Breeding

Pets and farming

• Pets
  • Pet Leveling
  • Breeding
  • Menagerie
  • Prospecting
  • Pyre
• Farm

Breeding is how you make new pets. Two pets you own produce an egg, and the pet that hatches from it inherits traits from its parents, including species, Skin and Aura.

Takes in	Two breedable pets, BC, optional Cursed Charm and Mutagenic Sludge
Produces	Eggs, then new pets with a Generation, and sometimes a Skin or Aura
Affected by	Zootechny (BC cost), Virility (cooldown), Menager (egg and pet space)

Eggs

An egg becomes a pet when you hatch it. You need free pet space to hatch (see Stables and pet space), and eggs themselves take egg space, which Menager raises. You can inspect an egg's parents before hatching. On the Main profile eggs can be sent to other players, but restricted profile modes block player transfers (see Profile Modes).

Eggs can come from three places:

• Breeding your own pets.
• Loot Actions, as wild eggs.
• A Genesis Egg, which is a Special that creates a pet directly.

Breeding two pets

Pick two of your pets to breed. Each parent must be:

• At least level 18.
• Off its breeding cooldown.
• A breedable species. Supporter species and the current seasonal species cannot breed.

You can breed several times in one go, and you can choose to hatch the eggs straight away. A batch stops when you run out of BC, space, matching breeding items, or when a parent goes on cooldown.

Costs and cooldowns

• BC cost: the first breed each day costs 200,000 BC, and the cost doubles for every pet you breed after that on the same day. The count resets daily. Zootechny discounts it.
• Cooldown: after a pet is bred, it must wait before breeding again. The wait roughly doubles each time that same pet has been bred. Virility takes time off the wait.

Check the breeding preview for the exact numbers for your parents.

Inheritance

When an egg hatches, its pet gets:

• Species: an equal chance of either parent's species.
• Generation: one above the higher parent (see below).
• Skin: rolled separately, and often none (see Skins).
• Aura: rolled separately, and often none (see Auras).

Skins and Auras are cosmetic. They do not make an ordinary pet faster. Species decides which Adventure the pet prefers.

Skins

A Skin gives a pet a colouring not seen in the rest of its species. Each Skin has a base chance of appearing on the hatched pet. A pet can have only one Skin.

Skin	Base chance
Alpha	10.00%
Beta	1.00%
Gamma	0.50%
Delta	0.40%
Epsilon	0.30%
Zeta	0.20%
Eta	0.10%

Each parent that has a given Skin doubles the chance of that Skin. Each parent holding Cursed Charm when you breed triples all the Skin chances. Charms are used up. There are also special Skins that cannot be bred, such as the Burnt Skin from the Pyre.

Auras

An Aura is a glow around the pet. The base Auras are Green, Purple, Orange, Cyan, Red, Pink, Blue, Yellow and Black, and they are all equally rare.

• The base chance of an Aura on the hatched pet is 5%.
• Each parent that has an Aura doubles that chance.
• Each parent holding Mutagenic Sludge when you breed triples it. Sludge is used up.
• When an Aura appears and a parent has one, there is a high chance the pet gets that parent's Aura. Otherwise it gets a random base Aura.

The Pyre's Smoldering and Damned Auras are never inherited, and a parent with one counts as having no Aura.

Breeding items

Pets can hold Cursed Charm (for Skins) and Mutagenic Sludge (for Auras) while being bred. Give the item to the pet before you breed (see Held items). For batches, the held item is used on the first breed, and each further breed takes a new one from your inventory. Both items have other uses, so plan your supply before starting a long collection project.

Generation and lineage

A pet's Generation says how far it descends from the original pets. When a pet hatches, its Generation is the higher parent's Generation plus one. A lower Generation is therefore rarer, and higher Generations are more common. Generation is lineage only and has nothing to do with strength or Tier.

Every pet's parents can be traced back to its Generation I ancestors. Generation I pets came from the early prototype pet system, so they are extremely rare and cannot be made by normal breeding. Their rarity makes them wanted by collectors.

Wild eggs

When you perform a Loot Action, each one has a small chance to find a wild egg. Its parents are wild pets (pets that players released) that match the action: Fish Loot Actions give Fish species, and so on. It needs a free egg slot, so keep a couple free. New players can also claim a first egg to start their fleet. Parents are picked from well-bred wild pets when possible, so wild eggs tend to hatch pets of a fairly high Generation.

Genesis Egg

A Genesis Egg is a Special that creates a new Generation I pet. Unless the Special says otherwise, the species is random, and its Skin chances are five times higher than normal. It ignores your pet storage limit. Some Genesis Eggs are for a specific species, so read the Special before using it.

How Breeding connects to other features

• Parents come from your fleet of Pets. Everything you hatch is recorded in the Menagerie.
• Specials such as the Auralyzer and Skinulator can change a pet's Aura or Skin.
• The Pyre can reroll a pet's Skin, Aura or species, but at the risk of losing the pet.
• Prestige perks reduce costs and cooldowns.

