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 (Resurrection Sunday).
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.
The golden cookies appearance during the Easter season:
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 (E in the chart below).
Icon | Name | Unlocked at | Price (cookies) | Description | ID |
---|---|---|---|---|---|
Chicken egg | "Common" eggs (see Probabilities). | 999 × 2^{E} | Cookie production multiplier +1%. Cost scales with how many eggs you own. "The egg. The egg came first. Get over it." | 210 | |
Duck egg | Cookie production multiplier +1%. Cost scales with how many eggs you own. "Then he waddled away." | 211 | |||
Turkey egg | Cookie production multiplier +1%. Cost scales with how many eggs you own. "These hatch into strange, hand-shaped creatures." | 212 | |||
Quail egg | Cookie production 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 | |||
Robin egg | Cookie production multiplier +1%. Cost scales with how many eggs you own. "Holy azure-hued shelled embryos!" | 214 | |||
Ostrich egg | Cookie production 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 | Cookie production 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 | |||
Salmon roe | Cookie production multiplier +1%. Cost scales with how many eggs you own. "Do the impossible, see the invisible. Roe roe, fight the power?" | 217 | |||
Frogspawn | Cookie production 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 | |||
Shark egg | Cookie production 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 | Cookie production 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 | Cookie production 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 | |||
Golden goose egg | "Rare" eggs (see Probabilities). | 999 × 3^{E} | 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 | |
Faberge egg | All buildings and upgrades are 1% cheaper. ^{[note 1]} Cost scales with how many eggs you own. "This outrageous egg is definitely fab." | 223 | |||
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 | |||
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 | Other eggs appear 10% more frequently. Cost scales with how many eggs you own. "Fromage not included." | 226 | |||
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 | You continually 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" | +9 CpS "hey, it's "egg"" | 229 |
- ↑ Upgrades which lower the cost of upgrades stack multiplicatively, not additively. That is, if you have 3 of them which reduce the cost of upgrades by 5%, 2% and 1% then the final cost of an upgrade is (original cost) * 0.95 * 0.98 * 0.99.
Unlocking EggsEdit
Eggs are unlocked randomly during the Easter season by either popping wrinklers or clicking Golden/Wrath Cookies. The base fail rate to unlock an egg from a Golden/Wrath Cookie is 90% (0.9), while the base fail rate for a wrinkler is 98% (0.98). There are many factors that can reduce the fail rate.
factor | |
---|---|
Hide & seek champion | 0.7 |
Omelette | 0.9 |
Starspawn | 0.9 |
Selebrak, Spirit of Festivities | 0.9/0.95/0.97 (Diamond/Ruby/Jade) |
Santa's Bottomless Bag | 1/1.1=0.909091 |
Mind Over Matter | 1/1.25=0.8 |
Green yeast digestives | 1/1.03=0.970874 |
Garden plants (mature, dirt) | 1/(1+0.01G+0.01S+0.03K) G = # of Green Rot S = # of Shimmerlily K = # of Keenmoss |
For example, if you pop a Golden cookie and you have Omelette, Starspawn, Santa's Bottomless Bag and Mind Over Matter, the fail rate is
$ f=0.9*0.9/1.25/1.1\approx 0.589091 $
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 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 probabilities of generating a new egg, a common egg, any rare egg, or a specific rare egg (e.g. omelette) can be calculated using the following formulas, where n is the number of normal eggs already unlocked, and r is the number of rare eggs already unlocked:
- Pr(new egg)=$ 1-(\frac{6n+r}{80})^2 $=$ 1-\frac{9n^2}{1600}-\frac{3nr}{1600}-\frac{r^2}{6400} $=$ 1 -0.005625 n^2-0.001875 n r-0.00015625 r^2 $
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 | 0 |
- Pr(common)$ =\frac{72-6n}{80}(1+\frac{6n+r}{80}) $$ =\frac{9}{10}-\frac{3n}{400}-\frac{9n^2}{1600}+\frac{9r}{800}-\frac{3nr}{3200} $$ =0.9 -0.0075 n-0.005625 n^2+0.01125 r-0.0009375 n r $
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 |
- Pr(any rare)=$ \frac{8-r}{80}(1+\frac{6n+r}{80}) $=$ \frac{1}{10}+\frac{3n}{400}-\frac{9r}{800}-\frac{3nr}{3200}-\frac{r^2}{6400} $=$ 0.1 +0.0075 n-0.01125 r-0.0009375 n r-0.00015625 r^2 $
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 |
- Pr(given rare)=$ \frac{1}{80}(1+\frac{6n+r}{80}) $=$ 0.0125 +0.0009375 n+0.00015625 r $
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 calculated. The calculation includes the effects of unlocking the Omelette egg (whenever it spawns naturally). Therefore, please ignore omelette factor when calculate the fail rate in this section.
