About the Game
The Ultimate Turn-Based Cat Tactics and Breeding Roguelite
From Edmund McMillen (The Binding of Isaac, Super Meat Boy) and Tyler Glaiel (Closure, The End Is Nigh) comes a deeply tactical legacy roguelite that asks:
What if you could breed the perfect army of whiskered warriors, then send them on tactical adventures in search of food, money and loads of treasure?
The Cat Loop:
Welcome to Boon County, where each day you’ll assemble a team from your ever-growing house and outfit your cats with class-specific collars (Fighter, Tank, Mage, and many more). Send your mutant feline squad clawing through adventures of turn-based battles that demand careful positioning, wild power combos, and environmental shenanigans.
Combat That Rewards Mastery:
With 1000+ unique abilities (75 per class), 900+ items, and countless environmental interactions, every run throws fresh tactical puzzles at you. There’s real depth here, and endless room for experimenters and optimizers alike.
Breeding Creates Your Future:
Cats that return home carry scars, experience (and sometimes extra heads!) Pass down strange skills and mutations, tinker with your bloodline, tackle genetic quirks, and build ever stranger, more powerful cats for the next adventure.
Epic Scope:
200+ hour main campaign
10+ character classes with 75 unique abilities each
900+ wild items
200+ enemies and bosses
Roguelite progression: never experience the same game twice.
Choices at every turn. Money! Items!! And genes!! All matters.
From Simple to Infinitely Complex:
Mewgenics welcomes you in and then reveals more and more layers over time. Early runs teach the basics, but soon you'll be optimizing breeding chains, discovering unexpected ability combos, and making agonizing strategic choices about whether to keep a cute kitten or give it to one of the many NPCs to upgrade your house. Mewgenics offers you a path to tactical mastery while embracing chaotic emergent gameplay.
Build, experiment, adapt! There’s always a new way to experiment with (and break) the game.
Also: you can pet the cats.
Screenshots
15 images
Version Information
Steam Patch Notes
Official update history
Mewgenics 1.1 is now live for everyone on the main branch of the game!
Legacy versions of Mewgenics will still be available through beta branches on steam. See here for instructions on how to remain on version 1.0 if you so choose.
Full patch notes:
Mewgenics 1.1.21039
Breeding/House Changes
- Fixed some issues with high amounts of negative Stimulation.
- Fixed Stimulation treating birth defects on parents the same as positive mutations. Higher stimulation now decreases the chance of birth defects on parents being inherited.
- The effects of Stimulation are now reduced the more inbred a kitten is.
- The chances of inheriting a parent's birth defect are significantly increased the more inbred the kitten is.
- "Mutation" stat will no longer reroll any existing mutations or birth defects.
- "Mutation" stat will now only roll simple mutations (+2/-1 stat ones) until >10 Mutation. More Mutation beyond this will increase the chance of rolling mutations with effects.
- Heads that have 1 eye/eyebrow/ear (ex. Cyclops) will no longer also count as the "Missing" birth defect for the other eye/eyebrow/ear.
- Chance of inheriting a voice from a parent is now 75% instead of 98%.
Events
- Baphomet: Removed bad outcomes from sacrifice and lose 10 HP options.
- Steven Fetus: Removed Deja Vu from bad event outcome and replaced with a new pool of disorders for it.
- Sacrificial Altar: Removed bad outcomes from sacrificing cats.
- Itchies or Wheezies: Itchies now also gives a forever flea familiar and Wheezies now also gives +2 LCK.
- Insatiable Rage tragedy no longer only gives Blood Frenzy.
- Infestation weather event: Units now only spawn charmed maggots when killed.
Disorders/Parasites
- Hypersomnia: fixed order Sleep applies so that passives/items affecting sleep can trigger correctly.
- Malaria: Now only reduces CON.
- Naegleria Fowleri: Become AI controlled instead of dead at 0 INT.
- Schrodinger’s Syndrome: +1 to all stats and gain an extra turn at the start of battle.
- Sociopathy: -5 CHA, +5 INT.
Cleric
- Cleanse: Is now single-target. Range increased to compensate. Upgrade changed to make it hit a large area.
- Open Wounds: Now deals magic damage.
Druid
- Plant Mushroom: -2 mana cost.
- Summon Caterpillar: -1 mana cost.
Fighter
- Merciless: No longer triggers during actions that cost movement points.
