Breed. Splice. Conquer.

Mutarch

A creature-colony strategy game. Hatch your legion, splice it into something monstrous, and march it across a map that fights back.

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A hulking chitin-armored apex creature with glowing green veins

In one sentence: Mutarch is a single-player creature-colony strategy game where you splice genes from dead enemies into your own legion and fight champions that remember every wound.

Every creature in your legion is hatched, named and built by you, gene by gene. Lead them onto a living region map where rival clans wage their own wars, enemy champions remember every scar you give them, and death is always permanent.

If you like Monster Sanctuary, colony sims with living bases, or autobattlers with real permadeath stakes, Mutarch sits in that space: gene-splicing, a living map, and champions that remember every fight. See comparisons

Features

What you'll be doing

Gene Lab

Splice your perfect monster

Harvest genes from fallen enemies and pour them into your own creatures: skills, stat chassis, whole bloodlines. Skill rolls are graded, sockets are earned, and every splice propagates live into your roster. The only limit is what you manage to kill.

A champion card: Ixmoult the Half-Shed, third instar of Vhessk, with its war kit, stats and epithet

Unblooded

Beaten twice, wears it

Scarred, freshly wounded

Twice-Killed, stitched

Same species, four rivals. Every champion's face is baked from its own history: its hue, its scars, its stitches.

Champion system

Champions that remember you

Enemy champions aren't authored. The world generates them, names them, and promotes them through their clan's ranks. Wound one and it comes back scarred and angrier. Kill it and a rival rises to take its place. Flee, and it remembers that too. Between your encounters, a champion is busy:

It musters a war kit: real equipment that changes how it fights, piece by piece.
It raises followers, and marches with its retinue at its back.
And it's worth the risk: champions drop trophies, their own chassis for your splice bench, and the rarest biomass in the game.

The colony diorama with creatures going about their day

Living colony

A base that lives without you

Your creatures aren't icons in a list. They eat, sleep, spar and raise buildings on their own. Deeds earn renown, an alpha emerges at the top of the pecking order, and ambitious rivals will duel to depose it.

Region map

A war you're only part of

Every campaign generates a new world: the map, its rivers and roads, the names of its towns and ruins, the champions who hold them. Six clans fight over it with or without you, and territory shifts with every battle their warhosts win or lose. March through their wars, pick your fights, and read the map before it reads you.

Evolution Web

Evolve without end

Spend biomass on a sprawling evolution web: hundreds of mutations, branch keystones with real trade-offs, and no level cap in sight. Expedition tiers scale forever; so can you.

Steam Workshop

Built for mods

Mods load through the same content pipeline as the base game. Subscribe on Steam Workshop, enable what you want, and it's in your campaign next launch.

There is no separate mod API. A modded clan or unit is defined in the same JSON and art files as ours, so anything we can ship, a modder can ship.

Clans

Rival factions with their own bloodlines, doctrine, and warhost composition.

Units

Full creatures: stats, skills, sprites, animations, portraits. Field them in the wild or splice them into your legion.

Skills

Combat abilities with real effect hooks. Roll them on sockets, drop them on champions, inherit them through genes.

Genes

Chassis packages for the splice bench: stat spreads, skill inheritance, whole bloodline swaps.

Items

War-kit pieces champions equip. Graded loot with real stat and skill changes.

Expeditions

Mission templates, board events, loot tables. New ways to die on the war table.

Evolution

Mutations and keystones for the evolution web. Branch the tree your way.

Champions & world

Champion ranks, epithets, retinue rules, map sites, and the rest of the campaign layer.

Run several content mods in one campaign; a clan pack and a unit pack work side by side.
Everything is plain JSON and PNGs. Edit a file, test it locally, publish it to the Workshop.

The opposition

Six clans want you gone

The region was at war long before you hatched your first larva. Each clan fields its own bloodlines, fights with its own doctrine, and keeps its own grudges.

Khargol

Corrosion and chitin. Skitter swarms that dissolve a battle line before the brutes arrive.

Ossari

Spore chanters and synapse wardens. They win the fight in your creatures' heads first.

The Tallymen

Grim census-keepers of the dead. Every kill is counted, and every count is collected.

The Moult of Vhel

Nothing of Vhel stays what it was. Instars shed their skins mid-battle into something worse.

Blood

Hemomancers who treat wounds as currency. Yours, preferably.

The Verdant Grove

The forest, armed. Root colossi and creeping things that turn ground itself against you.

Full intel

Know your enemy

Beat a rival often enough, or buy the intel, and its dossier breaks open: war kit, retinue, standing, its whole history with you. These four are real dossiers, straight from the game at Broken intel. Hover anything for the field notes.

Skarn the Crimson, Bleeder of Hosts

leads the Blood Larva Knight

whelpAT LARGE

INTELBroken

THE THREAT

Bleeder of Hosts+20% ATK, +15% attack speed

war-kit 1/4

retinue 0/1

Unmarred. It will fight at full strength.

FIELD REPORT

Last seen: last seen at the Redmarsh (T1)
Now: patrolling the T1 marches
Command: answers to no one · minted from the clan's rot
Known for: A reaver of Blood who was hatched from a corpse-vat and remembers the screaming.

THE FEUD

Turns hunter at +50.

1crossings0brood eaten0you broke it0it fled0it routed you

CHRONICLE

First crossed at the Redmarsh (T1).

SPOILS

It carries: nothing of note
Trophy: -