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Easter season

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Easter is a seasonal event in Cookie Clicker. It was added on May 18, 2014, with the 1.0464 update.

Since the 1.0466 update, Easter starts automatically and lasts from 7 days before Easter (Palm Sunday) to Easter itself (Easter Sunday).

BunnyBiscuit

Bunny biscuit

Easter can also be activated by purchasing the Upgrade "Bunny biscuit", which will launch it for 24 hours.

The Bunny Biscuit Upgrade becomes available after unlocking the "Season switcher",

The upgrade is repeatable, but it gets more expensive each time it is bought. When activated, It cancels any other seasonal event.

This season is one of two seasons to have its own Grandma form, the Bunny Grandma. Bunny Grandma

The golden cookies appearance during the Easter season:Bunnies

UpgradesEdit

Here is a list of the 20 Upgrades that are from the Easter Season. All upgrades are egg/larvae based in theme and can be unlocked randomly when clicking a Golden Cookie, Wrath Cookie, or popping a wrinkler. The price of purchasing each egg goes up based on the number of eggs purchased so far ({PE} in the chart below).

Icon Name Unlocked at Price (cookies) Description ID #
Easter chicken egg Chicken egg "Common" eggs (see below). 999*2^{PE} Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"The egg. The egg came first. Get over it."
210
Easter duck egg Duck egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"Then he waddled away."
211
Easter turkey egg Turkey egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"These hatch into strange, hand-shaped creatures."
212
Easter quail egg Quail egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"These eggs are positively tiny. I mean look at them. How does this happen? Whose idea was that?"
213
Easter robin egg Robin egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"Holy azure-hued shelled embryos!"
214
Easter ostrich egg Ostrich egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"One of the largest eggs in the world. More like ostrouch, am I right? Guys?"
215
Cassowary egg Cassowary egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"The cassowary is taller than you, possesses murderous claws and can easily outrun you. You'd do well to be casso-wary of them."
216
Easter salmon roe Salmon roe Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"Do the impossible, see the invisible. Roe roe, fight the power?"
217
Frogspawn Frogspawn Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"I was going to make a pun about how these "toadally look like eyeballs", but froget it."
218
Easter shark egg Shark egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"HELLO IS THIS FOOD?
LET ME TELL YOU ABOUT FOOD.
WHY DO I KEEP EATING MY FRIENDS"
219
Turtle egg Turtle egg Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"Turtles, right? Hatch from shells. Grow into shells. What's up with that? Now for my skit about airplane food."
220
Ant larva Ant larva Cookie production global multiplier +1%.
Cost scales with how many eggs you own.
"These are a delicacy in some countries, I swear. You will let these invade your digestive tract, and you will derive great pleasure from it. And all will be well"
221
Egg3 Golden goose egg "Rare" eggs (see below). 999*3^{PE} Golden cookies appear 5% more often.
Cost scales with how many eggs you own.
"The sole vestige of a tragic tale involving misguided investments."
222
Easter faberge egg Faberge egg All buildings and upgrades are 1% cheaper.
Cost scales with how many eggs you own.
"This outrageous egg is definitely fab."
223
Egg6 Wrinklerspawn Wrinklers explode into 5% more cookies.
Cost scales with how many eggs you own.
"Look at this little guy! It's going to be a big boy someday! Yes it is!"
224
Egg5 Cookie egg Clicking is 10% more powerful.
Cost scales with how many eggs you own.
"The shell appears to be chipped
I wonder what's inside this one!"
225
Omelette egg Omelette Other eggs appear 10% more frequently.
Cost scales with how many eggs you own.
"Fromage not included."
226
Egg4 Chocolate egg Contains a lot of cookies.
Cost scales with how many eggs you own.
"Laid by the elusive cocoa bird. There's a surprise inside!"
227
Century egg Century egg You gain more CpS the longer you've played in the current session.
Cost scales with how many eggs you own.
"Actually not centuries-old. This one isn't a day over 86!"
228
Egg "egg" +9 CpS.
"hey, it's "egg""
229

Unlocking EggsEdit

Eggs are unlocked randomly during the easter season by either popping wrinklers or clicking Golden/Wrath Cookies. At base, a Golden/Wrath Cookie has a 10% chance to unlock an egg and a wrinkler has a 2% chance to unlock an egg. The "Santa's Bottomless Bag" and "Omelette egg" upgrades, as well as the Hide and Seek Champion achievement all increase the chance to unlock an egg.