The result curve is very similar to Log-normal distribution. For each fail rate we may fit the probability curve to Log-normal distribution to find the parameter μ and σ. Then we can use the formula on Wikipedia to obtain the probability we want.
For example, at fail rate 0.9, if you clicked or popped 753 objects, then there is 50% change to collect all Easter eggs.
fail rate | 50% | 75% | 95% | 98% | Log-normal distribution | |
---|---|---|---|---|---|---|
μ | σ | |||||
0.98 | 2351 | 3524 | 6310 | 8066 | 7.7625 | 0.6003 |
0.97 | 1755 | 2515 | 4218 | 5245 | 7.4704 | 0.5330 |
0.96 | 1437 | 2005 | 3241 | 3967 | 7.2700 | 0.4946 |
0.95 | 1231 | 1691 | 2670 | 3236 | 7.1157 | 0.4706 |
0.94 | 1085 | 1474 | 2291 | 2759 | 6.9890 | 0.4546 |
0.93 | 973 | 1313 | 2019 | 2420 | 6.8808 | 0.4435 |
0.92 | 885 | 1188 | 1812 | 2166 | 6.7858 | 0.4356 |
0.91 | 813 | 1087 | 1649 | 1966 | 6.7009 | 0.4298 |
0.9 | 753 | 1003 | 1516 | 1804 | 6.6240 | 0.4254 |
0.875 | 637 | 845 | 1269 | 1506 | 6.4575 | 0.4185 |
0.85 | 554 | 733 | 1096 | 1299 | 6.3176 | 0.4148 |
0.825 | 491 | 649 | 968 | 1146 | 6.1965 | 0.4128 |
0.8 | 441 | 582 | 868 | 1027 | 6.0895 | 0.4116 |
0.75 | 367 | 485 | 722 | 854 | 5.9062 | 0.4108 |
0.7 | 315 | 416 | 619 | 732 | 5.7526 | 0.4106 |
0.6 | 246 | 324 | 483 | 571 | 5.5034 | 0.4110 |
0.5 | 201 | 266 | 396 | 469 | 5.3050 | 0.4113 |
0.3 | 148 | 196 | 291 | 345 | 4.9982 | 0.4112 |
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(usually to smaller effect 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 can be earned during the Easter season.
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.
TriviaEdit
- 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 1960s Batman TV Series.
- The Golden Goose Egg's flavor text is a reference to Jack and the Beanstalk, 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 Pokémon egg from the game series "Pokémon". It may also be a reference to the glitch pokemon "Egg". This pattern is also similar to a default spawn egg from Minecraft.
- Orteil said that the flavor text for "egg" is neither a pun nor a reference. However, in French, "an egg" is pronounced "un œuf" which sounds exactly like "neuf" = 9.
- Mass Easteria is a reference to the French band Mass Hysteria.
- Golden/Wrath cookies from a Cookie Storm still can unlock eggs.
Cookie Clicker game mechanics | |
---|---|
Cookies | Clicking • Buildings |
General | Achievements • CpS • Milk • Golden Cookies • News Ticker • Options • Cheating |
Upgrades | Upgrades overview Multipliers: Flavored Cookies • Kittens Research: Grandmapocalypse • Wrath Cookies • Wrinklers • Shiny Wrinklers |
Ascension | Ascension • Heavenly Chips • Challenge Mode |
Seasons | Seasons overview Valentine's Day • Business Day • Easter • Halloween • Christmas |
Minigames | Minigames overview Garden • Pantheon • Grimoire |
Further reading | Gameplay |