Hunter
- Ball Of Spiders: No longer scales damage with DEX.
- Egg Sac Trap: -1 mana cost.
- Flea Shot: No longer scales damage with DEX.
- Heavy shot: -2 damage, 50% miss chance, +1 mana cost.
- Hunter's Boon: Now only triggers once per turn, but triggers off of any kill and not just enemies.
- Scattershot: +3 mana cost. Upgrade no longer exempts allies from its radius.
Mage
- Mage Basic attack: +2 range.
- Blizzard: Reworked to deal very high damage with 100% Freeze (and no Slow).
- Bolt: +2 range.
- Burning Paws: +1 Burn. (upgrade +2 Burn.)
- Fire Blast: +2 range.
- Firebolt: +2 range, +1 damage.
- Five: Trigger is now exactly 5 Mana or HP.
- Forbidden Spells: Now have 2 separate disorder pools, a basic pool (90% chance) and a crippling pool (10% chance). Psychosis is in the crippling pool. Luck affects which pool is chosen.
- Forbidden Flame: Burn increased.
- Forbidden Flood: Damage increased.
- Forbidden Frost: Damage/heal increased.
- Forbidden Fulmination: Damage increased.
- Four: Trigger is now exactly 4 Mana or HP.
- Freezerburn: +1 attack radius
- Ice Paws: +2 Slow, +5% freeze chance. You can damage frozen units. (upgrade +3 Slow.)
- Icicle Zapper: +1 damage.
- Jolt: +2 range.
- Inferno: Now deals 8 damage, 8 Burn (upgrade 12 damage 10 Burn).
- Lightning Paws: +1 damage, +5% Stun chance. (upgrade +2 damage, +7% Stun chance.)
- Light up the Stage: +1 sparkle per turn. (upgrade +3 sparkles per turn)
- Long Cast: +2 range. (upgrade +5 range, +1 magic damage.)
- Overload: +2 damage. (upgrade +4 damage.)
- Shatter: -1 mana cost.
- Thunderburst: Now deals 12 damage, 50% Stun (upgrade 16 damage, 100% Stun)
- Tri-Attack: +2 range +1 damage.
Monk
- Fist of Fate+: repeat must hit different targets each time.
- Stance Switch: ai control now attempts to use this if it’s out of other actions.
Necromancer
- Evil Incarnate: -3 mana cost.
- Flesh Golem: -3 hp cost per cat to cast.
Psychic
- Shatter the Sky: -2 mana cost.
Tank
- Ass Blast: -1 mana cost, +2 Knockback.
- Clap: -1 mana cost.
Thief
- Caltrops: +1 movement. (upgrade +5 movement.)
- Nail Flurry+: Multi-hit amount is now locked in when the ability is cast instead of updating mid-ability if DEX is gained or lost.
- Poison Gas: +1 poison. (upgrade +2 poison)
Tinkerer
- Tinkerer Basic Craft/Throw: AI is slightly better at sequencing these now. (prefers to craft without wasting move first, prefers to use weapon before throwing it)
- Added "Blast Resistance" status effect. Blast resistance is added onto EMP, Mr. Mega, Napalm, and Demo Man tinkerer passives.
- Throw Weapon: no longer costs an action to use.
- Bombchu: -2 mana cost.
- Build Nuke: -2 mana cost.
- Conductor: now makes your weapon inflict electric damage if you are wearing metal.
- Electrolyze: -2 mana cost.
- EMP: +1 explosion damage. (upgrade +2 explosion damage.)
- Firecrackers: -2 mana cost.
- Lightning Rod: now grants Tech instead of Charge. Upgrade now grants Energized.
- Math!: now deals electric damage + stuns on prime numbers. Upgrade now gives you Tech on prime number instead of refunding mana.
- Mr. Mega: +1 blast radius, +2 explosion damage. (upgrade +4 explosion damage.)
- Napalm: +2 Burn. (upgrade +4 Burn.)
- Rocket Ride: -2 mana cost.
Misc
- Hitler's suicide can no longer miss. Increased the shield amount on his explosive phase.
- Added +4 HP to Führerfötuses.
- Final Boss & his Cat Clones are banned from rolling Depressing elite buff.
- Soahc's form change now ignores combat speed setting.
- Added +50 HP to The Coven and Tormentor.
- Added +50 HP to Dreadnoughtus’ head and +2 damage to its legs.