You can cheat a bit with eggs (and other rare wrinkler's drops). The thing is - if you pop a wrinkler and reload the page without saving - the wrinkler is back. So you can save the game, pop your wrinklers and if they drop nothing - reload the page. Repeat till they drop something.

Egg Spawn ProbabilitiesEdit

Chances to find eggs
...and nothing else With either Santa's Bottomless Bag / Omelette Egg With both Santa's Bottomless Bag & Omelette Egg
Base Wrinkler 2%

GC 10%

Wrinkler 12%

GC 19%

Wrinkler 20%

GC 27%

With Hide and Seek Champion Wrinkler 31%

GC 37%

Wrinkler 38%

GC 43%

Wrinkler 44%

GC 49%

Egg Unlock ProbabilitiesEdit

When an egg is generated, there is a 10% chance for it to be a rare egg, otherwise it is a common egg.

If the generated egg has already been unlocked, then a second egg is generated. This reduces, but does not nullify, the effects of already having a number of eggs on your chances of finding new eggs. Having more eggs reduces the chance of you finding other eggs quadratically.

The probability of generating a new egg can be calculated using the following formulas:

pr(success) = 1 -0.005625 n^2-0.001875 n r-0.00015625 r^2

pr(normal) = 0.9 -0.0075 n-0.005625 n^2+0.01125 r-0.0009375 n r

pr(rare) = 0.1 +0.0075 n-0.01125 r-0.0009375 n r-0.00015625 r^2

pr(omelette) = 0.0125 +0.0009375 n+0.00015625 r

where n is the number of normal eggs already unlocked, and r is the number of rare eggs already unlocked. Pr(success) is the chance of unlocking a new egg, Pr(omelette) is the chance of unlocking the Omelette egg that will increase the spawn rate of eggs.

