Mewgenics is Edmund McMillen's cat-themed strategic roguelike (from the creator of The Binding of Isaac). Breed cats, build your team, manage your home — then send them on expeditions with grid-based turn-by-turn battles. Cats retire after their expedition, so each generation prepares the next team.
Game Data
Some database entries still show values from before the 1.1 balance update. Before planning around an exact cost or effect, compare the current in-game tooltip with the official 1.1 notes. The database has not yet been fully checked against a current game-data export.
Items & Gear
Weapons · Helmets · Trinkets · Sets
Classes & Abilities
All classes & skill trees
Creatures
Enemies · Bosses · NPCs
Random Events
Choices & outcomes reference
Furniture
Stats, themes & rare variants
Mutations
Head · Body · Tail mutations
Passives
Auto-triggering combat buffs
Weather
Battlefield weather & global effects
Set Bonuses
Set combo effects lookup
Quests & Unlocks
Achievement conditions & rewards
Guides
Getting Started
First time playing? Start here. Learn the core loop: pick cats → equip → deploy → breed → next generation.
NPC Upgrades & Cat Donations
Choose who to upgrade, check which cats qualify, and decide which parents to keep before donating.
Hidden Area Unlocks
Follow the quest-item steps for the Throbbing Domain, Rift and Ice Age, with checks for blocked progress.
Combat System
Grid positioning, mana mechanics, ability combos, and class synergies. Stuck on a stage? Check here.
Breeding & Genetics
Choose parents for an inheritance goal, understand Stimulation, and diagnose unwanted breeding results.
Event System
How stat checks work, what rewards you can get, and how to pick the best option.
Set Bonuses
How sets activate, passive vs stat bonuses, and practical build planning.
Furniture & Cattery
Furniture stats explained, themed sets, and how to optimize your cattery.
About Mewgenics
Mewgenics is a cat-themed strategic roguelike developed by Edmund McMillen and Tyler Glaiel, released on Steam on February 10, 2026. The game revolves around three core systems:
Breeding & Genetics — Parents and room conditions influence a kitten’s inherited stats and abilities. A pairing does not guarantee a specific result, and birth defects are a separate consideration from beneficial mutations. See the Mutations database and the version notes in the Breeding guide.
Grid-based Tactical Combat — Positioning, mana management, and class synergies all matter across an expedition’s battles. Retirement follows the expedition, not each individual battle; prepare future generations to maintain your roster. See Classes & Abilities and the Combat guide.
Home Management — Place furniture to tune room conditions and compare their trade-offs in the Furniture guide. When preparing cats for an expedition, compare equipment set bonuses separately from furniture.