a diamond slot.

With Reality Bending: Base effect.

Grimoire: Grimoire spells are 10% cheaper but fail 10% more.

With Reality Bending: 11% difference.

Petting the Dragon

After the player purchases Pet the dragon, it is possible to pet the dragon (clicking on the dragon's picture); this will trigger heart particles. If the dragon has been leveled up beyond level 8 (after sacrificing 100 farms), every time it is petted there is a 5% chance to drop an upgrade.

The choice of dropped upgrade goes as follows: first, the game shuffles the list of available drops (Dragon scale, Dragon claw, Dragon fang, Dragon teddy bear) based on the game seed. Then, if the minute of the current time is between 0 and 14, the first upgrade of the shuffle is available for dropping (so if the 5% test passes, it is that upgrade that is dropped). If the minute is between 15 and 29, the second upgrade may be dropped, and so on.

Since the shuffle is based only on the game seed, to get all four drops, it is necessary to pet the dragon every quarter of an hour.

Note that the 5% is not affected by upgrades and effects that change random drop rates (like Cosmic Beginner's Luck and Keenmoss).


If a player is going for the overall highest CPS boosts with auras, a combination of Breath of Milk and Radiant Appetite will produce the largest CPS increase. If a player is going for harvesting as many sugar lumps as possible, they should use a combination of Dragon's Curve and Reality Bending, as it reduces the maturation time and increases unusual lump rate the most.


This image shows the multiplier for the Breath of Milk dragon aura, based on the milk percentage and which kitten upgrades are active (up to kitten experts). In each group of 4 lines, grouped by color, the bottom line is the base multiplier, the next line is the multiplier with Santa's milk and cookies, the next line is the multiplier with Kitten angels, and the top line is the multiplier with both. The lines for each kitten upgrade assume that all previous kitten upgrades are active as well.

The overall effect of Dragon Cursor depends on how much the player clicks the Big Cookie, but as a rough estimate, with all upgrades, they will make approximately 1% more cookies at 2 clicks per second, 2% at 4 clicks per second, 3% at 10 clicks per second, 4% at 25 clicks per second, 4.5% at 55 clicks per second, and 4.9% at 300 clicks per second.

With optimal building distribution, Elder Battalion will give an overall production increase of about 1%. It can increase total production in the early game by a 5 fold after the Grandmapocalypse. This will become less significant the further the player progresses in the game. It can, however, be used to obtain the achievements "Gushing grannies" (bake 10 quintillion cookies with grandmas), "Panic at the bingo" (bake 100 septillion cookies with grandmas), and "Frantiquilities" (bake 1 decillion cookies with grandmas) quicker, due to having a larger general CpS buff to grandma CpS than Radiant Appetite, Dragon's Fortune, and Dragon Harvest.

The overall effect of Reaper of Fields has not yet been calculated.


Earth Shatterer should be used before selling all buildings, using the Chocolate egg, and ascending.

The overall effect of Dragon God scales up to 5% with Prestige, as shown in this image on a log scale.

The overall effect of Arcane Aura has not yet been calculated. A rough estimate is about 5% for active play.

A rough estimate of Dragonflight is a 150% increase in click-based production, which translates roughly to a 20% increase at 1 click per second, 35% at 2 clicks per second, 50% at 3 clicks per second, 60% at 4 clicks per second, 80% at 7 clicks per second, 100% at 13 clicks per second, and 120% at 25 clicks per second.

Ancestral Metamorphosis and Unholy Dominion only affect Lucky and Chain cookies, which means their effects reduce fairly quickly with an active playstyle. The benefit of Ancestral Metamorphosis drops from about 8% with an idle playstyle, to 5% at 4 clicks per second, to 3% at 10 clicks per second, to 2% at 20 clicks per second, to 1% at 45 clicks per second.

The overall effect of Epoch Manipulator has not yet been calculated. A rough estimate is about 5%.

Radiant Appetite has a flat 100% bonus to all production. It easily produces the largest boost in production out of all the auras.

Dragon's Fortune can grant a multiplier of over 2 with one golden cookie on the screen. This can be coupled well with Force The Hand Of Fate. It is however risky to have this, due to golden cookies not being truly "permanent", in fact the bonuses can last not more than two or three times a Dragonflight, giving much less of a multiplier. It is still possible to force many golden cookies, find a Dragonflight cookie, and have a Dragonflight twice or even thrice as powerful as a regular one.

Dragon's Curve only affects sugar lumps, but they can be used to buy various improvements. See sugar lump strategy.

Reality Bending has many effects, and may depend on the 2nd aura. The overall effects have not yet been calculated.

Dragon Orbs can manually start a combo at any time.

Supreme Intellect can increase the yield from minigames but also increases the risk and penalties.


Icon Name Description ID
Dragon egg.png Here be dragon Complete your dragon's training. 222


  1. Sacrificing grandmas fulfills the unlock condition of the "Just Wrong" achievement.
  2. 2.0 2.1 Having the aura Reality Bending active alongside this aura doesn't improve the chances of the golden cookie outcome.
  3. This affects garden upgrade drops, eggs during easter, and flavored seasonal cookies from Halloween and Christmas.
  4. This does not include the golden cookies created by a cookie storm.
  5. The minigame information can be accessed via a dragon head icon (Pet the dragon.png) under each minigame. Reality Bending does not display information boxes when selected alone, but it does provide a boost as long as Supreme Intellect is unlocked. If both auras are selected, the values in the information boxes change accordingly.


  • Krumblor will always appear below Santa.
  • Krumblor makes a cameo appearance in AdventureQuest Dragons, another game made by Orteil in conjunction with Artix Entertainment.
  • If the player has no buildings, there is no cost for switching auras.


  • The upgrade "How to bake your dragon" is a reference to the book (and subsequent movie) "How to Train your Dragon" by Cressida Cowell.
  • The aura "Dragon's Curve" is a reference to the family of fractals of the same name.
  • The aura "Dragon Orbs" is a reference to the Dragon Ball series of anime and manga.
    • The reference was likely made due to the resemblance of the Idleverse's icon to the titular "Dragon Balls" of the Japanese franchise.
    • This relation likely also served as inspiration for the aura's effect, as one who collects the Dragon Balls is then granted a wish by a dragon.
  • The achievement "Here be dragon" is a reference to the phrase here be dragons.
  • The "Dragon Claw" random drop's description is a reference to "Jurassic Park", in which paleontologist Alan Grant describes a Velociraptor claw to a child.
Interactive Objects
Big Cookie
Golden Cookie
Wrath Cookie
Wrinkler - 1.png
Shiny wrinkler
Category:Interactive Objects