Cobblemon: Lost Eggs

Find an egg. Build a hatchery. Discover what’s inside.

Turn your next adventure into a hunt for something special. Discover abandoned nests, find mystery eggs in structure loot, and bring them home to hatch your next Cobblemon.

An egg for every collector

Forest · Cave · Mountain
Discover themed hatch pools filled with familiar favourites and rare surprises.

Random
Let fate decide, with a broad selection of available Cobblemon weighted by rarity.

Shiny
Hatch a guaranteed shiny Cobblemon.

Giant · Pygmy
Meet an oversized companion or a miniature new friend.

High-IV
Hatch a Cobblemon with at least three perfect IVs by default.

Double Yolk
One egg, two new companions!

Ordinary eggs can still hatch shiny Cobblemon. IVs are random unless an egg’s special bonuses apply.

Build your own hatchery

Place your eggs into Hatching Nests and improve their surroundings to speed up incubation. Different eggs benefit from different nearby blocks, giving you a reason to design a hatchery around your collection.

Decorate with themed nests and install upgrades for faster incubation, stronger care bonuses and extra Egg Fragments. When an egg is ready, interact with its nest to begin the hatch animation and collect your new companion.

Every hatch helps you progress

Earn Egg Fragments through hatching and use them to craft eggs, upgrades and useful equipment. Combine nine fragments into a Fragment Cluster to work towards more valuable recipes.

Craft a Nest Finder to help locate nearby wild nests, or upgrade to an Attuned Finder to seek out special discoveries.

Your collection, all in one journal

The in-game journal brings together your collection, hatching records and crafting recipes. Browse each egg’s hatchable Cobblemon in a searchable, scrollable list with animated previews and hatch chances.

Routine updates appear above your hotbar, keeping your chat clear while you play.

Requirements

Minecraft: 1.21.1
Mod loader: Fabric
Required mods: Cobblemon 1.8.1 and Fabric API
Java: 21

Install Lost Eggs on both the client and server when playing multiplayer. No breeding addon is required.