Probability of unlocking a new egg (when an egg is generated)
Number of rare eggs already unlocked
0 1 2 3 4 5 6 7 8
Number of normal eggs already unlocked 0 1. 0.999844 0.999375 0.998594 0.9975 0.996094 0.994375 0.992344 0.99
1 0.994375 0.992344 0.99 0.987344 0.984375 0.981094 0.9775 0.973594 0.969375
2 0.9775 0.973594 0.969375 0.964844 0.96 0.954844 0.949375 0.943594 0.9375
3 0.949375 0.943594 0.9375 0.931094 0.924375 0.917344 0.91 0.902344 0.894375
4 0.91 0.902344 0.894375 0.886094 0.8775 0.868594 0.859375 0.849844 0.84
5 0.859375 0.849844 0.84 0.829844 0.819375 0.808594 0.7975 0.786094 0.774375
6 0.7975 0.786094 0.774375 0.762344 0.75 0.737344 0.724375 0.711094 0.6975
7 0.724375 0.711094 0.6975 0.683594 0.669375 0.654844 0.64 0.624844 0.609375
8 0.64 0.624844 0.609375 0.593594 0.5775 0.561094 0.544375 0.527344 0.51
9 0.544375 0.527344 0.51 0.492344 0.474375 0.456094 0.4375 0.418594 0.399375
10 0.4375 0.418594 0.399375 0.379844 0.36 0.339844 0.319375 0.298594 0.2775
11 0.319375 0.298594 0.2775 0.256094 0.234375 0.212344 0.19 0.167344 0.144375
12 0.19 0.167344 0.144375 0.121094 0.0975 0.0735938 0.049375 0.0248438 N/A
Probability of unlocking a normal egg (when an egg is generated)
Number of rare eggs already unlocked
0 1 2 3 4 5 6 7 8
Number of normal eggs already unlocked 0 0.9 0.91125 0.9225 0.93375 0.945 0.95625 0.9675 0.97875 0.99
1 0.886875 0.897187 0.9075 0.917812 0.928125 0.938437 0.94875 0.959062 0.969375
2 0.8625 0.871875 0.88125 0.890625 0.9 0.909375 0.91875 0.928125 0.9375
3 0.826875 0.835313 0.84375 0.852188 0.860625 0.869063 0.8775 0.885938 0.894375
4 0.78 0.7875 0.795 0.8025 0.81 0.8175 0.825 0.8325 0.84
5 0.721875 0.728438 0.735 0.741563 0.748125 0.754688 0.76125 0.767813 0.774375
6 0.6525 0.658125 0.66375 0.669375 0.675 0.680625 0.68625 0.691875 0.6975
7 0.571875 0.576563 0.58125 0.585938 0.590625 0.595313 0.6 0.604688 0.609375
8 0.48 0.48375 0.4875 0.49125 0.495 0.49875 0.5025 0.50625 0.51
9 0.376875 0.379688 0.3825 0.385313 0.388125 0.390938 0.39375 0.396563 0.399375
10 0.2625 0.264375 0.26625 0.268125 0.27 0.271875 0.27375 0.275625 0.2775
11 0.136875 0.137812 0.13875 0.139688 0.140625 0.141562 0.1425 0.143438 0.144375
Probability of unlocking a rare egg (when an egg is generated)
Number of rare eggs already unlocked
0 1 2 3 4 5 6 7
Number of normal eggs already unlocked 0 0.1 0.0885938 0.076875 0.0648438 0.0525 0.0398438 0.026875 0.0135938
1 0.1075 0.0951563 0.0825 0.0695313 0.05625 0.0426563 0.02875 0.0145313
2 0.115 0.101719 0.088125 0.0742188 0.06 0.0454688 0.030625 0.0154688
3 0.1225 0.108281 0.09375 0.0789063 0.06375 0.0482813 0.0325 0.0164063
4 0.13 0.114844 0.099375 0.0835938 0.0675 0.0510938 0.034375 0.0173438
5 0.1375 0.121406 0.105 0.0882813 0.07125 0.0539063 0.03625 0.0182813
6 0.145 0.127969 0.110625 0.0929688 0.075 0.0567188 0.038125 0.0192188
7 0.1525 0.134531 0.11625 0.0976563 0.07875 0.0595313 0.04 0.0201563
8 0.16 0.141094 0.121875 0.102344 0.0825 0.0623438 0.041875 0.0210938
9 0.1675 0.147656 0.1275 0.107031 0.08625 0.0651563 0.04375 0.0220313
10 0.175 0.154219 0.133125 0.111719 0.09 0.0679688 0.045625 0.0229688
11 0.1825 0.160781 0.13875 0.116406 0.09375 0.0707813 0.0475 0.0239063
12 0.19 0.167344 0.144375 0.121094 0.0975 0.0735938 0.049375 0.0248438
Probability of unlocking the omelette egg (when an egg is generated)
Number of rare eggs already unlocked
0 1 2 3 4 5 6 7
Number of normal eggs already unlocked 0 0.0125 0.0126563 0.0128125 0.0129688 0.013125 0.0132813 0.0134375 0.0135938
1 0.0134375 0.0135938 0.01375 0.0139063 0.0140625 0.0142188 0.014375 0.0145313
2 0.014375 0.0145313 0.0146875 0.0148438 0.015 0.0151563 0.0153125 0.0154688
3 0.0153125 0.0154688 0.015625 0.0157813 0.0159375 0.0160938 0.01625 0.0164063
4 0.01625 0.0164063 0.0165625 0.0167188 0.016875 0.0170313 0.0171875 0.0173438
5 0.0171875 0.0173438 0.0175 0.0176563 0.0178125 0.0179688 0.018125 0.0182813
6 0.018125 0.0182813 0.0184375 0.0185938 0.01875 0.0189063 0.0190625 0.0192188
7 0.0190625 0.0192188 0.019375 0.0195313 0.0196875 0.0198438 0.02 0.0201563
8 0.02 0.0201563 0.0203125 0.0204688 0.020625 0.0207813 0.0209375 0.0210938
9 0.0209375 0.0210938 0.02125 0.0214063 0.0215625 0.0217188 0.021875 0.0220313
10 0.021875 0.0220313 0.0221875 0.0223438 0.0225 0.0226563 0.0228125 0.0229688
11 0.0228125 0.0229688 0.023125 0.0232813 0.0234375 0.0235938 0.02375 0.0239063
12 0.02375 0.0239063 0.0240625 0.0242188 0.024375 0.0245313 0.0246875 0.0248438

Average Unlock TimeEdit

If we unlock easter eggs using only Golden Cookies, the average number of Golden Cookie clicks required to unlock all easter eggs can be simulated. The simulation includes the effects of unlocking the Omelette egg (whenever it spawns naturally).

