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Pokémon breeding is a method of obtaining new Pokémon by producing and afterwards hatching an Egg. Some base form Pokémon, including many Baby Pokémon, can only be obtained via this method.

How to Breed

Lagoona Lake

The Day Care at Lagoona Lake.

Pokémon can be bred by leaving two compatible Pokémon at the Pokémon Day Care located next to the Pokémon Centre at Lagoona Lake. Two Pokémon are compatible to breed if they are of opposite genders and share at least one egg group.

Alternatively, breeding is usually still possible as long as one of them is Ditto, even if the other parent is genderless. In fact, genderless Pokémon can breed only with Ditto, and it is also the only method to produce offspring of male-only Pokémon species. However, Pokémon in the Undiscovered egg group cannot breed whatsoever, and Ditto cannot breed with itself. Legendary Pokémon cannot breed, while the only Mythical Pokémon that can breed are "Sea Guardians" Manaphy and Phione. They both give birth to Phione offspring when bred with Ditto.

When there are two compatible Pokémon present in the Day Care, the game will periodically decide whether the Day Care Man has found an Egg, with the chances depending on the compatibility of the two Pokémon as detailed in the section Breeding Rate.

The Day Care Man is responsible for notifying the player if an Egg is available. Normally, he faces the garden in Day Care house, but if an Egg was produced, the Day Care Man will spin to face the town, so that the player can know he has an Egg. The Day Care Man will hand the player the Egg if he or she replies that they want it and have an empty slot in their party. If the player tells the Day Care Man they do not want the Egg, he will permanently keep it. If the player says they want the Egg but does not have a spare slot, the Day Care Man will keep it until the player returns, when he will offer it again; otherwise, there is no way to refuse the Egg and receive it later.

Breeding Rate

The chance of any two Pokémon producing an Egg is determined by their species (two Bulbasaur are the same species, while Bulbasaur and Ivysaur are not) and their Original Trainers. The Day Care Man will describe the two Pokémon's compatibility when the player speaks to him. The percentage of each rate is based on each 256 steps.

SpeciesOriginal TrainerChance (With Oval Charm)Quote
Same Different 70% (88%) "The two seem to get along very well!"
Same Same 50% (80%) "The two seem to get along."
Different Different
Different Same 20% (40%) "The two don't really seem to like each other very much."
Different Egg Groups 0% "The two prefer to play with other Pokémon more than with each other."
Same Gender
Undiscovered egg group

Hatching the Egg

The process begins when the Pokémon egg is in the party. The player then needs to take a number of steps in order to further hatch the Egg. Then, after taking enough steps, the Egg will hatch into a Lv. 1 base form Pokémon of the female species' (or non-Ditto parent's) evolutionary chain. However, certain base form Pokémon can only be acquired if a parent is holding the required incense — if not, the evolved form Pokémon will be hatched instead. Soft resetting will not alter the result of the hatched Pokémon's stats. (Gender, nature, shininess, etc.)

Type of Breeding Parents Offspring
Same Species
Serperior XY
Male Blue Symbol2
Serperior XY
Pink Female Symbol2
Snivy XY
Same Egg Group
Heliolisk XY
Male Blue Symbol2
Altaria XY
Pink Female Symbol2
Swablu XY
Same Evolution Family
Raticate-M-Kanto XY
Male Blue Symbol2
Rattata-F-Kanto XY
Pink Female Symbol2
Rattata-M-Kanto XY
Ditto
Abomasnow-M XY
Ditto XY
Snover-M XY
Gender Counterpart Any compatible Pokémon
Nidoran-F XY
Pink Female Symbol2
Nidoran-F XY
Pink Female Symbol2
Nidoran-M XY
Male Blue Symbol2
Incense Breeding
Marill XY
Azumarill XY
Sea Incense
Azurill XY
No Item
Marill XY
Other (Special Case)
Manaphy XY
Ditto XY
Phione XY

*Note that each type of breeding applies to any Pokémon given the right species and breeding group.

The Pokémon egg received from the Day Care will resemble the appearance of whichever parent Pokémon it takes after. If both Pokémon are different species, the product will be a Pokémon (in its base form) sharing the species of either parent.
Egg

An egg that resembles the Pokémon Bagon.

Different Pokémon require different numbers of steps to hatch from the Egg.

To speed up the process, the player can currently use:

  • Running Shoes / Hoverboard
  • A Pokémon with the ability Flame Body or Magma Armour (they do not stack)
    • The above abilities cause the required steps to hatch to be cut into half
  • Buying the 2x or 3x Ro-Power
  • Buying the Oval Charm

The Egg Watch

In the Pokémon Egg profile, there are 2 statements indicating how soon the egg will hatch, known as "The Egg Watch". The sentences change according to the Egg's status. Other than the descriptions for Fossilized Eggs which are unique to Pokémon Brick Bronze, all other quotes are modified from those in core series games.

DescriptionStatement Status
"A fossilized Pokémon Egg." "It's rock-hard. It doesn't seem to be alive, but you never know..." Requires revival in Lagoona Lake Lab. Only seen in Fossilized Eggs.
"A mysterious Pokémon Egg." "What will hatch from this? It will take some time." All eggs begin with this quote when received or revived. Run or hover around to hatch.
"It moves around occasionally. It must be close to hatching." The egg is shown "jumping" in its profile. Continue running or hovering to hatch.
"It's making sounds. It's about to hatch!" The egg "jumps" then "shakes" in summary screen, indicating that it will soon hatch.

Incense Breeding

These are all the Baby Pokémon requiring a parent to hold the corresponding incense in order to be given birth — if not, the evolved form Pokémon will be hatched instead (note that Baby Pokémon cannot breed, as they are in the Undiscovered Egg Group). All Incenses can be purchased at the BP Shop in Colosseum Marketplace for 48 BP, with the exception of Luck Incense, which costs 200 BP.