- Cursed Items and Parasites are no longer excluded from item degradation.
- Head mutation that gives you a bonus turn now has -2 speed.
- Spewer: HP nerfed to 100
- Stacy: base HP buffed to 125
Other Changes/Fixes
- Inventory "Slot" sort order now matches the order shown above the cat.
- Jester collar will always appear at the end of the class list, even if unlocked before Monk.
- Inventory/Furniture "Alphabetical" sort lists now use locales for sorting (change needed for some future language support).
- Backpack button added to shop screens.
- The tooltip for items with active abilities now shows the ability button in the tooltip.
- Added element indicators to item buttons.
- Misc tooltip fixes (Half-Rat, Robotic Arm).
- Misc localization fixes.
- Misc typos fixed.
- Fixed incorrect tiles in one level in The Rift.
- Fixed Rare Cat Tree C's art not matching collision.
- Loot cutscenes now all show a fallback cat for moral support if you loot with only one cat in the party.
- New cat vocal sound sets added.
- Fixed Champion Katzebot portrait not properly showing.
- Added tooltip icon for Temporary Item.
- Gave RiftKitten tooltip text.
- Added fallback behavior for another type of save file corruption
- Some random rolls with 0% or 100% odds will no longer advance the RNG.
- Fixed boss rewards not dropping common rolls
- rare taxidermy bear flipped
- fixed plant mushroom incorrectly being once per turn
- fixed conductor (passive) bonus damage not applying to damage conducted through water
- fixed upgraded Strength in Numbers not working properly
- fixed a few abilities that apply random negative stats not properly applying those stats
- fixed missing line breaks when injuries in random events are prevented
- updated portraits for Champion Soahc to represent proper in-game appearance
- Draven got a tan ( as god intended )
- Chan Hung colors updated too
- Fixed Bloody Soul Claw healing what it attacks instead of healing yourself on kill
- Hexagram Sigil's Buff Immunity now has an exception for Magic Damage Up so the item can work as written
- Fixed Eternal Health+ having a maximum for how much luck it can grant
- Fixed another case where certain kinds of jump animations could desync visual and actual positions of characters
- Fixed 5 more items having incorrect rarity set and being undroppable as a result
- Edited Champion Abandoned One portrait
- fixed pipe sounds being muted from the new house volume system as well
- fixed space helmet blocking 100% instead of 30% as listed
- fixed toolbox not providing brittle/fragile immunity to items without sets specified
- fixed a crash related to Korbee sucking up a late game 3x3 miniboss
- fixed class icons on ability needles being animated
Mewgenics 1.0.20763
This patch was previously tested on the beta branch of the game and is now pushed live. These patch notes encompass 2 beta patches plus one or two extra changes today.
Important changes and major bugfixes
- Left/Right cat selection arrows in the house behavior adjusted:
Cats are no longer grouped by room when toggling left/right. Age only. Opening the cat selection window after a new day will select the youngest kitten regardless of if you clicked around on other cats before opening the window. Dead cats are always sorted at the end (clicking left from the youngest cat will wrap around to the end of the list).
If you are ZOOMED IN to a room, the cat selection list is now strictly limited to cats in that room (clicking left/right will only toggle between cats in that room, and never select any cats outside of that room)
Current list location memory should be a little bit better when moving cats to pipe/box and then continuing with arrows. Left clicking cats while the cat status window is closed will no longer effect which cat is shown when you open the cat window.
- Traps can now be triggered with physical attacks/abilities
- Added a small visual effect & alternate walk cycle for player cats with flying
- Fixed flying units not viewing fire tiles as a hazard even though it could still burn them
- Tiles adjacent to enemy rattlesnakes/hellhands now have a hazard cost for pathfinding.
- Fixed one post-game dr beanies dialog sequence getting skipped
- Captured familiars now spawn after everything else to prevent levels from instantly ending if you had 100+ charmed flies
- Fixed Freeze not protecting corpses from damage
- The "loot" option in the events after each act's final boss is now explicitly a luck roll (luck effected this a little before, now it should effect it more making it easier to judge risk here)
Minor changes and bugfixes
- Fixed cases where a main quest item could get duplicated if you had multiple quest items equipped when completing one of them or unlocking a new one
- Fixed an alley level that generated a mouse in a hole (this was a new issue caused by the spawn order change from last week's patch)
- Fixed one act 3 enemy missing from the Hallucination pool
- Fixed Dark Ritual's upgrade not working
- Fixed Fish Necklace affecting enemy flies. Fish Necklace now uses Poisonous instead of its previous (effectively the same) effect.
