In development · Isometric squad tactics

When reality
starts to fail —
who will you be?

A turn-based isometric squad-tactics game, in development. Command AEGIS — humanity's last shield — against the Bloom, a cosmic horror rising from the deep. XXX

Join the Waitlist
32 out of 8 billion.
Everyone counts.
Descend
The Anchors

32 out of 8 billion.
Everyone counts.

Standard forces retreat. Only AEGIS deploys — operators who are Anchors: rare humans who can hold their minds together in a place where reality won't. Their resistance isn't equal — the strongest Anchor steadies the rest, as long as they stay close.

How it plays

Isometric. Turn-based.
Story-driven.

For anyone who's ever loved deep-sea squad tactics. Find the signal, lock it down, deploy your squad, and hold the line — then bring the loot home and build toward the next descent. XXX

Isometric tactical combat on the grid
⛶

Tactical Squad Combat

Action points, directional cover, line-of-sight, overwatch and reaction fire on a fog-of-war grid. Every die roll resolved server-side. XXX

Cover · LoS · Overwatch
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⚔

Deep Loot & Weapons

A composable arsenal across 21 weapon sciences and 20 tiers — kinetic, energy, sonic, gravity and stranger things — with affixes, quality, and on-hit effects. XXX

Path-of-Exile-style depth
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◉

Permanent Consequences

32 unique operators with real histories. They level, they bond, they break — and when one falls, that loss is permanent. XXX

No respawns
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◈

A Living Geoscape

Hunt contacts across a collapsing world, manage research and funding, and spend the one thing you can't research more of: time on the doom clock. XXX

Strategy layer
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☣

Reality That Decays

The Bloom doesn't just kill — it unmakes. Reality frays at the edge of every engagement, and unprotected minds come apart. Holding coherence is the fight. XXX

Cosmic horror
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⛵

The Leviathan

A 3,000-metre mobile fortress and your home, carrying the fight from the ocean floor out into alien space across a five-act campaign. XXX

Base · Home · Weapon
Combat mechanics

Every operator, aware.

Every roll is computed server-side — no fudged hits, no take-backs. What you see on the grid is exactly what the engine resolved. XXX

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Cover & sight

Half and full cover, true line-of-sight, and a fog of war that only lifts where your operators can actually see. XXX

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Overwatch

Set a watch and punish movement — reaction fire triggers cell by cell as enemies cross your line. XXX

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Evasion

Range matters: fast targets slip shots at distance, but point-blank there is nowhere left to slip to. XXX

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Statuses & shields

Burn, freeze, decay, shred — 21 weapon sciences with on-hit effects, layered against energy shields that soak damage until they don't. XXX

Alien AI

Smart enemies — real battles.

Smart enemies are more fun. We're building the Bloom's AI on Goal-Oriented Action Planning — the approach behind F.E.A.R's legendary firefights, developed by Jeff Orkin at Monolith. XXX

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Natural behaviour

Every enemy has a role and instincts of its own — behaviour you can read, predict, and get punished for underestimating. XXX

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Tactical leaders

The Bloom is not cannon fodder. Its leaders are being built to coordinate — flank, suppress, and spend their own like a commander would. XXX

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Playbooks

No cheating, no omniscience: enemies will run battle-tested playbooks against you, with only the information they could actually have. XXX

The threat

The Bloom

When a Bloom wakes in the deep, it doesn't just kill — it unmakes.

The Bloom
The horror itself — nests of fused, blooming body-horror that spread across the seafloor and tear open zones where the rules of reality no longer hold. XXX
The Wrongness
How operators describe what the Bloom does to them: dead instruments, hallucinations, and the urge to turn a gun on your own squad. XXX
Coherence
The stability of mind and reality the Bloom decays. Hold it, or watch it come apart. It's what the title is about. XXX
Your fortress

The Leviathan

Between deployments you'll run the Leviathan — a mobile fortress and your home on a campaign that carries the fight from the ocean floor out into alien space. Tactical missions feed a geoscape of research, growth, and hard choices.

3,000 m
Length · largest ship ever built
600 m
Beam · twin dreadnought keels
280 m
Keel to top · ≈ Eiffel Tower
5 Acts
Earth → the edge of alien space
Be first in

Hold the line as
reality comes apart.