IconItemParentOffspring
Sea Incense
Sea Incense
Marill XY

Marill
WaterFairy
Azumarill XY

Azumarill
WaterFairy
Azurill XY

Azurill
NormalFairy
Rose Incense
Rose Incense
Roselia-F XY

Roselia
GrassPoison
Roserade-F XY

Roserade
GrassPoison
Budew XY

Budew
GrassPoison
Pure Incense
Pure Incense
Chimecho XY

Chimecho
Psychic
Chingling XY

Chingling
Psychic
Odd Incense
Odd Incense
Mr. Mime XY

Mr. Mime
PsychicFairy
Mime Jr. XY

Mime Jr.
PsychicFairy
Full Incense
Full Incense
Snorlax XY

Snorlax
Normal
Munchlax XY

Munchlax
Normal
Luck Incense
Luck Incense
Chansey XY

Chansey
Normal
Blissey XY

Blissey
Normal
Happiny XY

Happiny
Normal

Inheritance

Parents can pass down various aspects to their offspring during the breeding process.

Moves

  • When a Pokémon hatches, it will have moves that it learns starting at Level 1.
  • If both parents know a move that the baby can learn via levelling up, the Pokémon will inherit that move.
  • If the parent knows any specific Egg Moves that the baby can learn, the baby will inherit the move. If the parents both know different Egg Moves, the mother's Egg Moves are passed on first, then followed by the father's.
  • If this would result in the baby possessing more than four moves, the moves take priority in the order listed:
    1. Mother's Egg Moves
    2. Father's Egg Moves
    3. TMs and HMs
    4. Inherited level-up attacks
    5. Offspring's default moveset
  • The Move Reminder is now capable of teaching forgotten Egg Moves, but only for those deleted after Version 0.14 update on 23rd June, 2017.
  • As of Version 0.14.3 update on 22nd July, 2017, the Day Care Woman now asks if the player wants the Pokémon deposited to learn the moves that they normally learn via levelling up or not when retrieving them. If the player declines, then the Pokémon will keep its old moves.

Natures

  • If one parent holds an Everstone, its Nature will always be passed down.
  • If both parents are holding an Everstone, a parent's Nature will still always be passed down, but which parent's Nature is passed down is randomly determined.

Abilities

From Pokémon Black 2 and White 2 onwards, the mother has 80% chance of passing down its ability to the offspring, regardless of it being Hidden Ability or not, and this feature is expanded to any non-Ditto parent when bred with Ditto since Pokémon X and Y. This is carried onto Pokémon Brick Bronze, except for Hidden Ability, which the inheritance is disabled to preserve the rarity of Hidden Ability Pokémon. The 20% chance of father passing its Hidden Ability to offspring starting from Pokémon X and Y is also not implemented. Instead, all bred Pokémon have a 1/512 chance to be born with Hidden Ability, and this is doubled with the Ability Charm game pass.

Individual Values

Pokémon inherit 3 of their 6 Individual Values (IVs) from their parents. 3 stats are chosen at random and a coin flip with a 50/50 chance determines whether the value comes from the mother or the father. The IVs of other 3 stats are generated randomly. If either of the parents holds Destiny Knot, which is available for purchase at Tix Shop in Golden Poké Ball Arcade for 7000 Tix, IVs of 5 stats instead of 3 from the parents will be passed down, leaving only 1 stat to have its IVs randomized. Buy the Advanced Stat Viewer game pass to view the exact IVs.

Poké Balls

From Pokémon X and Y onwards, the offspring will always be kept in the same version of Poké Ball as its mother. This inheritance is expanded to the father when bred with Ditto starting from Pokémon Sun and Moon. However, Master Balls are not passed down. Offspring given birth from a Pokémon caught in a Master Ball will be kept in a regular Poké Ball instead.

Form Differences

Eggy Proof

Shellos eggs resembling East Sea form.

Shellos family is known to have 2 different forms — West Sea and East Sea, depending on its caught location. Bred Shellos will always be in the same form as its mother, or its Shellos / Gastrodon parent if bred via a Ditto. However, it is reported that Shellos Eggs resemble their East Sea form despite its parent being West Sea.

The Greninja purchased in Anthian City - Shopping District has a special Ability known as Battle Bond, which enables it to transform into Ash-Greninja. However, Greninja with Battle Bond cannot breed.

Vivillon has 18 distinct patterns, dependent on the Original Trainer's Player ID. If bred and evolved, the Vivillon's pattern will be decided by the hatching player's ID, which means the final pattern could change upon trading when the egg is not yet hatched.

Flabébé family can hold flowers of 5 different colours. In the core series games, hatched Flabébé always holds a flower that is the same colour as the one its mother is holding, but in Pokémon Brick Bronze, it is possible for bred Flabébé to hold a flower with a different colour than its mother's one.

Pumpkaboo family has 4 different sizes. Bred Pumpkaboo will always have the same size as its mother, or its Pumpkaboo / Gourgeist parent if bred with Ditto. However, it seems that this has not been added yet, so sizes are random, though the rarity of Super Size is still kept.

2016 Halloween Event featured a White Haunter. It and its final form, Halloween Gengar, can breed, but the offspring will be a normal Gastly if the mother is a White Haunter or Halloween Gengar. 2017 Valentine's Event introduced a Red Heart Pikachu, which is completely disabled from breeding.

For breeding Pokémon with Regional Variants, the offspring's form will depend on its parents:

ParentsOffspring
The same species and Regional Variant The same form as its parents
The same species with different Regional Variants Alola Form
Kanto Form Other compatible Pokémon (as father) or Ditto Kanto Form
Alola Form Alola Form
Kanto Form with Everstone held
Everstone
Kanto Form