- Fixed Tinfoil Hat not working against permanent madness/charm. Tinfoil Hat's effect now cleanses relavent effects when it's passive is applied to prevent initialization order dependency for its effects.
- Fixed a late game boss repeatedly shooting a frozen minion in some cases.
- Fixed Stalk (and similar) ability targeting from going crazy if the tracked target goes off map
- Fixed no-target ability hotkeys from deselecting if you move the mouse around on the map
- Fixed a few enemies that transform on death from being stuck at 1hp if killed while stunned (as well as 1 or two player effects that used the same passive)
- Fixed Meow+ not being musical
- Minor fixes to shark enemy colors
- Fixed incorrect name for "Polyp" item
- Fixed an incorrect international character in Steven's font
- Fixed "Thicken"'s statuses not having icons or tooltips.
- Stalk tooltip fixed to specify "enemy" instead of "unit"
- Fixed a few tooltips having incorrect info (Pins and Needles, Old Hose)
- (Most tooltip changes are in english only for now, this won't leave the beta branch until those are in)
- (Internal change) Localization csvs have been merged into one large file instead of 20 smaller ones at the request of the localization team. This shouldn't cause any noticable changes in game, but if anything looks off let me know!
- Misc localization fixes
MEWGENICS 1.0.20695
This patch is focused on major bug fixes and "easy" changes that are unlikely to cause secondary issues
QOL Changes:
- Coin/Food/Item zoomers no longer prevent you from opening the backpack while they're animating
- Added "Limit Framerate" to video settings.
- "Tall" tiles now go semi-transparent when in tactical view
- Fixed item sort order upon returning from an adventure (one of the last changes pre-release was adding sort buttons to the in-combat inventory screen and this broke how they sorted upon returning home)
- If playing on steam deck, End Turn (Hotkey) is now bound to "Enter Key" by default instead of nothing. Should allow for some steam input config hacks for those who want to bind it to a back button easier.
Bug Fixes:
- Fixed Copy Cat / Learn From Me being able to copy things other than spells in some cases
- Fixed Tina3's Mama Maggot and Familiar Korbee not having a portrait
- Fixed a certain very late game boss fight's summons running away when the boss died. In this particular case they weren't supposed to run.
- Fixed a few cases where an ability or passive icon in the UI would not update after being overridden by a new one (ex when using a Forbidden spell while already having 2 disorders)
- Fixed a minor odds issue related to how Stimulation affects a parent with a class passive but not a class active
- Fixed level spawn order to spawn static objects before familiars (This should fix a few cases where a familiar occupies a space a static object wants to be, causing it to spawn in a different place and sometimes blocking cats or enemies in)
- Fixed Eat Rock and Rock Crusher showing a tooltip for Petrify
- New idle animation for pet rock and pet boulder and fixed death gib
- Fixed the way Interchange interacts with Bonus Move and Bonus Attack
- Fixed a case where quitting after losing your last cat to a sacrifice event would cause a crash upon re-loading the save file
- Fixed a few flickering pieces in a cutscene
- Fixed amoebas being able to drop larger rocks partially off-map
- fixed a very late game enemy leaving an invisible corpse
- fixed Unscarred+ and Uncapped HP causing infinitely growing HP
- lowered the odds of seeing a variant version of one act 3 miniboss
- Added "texture_atlas_size" to settings file to allow for some configuration hacks for under-min-spec machines. Default is 4096. Note that lowering this will also require lowering "texture_scale_big" as well so larger textures can fit into the atlas. This will remain settings-file-only, no intent to add this to the options menu.
- Misc localization fixes
This patch was staged on the BETA BRANCH for a day before setting live. If you are interested in running on the beta branch for future patches, check here for instructions.
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Current Release
23372843
Uploaded May 23, 2026
System Requirements
How to Install
Mewgenics.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
4.4 GB
23372843
F0C6569A
9ef4871637e8676128b1bf9bb5dec52494f2ac0c1de7b54dfc5e213ebf48c6a9
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Download Mewgenics for PC with a direct link or via torrent. Get the full version of Mewgenics for free. Mewgenics is a Adventure released by Edmund McMillen.