Changelog

Release date	Update	Changes
October 31, 2026	v2026.10.31	Genesis Eggs Select multiple eggs to hatch, send or abandon them together, using the same search and filters as the egg list.
October 14, 2026	v2026.10.14	Weekly Genesis Eggs
July 7, 2026	v2026.07.07	In Manage Pets → Breed, once a pair goes on breeding cooldown it automatically clears from the selection so you can pick a new pair without closing and reopening the menu.
June 28, 2026	v2026.06.28	Breeding now lives inside Manage Pets → Breed so you can filter, search and sort your pets and pick parents the same way as other bulk actions. Pick a Boost for each parent right in the breed panel; choosing one for a parent auto-applies it to the other parent if that one is empty. New times field lets you breed the same pair multiple times in one go (limited by breeding cooldown, egg/pet space, balance and boost items). Hatch toggle can auto-hatch each egg as it’s made. Live cost preview shows the total BC, boost items used, and the cooldown you’ll incur before you commit. When hatching, special pets now tell you their aura and skin immediately.
June 12, 2026	v2026.06.12.2	Hatching an egg no longer opens a follow-up modal. You’ll see the usual toast/output and confetti like before, no extra popup.
April 24, 2026	v2026.04.24	When you scroll the eggs list, parent names now load together in one go instead of each egg asking the server separately. Scrolling the egg list feels smoother and is much less likely to trip request limits.
March 27, 2026	v2026.03.27	Breeding modal overhaul. (ShadyBliss) The old two-dropdown parent selector is gone. There’s now a single unified parent picker that stays open while you select both parents. You can search by pet name and filter with a Prioritize charm/sludge holders toggle to bring pets carrying breeding modifiers to the top. Selected parents are shown as numbered slots (1. / 2.) and highlighted in the list with their Parent A / Parent B labels. Click a selected pet again to deselect it. Held breeding items (Mutagenic Sludge, Cursed Charm) are now shown directly in the picker as bracketed labels so you can see them without digging through inventory.
July 22, 2025	Game Update (07-22-2025)	Genesis Egg, Auralyzer has been added to the Special reward pool
May 16, 2025	Another Pets Update	Pet breeding costs now reset daily (from weekly) BC cost to breed Pets will remain, as it encourages collaboration with other players in collecting rare variants, as well as usage of Skin/Aura-boosting held items Lineage: Interactively trace a Pet’s ancestry all the way back to its origins You can now generate a sleek lineage tree for a Pet that traces its parentage all the way back to its ancestors Trees are truncated initially for performance and readability if a Pet’s lineage is too complex, but can be expanded fully by hovering over unloaded nodes
May 10, 2025	Game Update (05-10-2025)	Genesis Egg: A new special that, upon use, creates a Generation I pet Genesis Eggs have an elevated base skin probability (5x) These Specials are now findable from Actions, and are also a Weekly Burn Reward More methods to obtain these will be released in the future (e.g. KR Store)
April 29, 2025	Game Update (04-29-2025)	Changelog / Pets Breeding two pets now costs BC BC cost scales based on number of pets already bred during the week Changelog / Prestige Virility: Max perk level increased to 100 (from 32) Zootechny (New Perk): Lower cost of breeding Pets
April 13, 2025	Game Update (04-13-2025)	Virility (New Perk): Skip wait time before a Pet can be bred again Cooldown reduction is per-user: it does NOT apply to the pet itself
February 27, 2025	Game Update (02-27-2025)	Eggs dropped from Loot Action are now always of the type of that Action For ex. getting an egg from Mine always yields a Mine Egg A player’s first egg will now always be of Fish type
February 22, 2025	Game Update (02-22-2025)	Eggs from the wild now drop each type (Fish, Hunt, Explore, Mine) in equal proportions
November 5, 2024	A Pets Update	A new system has been introduced for Pet breeding, heritage and genetics Pet breeding cooldowns now follow an exponential backoff pattern First time breeding induces an 8 day cooldown, second induces a 16 day cooldown, third 32 day, so on and so forth Pets now keep track of their Generation A newly hatched Pet will inherit the highest Generation of its parents plus one All Pets owned prior to this update have had their Generation set to I, and their parentage information has been cleared due to incompatibility between the old and new systems Pets with lower Generation counts will be significantly rarer by virtue of the heritage system A Pet’s Generation does not affect any gameplay functionality Mutagenic Sludge (formerly Neurotoxic Chemicals) or a Cursed Charm during breeding, the chance for a Skin or Aura mutation can be artificially increased significantly (but the item is consumed in the process) Eggs are now considered separate entities from Pets in-game An Egg’s inherited properties are determined when it is hatched, not when it is produced Eggs can be freely transferred to other players before they are hatched Wild Eggs can be found as a rare drop from loot-bearing actions
March 15, 2021	v4.8.0	"interesting" message now shows up if you try to breed with another player
March 5, 2021	v4.4.1	Eggs can now be transferred between users
February 21, 2021	v3.7.6	You can only incubate your own eggs now
February 9, 2021	v3.1.3	Made eggs easier to find (Ancient Fossil)

Guide: Breeding and the Menagerie · Pets

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