Join the waitlist for playtest invites, devlogs, and launch news. Wishlists are how we make launch day count — the Steam page goes live soon. XXX

No spam. Mission-critical updates only.
— or —
Wishlist on Steam SOON
From the deep

Devlogs & Dispatches

Built in the open. New dispatches on a steady cadence — combat, operators, and the road to the demo. XXX

Dispatch 001 · [STUB]

[STUB] Devlog title

[STUB] Placeholder dispatch summary — replace with the first real devlog when published.

Dispatch 002 · [STUB]

[STUB] Devlog title

[STUB] Placeholder dispatch summary — replace with the second real devlog when published.

Dispatch 003 · [STUB]

[STUB] Devlog title

[STUB] Placeholder dispatch summary — replace with the third real devlog when published.

The developer

One mind.
A 10-year perspective.

The developer

Coherence: Decay is built by a single developer with a clear goal: use everything the best games of the last four decades have invented, and make it into an epic, story-driven adventure.

The focus: characters. I believe the original feeling of getting attached to your people in UFO, X-COM: Terror from the Deep or Jagged Alliance is one of the most interesting parts of the genre. I want to explore that in depth — with 32 unique, custom-designed characters, fully written by me, without any AI (see the AI Development Policy) — who get to live a truly epic journey.

Know the feeling?

Coherence: Decay
is for you.

Turn-based squad tactics, the classic X-COM loop and its deep-sea chapter, and cosmic horror.

X-COM: Terror from the DeepIf you loved it

The deep-sea squad-tactics loop — cover, line-of-sight, overwatch, and a doom clock that never stops. XXX

XCOM 2If you loved it

Tense, modern turn-based combat and a strategy layer where every decision costs you something. XXX

Path of ExileIf you loved it

Build-defining loot, on-hit effects, and skill trees with the room to go endlessly deep. XXX

StarsectorIf you loved it

A living sandbox run by one developer for the long haul, deepened year after year. XXX

Jagged AllianceIf you loved it

Operators with real histories you grow attached to — and consequences when you lose them. XXX

Terraria · Dwarf FortressIf you loved them

Systems-driven depth, extended horizontally and vertically over a multi-year build. XXX

Two ways to grow

Research & Mythos.

Two deep trees, two different feelings of power — one for all of humanity, one for a single operator. A look at where it's heading. XXX

The Research Constellation

Civilization-level advances

Unlock power for your squad, your ship, and all of humanity. Deterministic, science-driven progression across a sparse grid you traverse over the whole campaign. XXX

The Mythos Tree

Operator-level mastery

A class-based skill system inspired deeply by Path of Exile. Shape each Anchor into something only they can be — and, late in the journey, something more than human. XXX

The long game · the vision

Humanity's epic journey —
beyond any expectations.

This is an epic, endlessly replayable story in the spirit of the Path of Exile Atlas and the Starsector sandbox universe — a campaign you can keep playing long after the credits would have rolled, growing run after run. XXX

It begins on a collapsing Earth and reaches all the way to the stars: from holding the line in our own oceans, to taking the war onto enemy ground, to pushing for the heart of the galaxy itself. XXX

Launch is the full Earth campaign — Act 1, complete in itself. The acts beyond it are the long-term roadmap this game is built toward, not a launch-day promise. XXX

Fight for Earth
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Act 1

Fight for Earth!

Hold the line on a collapsing world. Hunt the Bloom from the ocean floor and keep humanity coherent. XXX

Fight on their territory
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Act 3

Fight on Their Territory

Carry the war through the gateway. Strike the enemy on ground that was never meant for us. XXX

Dominate the galaxy
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Acts 4–5 · To the center of the Milky Way

Dominate the Galaxy

Take the fight to the stars. Push toward the galactic core — and whatever is waiting there. XXX

The box test — a sealed, warning-marked AEGIS crate alone in a dark ship room Box test
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Recruitment · Screening

Can you pass
the box test?

AEGIS is desperate to find those who can handle the box test.

Find out more
Enlist

When coherence decays,
only Anchors hold.

Join the waitlist for playtest invites and devlogs — and wishlist on Steam the moment the page is live. Wishlists are how we make launch day count. XXX

— and —
Wishlist on Steam
✦

On the waitlist? You're in the draw. XXX

When we launch, everyone on the waitlist is entered. One signup wins a unique, named in-game weapon designed to their brief. Two more are selected to help name an operator or shape a story event inside the game. XXX

[STUB] Full contest terms to follow · one entry per person · void where prohibited