Number of Golden Cookie clicks to unlock all Easter Eggs
Condition Average n(GC) 68% (1σ) n(GC)  95% (2σ) n(GC) 99.7% (3σ) n(GC) Log-normal distribution
Base 749.2 ± 1 488~1150 318~1763 207~2705 μ=6.619, σ=0.428
Santa's Bottomless Bag 456.7 ± 0.6 302~689 200~1040 133~1570 μ=6.124, σ=0.412
Hide & Seek Champion 261.6 ± 0.4 174~391 115~583 77~871 μ=5.567, σ=0.410
Santa's Bottomless Bag + Hide & Seek Champion 227.6 ± 0.4 151~343 100~516 67~777 μ=5.427, σ=0.410

Similarly, if we unlock easter eggs using only Wrinklers:

Number of Wrinklers popped to unlock all Easter Eggs
Condition Average n(W) 68% (1σ) n(W)  95% (2σ) n(W) 99.7% (3σ) n(W) Log-normal distribution
Base 2385 ± 5 1309~4346 718~7918 394~14428 μ=7.78, σ=0.600
Santa's Bottomless Bag 663 ± 1 434~1010 285~1541 187~2350 μ=6.496, σ=0.422
Hide & Seek Champion 302.1 ± 0.4 200~455 133~685 88~1031 μ=5.710, σ=0.410
Santa's Bottomless Bag + Hide & Seek Champion 254.5 ± 0.4 169~382 113~574 75~862 μ=5.539, σ=0.407

Cookie Production Global MultiplierEdit

The cookie production global multiplier that many of the eggs modify is essentially another form of cookie multiplier, but it applies separately in the process, meaning small numbers still have a big impact (far larger than +1% cookie multiplier would).


The final CpS formula is essentially: CpS * Cookie Multiplier (cookie types, Heavenly Chips, frenzy/elder frenzy bonus/clot penalties, etc) * Global Multiplier


For example, if you have some cookie types and kitten bonuses totaling a 1000% cookie multiplier, and a base CpS of 10,000, giving you a total income of 100,000 cookies per second, and you unlocked two common eggs, your new total CpS would be 102,000 (10,000 * 10 * 1.02). If you then unlocked another kitten upgrade increasing your base cookie multiplier to 1500%, your income would increase to 153,000 (10,000 * 15 * 1.02)

AchievementsEdit

List of known Achievements that will be earned eventually from the Easter season.

Icon Name Description ID #
Huntison The hunt is on Unlock 1 egg. 166
Easter quail egg Egging on Unlock 7 Eggs. 167
Egg2 Mass Easteria Unlock 14 Eggs. 168
Egg3 Hide and seek champion Unlock all the eggs. (20) 169

Note: The eggs only need to be 'found' for the achievements to be earned, they do not need to be purchased. While this may not matter since most eggs will end up being purchased, it is handy to know that situationally functional eggs like the Chocolate Egg, Century Egg and "egg" do not have to be purchased for the achievement.

Trivia Edit

  • The description of the upgrade "Duck Egg" is a reference to a popular YouTube video, "The Duck Song."
  • The omelette's flavor text is a reference to the "omelette du fromage" episode of Dexter's Laboratory.
  • The salmon roe flavor text is a reference to a song in the anime Tengen Toppa Gurren Lagann.
  • The Century egg is an ingredient in Chinese cuisine .
  • The Shark egg's description is from the thoughts of sharks in one of Orteil's other games, Nested. It is possibly also a reference to the sharks from the Pixar film "Finding Nemo".
  • The Bunny Grandma bears a striking resemblance to Frank, a character from the 2001 film 'Donnie Darko'.
  • The robin egg's flavor text is a reference to the catchphrase of Robin from the 1960's Batman TV Series.
  • The Golden Goose Egg's flavor text is a reference to Jack and the Bean Stalk, as well as a related idiom: "killing the goose that laid the golden eggs ."
  • The Bunny biscuit text is a reference to one of the rabbit myths told in Watership Down.
  • The "egg" bears a strong resemblance to Yoshi's eggs from Super Mario World and a normal pokemon egg from the game series "Pokémon". This pattern is also similar to a default spawn egg from Minecraft .
  • Orteil said that "egg" is neither a pun nor a reference. However, in French, "an egg" is pronounced "un œuf" which sounds exactly like "neuf" = 9.
Cookie Clicker game mechanics
Cookies ClickingBuildings
General AchievementsCpSMilkGolden CookiesNews TickerOptionsCheating
Upgrades Upgrades overview
Multipliers: Flavored CookiesKittens
Research: GrandmapocalypseWrath CookiesWrinklersShiny Wrinklers
Ascension AscensionHeavenly ChipsChallenge Mode
Seasons Seasons overview
Valentine's DayBusiness DayEasterHalloweenChristmas
Further reading Category:Gameplay

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