Reindeer

Reindeer are interactable objects in Cookie Clicker that are exclusive to the Christmas season. Reindeer can occasionally spawn on the left side of the screen, where they will then jump across the screen (from left to right) and vanish upon reaching the right side of the screen. When clicked, they disappear and give a certain amount of cookies proportional to your cookie production. Reindeer are classified as Shimmers.

Reward

Each Reindeer initially gives a minute worth of Unwithered CPS initially or 25 cookies, whichever is higher. With the "Ho ho ho-flavored frosting" upgrade, each Reindeer yields twice as many cookies, or two minutes worth of CPS. The amount dropped is affected by buffs. Note that Reindeer rewards are not limited by your current cookies in the bank. Clicking a reindeer with the buff Elder Frenzy active halves the cookie gain and clicking a reindeer with the buff Frenzy active multiplies the gain by 0.75.

Popping a Reindeer during Frenzy + Elder Frenzy yields a reasonable anount of cookies.

Eldeer

This achievement is obtained by clicking a reindeer during an Elder Frenzy. In order to get this achievement, it is recommended to leave a natural Wrath Cookie on screen, then click the Wrath Cookie when a reindeer appears and then click the reindeer. This can be repeated until the Wrath Cookie gives Elder Frenzy. It is also possible to keep a reindeer onscreen until a wrath cookie appears.

For more advanced players, the same may be done except using Dragon Orbs to summon a golden cookie before a natural Wrath Cookie or Reindeer spawns, and keep using Dragon Orbs while the reindeer is onscreen for even more opportunities.

Spawn rates

The Reindeer follows Spawning mechanism, and can be approximated by following functions:

${\bar {p}}(t)={\begin{cases}0&T_{\text{min}}>t\\p(t-T_{\text{min}})&T_{\text{max}}>t\geq T_{\text{min}}\\0&t\geq T_{\text{max}}\\\end{cases}}$ ${\bar {P}}(t)={\begin{cases}0&T_{\text{min}}>t\\P(t-T_{\text{min}})&T_{\text{max}}>t\geq T_{\text{min}}\\1&t\geq T_{\text{max}}\\\end{cases}}$ ${\bar {P}}^{-1}(c)={\begin{cases}\left({\frac {-T^{5}}{5}}\ln(1-c)\right)^{\frac {1}{6}}+T_{\text{min}}&1-\exp(-5T)\geq c>0\\T_{\text{max}}&c>1-\exp(-5T)\\\end{cases}}$

Where p, P and P^-1 are probability density function, cumulative density function and inverse cumulative density function respectively. All time units are in seconds.

For Reindeer, T_min=180 seconds and T_max=360 seconds initially. But there are many factors can alternate T_min and T_max. The time can be halved with the "Reindeer baking grounds" upgrade. The heavenly upgrade "Starsnow" also reduces the time by 5%.

See the table below for some common probabilities, assuming 30 FPS:

Time between Reindeer Spawns
Chance	Without upgrade	With Starsnow	With Reindeer baking grounds	With both
0%	180 seconds	171 seconds	90 seconds	85.5 seconds
0.1%	198.3 seconds	188.5 seconds	100.3 seconds	95.3 seconds
1%	206.9 seconds	196.8 seconds	105.1 seconds	100.0 seconds
10%	219.8 seconds	209.1 seconds	112.3 seconds	106.9 seconds
25%	227.1 seconds	216.1 seconds	116.4 seconds	110.8 seconds
33.3%	229.8 seconds	218.7 seconds	117.9 seconds	112.3 seconds
Average	233.733 seconds	222.484 seconds	120.153 seconds	114.391 seconds
50%	234.5 seconds	223.2 seconds	120.6 seconds	114.8 seconds
66.6%	238.8 seconds	227.4 seconds	123.0 seconds	117.1 seconds
75%	241.2 seconds	229.6 seconds	124.3 seconds	118.4 seconds
90%	246.5 seconds	234.7 seconds	127.3 seconds	121.3 seconds
99%	254.7 seconds	242.5 seconds	131.9 seconds	125.6 seconds
99.9%	259.9 seconds	247.5 seconds	134.8 seconds	128.4 seconds
100%	360 seconds	342 seconds	180 seconds	171 seconds

Upgrades

Here is a list of the 7 Upgrades that are from the Christmas Season. All upgrades are Chirstmas-themed cookies and can be unlocked randomly when clicking a Reindeer.

Icon	Name	Unlock condition	Base price	Description	ID
	Christmas tree biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "Whose pine is it anyway?"	143
	Snowflake biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "Mass-produced to be unique in every way."	144
	Snowman biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "It's frosted. Doubly so."	145
	Holly biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "You don't smooch under these ones. That would be the mistletoe (which, botanically, is a smellier variant of the mistlefinger)."	146
	Candy cane biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "It's two treats in one! (Further inspection reveals the frosting does not actually taste like peppermint, but like mundane sugary frosting.)"	147
	Bell biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "What do these even have to do with christmas? Who cares, ring them in!"	148
	Present biscuits	Minimum 20% drop chance from finding a reindeer during Christmas season	252.525 billion	Cookie production multiplier +2%. "The prequel to future biscuits. Watch out!"	149

Achievements

There are five Achievements related to Reindeer:

Icon	Name	Description	ID
	Let it snow	Unlock every Christmas-themed cookie. Owning this achievement makes Christmas-themed cookies drop more frequently in future playthroughs.	111
	Oh deer	Pop 1 reindeer.	112
	Sleigh of hand	Pop 50 reindeer.	113
	Reindeer sleigher	Pop 200 reindeer.	114
	Eldeer	Pop a reindeer during an elder frenzy.	265

Debug

You may use the debug upgrade "Reindeer season" to spawn Reindeer faster (every 0.6 seconds). Check the Cheating page on details on how to activate it.

Trivia

• Reindeer have random names which will show up when clicked. They are the traditional names of Santa's Reindeer: Dasher and Dancer, Prancer and Vixen, Comet and Cupid and Donner and Blitzen, and the most famous Reindeer of all, Rudolph, which is a relatively modern one (first appeared in a 1939 booklet written by Robert L. May).
• The flavor text for Christmas tree biscuits refers to the improv TV show Whose Line is it Anyway? hosted by Clive Anderson (original UK version) and Drew Carey or Aisha Tyler (US version).
• The Holly biscuits were temporarily renamed Mistletoe biscuits in version 1.0403, before being changed back in the Valentine's Day update. The icon still had red berries during this time, even though mistletoe berries are white.
• Reindeer are not affected by the Golden Switch, and will still spawn even when it's on.
  • Despite this, Distilled Essence of Redoubled Luck can make 2 Reindeer appear at once just like it does with Golden/Wrath Cookies.
• Even though Reindeer give similar bonuses to Golden Cookies, they do not count as Golden Cookies, and thus will not unslot Holobore in the Pantheon if clicked.
• Shortly after loading the game, it is impossible for a Reindeer to appear without any form of cheating. Using the command 'Game.seasonPopup.spawn ()' Would spawn a bouncing golden cookie instead of a Reindeer. The golden cookie would do nothing whatsoever when clicked as it does not count as a Reindeer nor a golden cookie. In order to spawn a Reindeer in that amount of time, use the command:

  Game.seasonPopup.time = Game.seasonPopup.maxTime;

• If the "Golden cookie sound selector" upgrade is purchased and activated, Reindeer make a sleigh bells sound effect when they spawn.