Winter Wonderland

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The Winter Wonderland Event is a recurring seasonal event held from December 1st to January 1st (UTC+0) of the following year. It was first added in 2022.

During the event, Dr. Cubical will put on a Santa hat, and call himself Dr. Frostical.

Overview

The sleigh at Shipyard.

Winter Wonderland in disrepair.

The event location is the Winter Wonderland, a far away place, and (presumably) colder than even the North Pole, accessible by the icon at the left of the screen or by clicking the reindeer sleigh near the Shipyard. Dr. Frostical's Elven workforce works there to make presents, cookies, and milk for the holiday season. However, all the buildings to create them were destroyed, and you must help him rebuild, or else Christmas will be ruined!

There are 9 separate resources, all exclusively created and isolated in the Wonderland.

• Cookies - The main event currency, used to rebuild and upgrade every building. Created from the Cookie Factory.
• Presents & Trained Reindeer - Both give a Town Resource bonus. Created from the Present Factory and Reindeer School respectively.
• Milk - Increases the efficiency of workers except in the Coal Factory by 1+log(milk+1)/log(1000)*milk^0.03*0.25. Created in the Reindeer Milk Farm.
• Milk Reindeers - Used to create Milk. Created in the Reindeer Milk Farm.
• Reindeer - Used to create Trained Reindeer and Milk Reindeer. Created in the Reindeer Farm.
• Toys, Wrappings, & Trees - Trees are used to create Wrappings, and it and Toys are used to create Presents. Created in the Toy Factory, Present Factory, and Tree Factory respectively.

Mechanics

Production mechanics, Part 1.

Production mechanics, Part 2.

The production of each building is governed by a surprising number of mechanics. You can see the exact values that go into the calculations by hovering over the numbers.

The base is "Efficiency per worker (raw)". This measures the productivity of the elves you put into that building, and despite the (raw) label, it is modified by any "efficiency per worker" bonus. The initial per-building values are:

Coal	Cookies	Paper Mill	Wrapping	Toys	Trees	Deer	School	Milk Train	Milking
20%	5%	6.667%	10%	10%	10%	5%	10%	5%	10%

Next is the milk factor. This is granted by the amount of milk you have accumulated via milking reindeer; milk is only increased, never consumed. The milk factor grows slowly (especially initially), but is still powerful, and is upgraded through various perks. The initial formula for the milk factor is 1 + log(milk+1)/log(1000) * milk^0.03 / 4.

The last of the efficiency factors is the temperature factor. As the weather gets colder, buildings also get colder and their production decreases. This can be counteracted by using ovens from the Coal Factory to provide heat, as well as perks that provide heat. If a building's temperature drops too far, it will freeze and be unable to produce at all. The initial formula for temperature factory is 1x at 0c and x0.5 for every -10c. The "Overheat" perk allows for bonus efficiency at heat above 0c, and Insulation reduces the penalty.

Combining all the above factors and multiplying by the number of elves gives a total "efficiency," listed in percent. For the example in the screenshot, "Efficiency per worker (raw)" is 240% (multiplied by 48x through various perks), Milk Factor is 2.33188 (from a raw milk of 47959629, with the ^1.15 perk), and the temperature factor is 1. With 20 elves, this gives 240 * 2.33188 * 1 * 20 = 11193.02% total efficiency, matching what is shown.

The upper box converts efficiency into production. "Production at 100% (raw)" determines how the bottom efficiency becomes production, and it is unchanged by any bonuses. If there are insufficient inputs, the production will be throttled appropriately, but sometimes the numbers will display wrong. All values in the table are per-second, arrows indicate (consumed -> produced).

Coal	Cookies	Paper Mill	Wrapping	Toys	Trees	Deer	School	Milk Train	Milking
N/A	4	1 -> 1	1+1 -> 1	1	1	2	1 -> 1	1 -> 1	0.1 -> 25

The tier multiplier is applied on top of efficiency before converting to production. Buildings can be upgraded, and each additional tier grants 0.25 to the tier multiplier. There are perks that increase this: For instance, there is a perk that "multiplies bonus production per building tier x4." This only affects the bonus, i.e. it changes the formula from 1 + (tier - 1)/4 to 1 + (tier - 1) = tier.

Upgrades

Exceptions to the formula are in bold.

Building	Formula	T1	T2	T3	T4	T5	T6	T7	T8	T9	T10
Coal Factory	100*120^(tier-1)	100	12000	1.44e6	1.73e8	2.07e10	MAXED
Cookie Factory	none	0	4000	1.25e5	5e5	1.25e6	3e6	5e6	1e7	1.75e7	2.25e7
Gingerbread House	100*12^(tier-1)	100	1200	14400	1.73e5	2.07e6	2.49e7	2.99e8	3.58e9	4.30e10	5.16e11
Present Factory	500*12^(tier-1)	500	6000	72000	8.64e5	1.04e7	1.24e8	1.49e9	1.79e10	2.15e11	2.58e12
Toy Factory	350*12^(tier-1)	350	4200	50400	6.05e5	7e26e6	8.71e7	1.05e9	1.25e10	1.50e11	1.81e12
Tree Factory	200*12^(tier-1)	200	2400	28800	3.46e5	4.15e6	4.98e7	5.97e8	7.17e9	8.60e10	1.03e12
Reindeer Farm	250*12^(tier-1)	250	3000	18000	4.32e5	5.18e6	6.22e7	7.46e8	8.96e9	1.07e11	1.29e12
Reindeer School	400*12^(tier-1)	400	4800	57600	6.91e5	8.29e6	9.95e7	1.19e9	1.43e10	1.72e11	2.06e12
Reindeer Milk Farm	10000*12^(tier-1)	1e5	1.2e6	1.44e7	1.73e8	2.07e9	2.49e10	2.99e11	3.58e12	4.30e13	5.16e14

Quests

Winter Wonderland quest board.

Just like the Halloween event the Winter Wonderland has quests that can be completed for permanent rewards.

Calendar

One of the main features of the event is the Winter Calendar, an upgrade grid that reveals two upgrades for every day that passes and allows you to chose a number of perks equal to the current day. Perks can be reset every 12 hours, or 30 minutes if the appropriate perk is selected.

For the first 12 days, the excitement and strategy comes from new (and increasingly more powerful) perks being revealed. In the next 12 days, the strategy revolves around using the available perks to deal with punishingly cold temperatures. Generally there is a reprieve around Christmas, when the weather clears and people who got started late can quickly catch-up and finish the event, while those playing the whole time can grind for maximum bonuses.

Day 1

Cookie Factory	Efficiency per worker x2
Reindeer Farm	Max. workers -5, Efficiency per worker increases accordingly

The cookie factory perk is straightforward, and always a must-have.

The reindeer farm increases base efficiency per worker (raw) to 6.667%. Reindeer are not a bottleneck, so this is low-priority even lategame.

Day 2

Reset Cooldown	Reduced from 12 hours to 30 minutes
Tree Farm	Efficiency per worker x2

Reset cooldown is much more useful than it seems. It reduces the cooldown as soon as the perk is taken, and *also* sets a 30 minute cooldown when you reset **while** the perk is taken. Because of this, careful use allows the cooldown to *always* be 30 minutes at most, while still keeping full perks. For instance, you can take Reset Cooldown as the first perk of a new day, immediately reset, and then allocate perks as desired (without taking reset cooldown). If you mess up, you will only have to wait 30 minutes to recover. Make sure to always save room for reset cooldown (probably choose it first) when resetting otherwise, and on a long cooldown.

Tree farm is another low-priority lategame perk.