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Cult of the Yellow King

A cosmic horror idle game where you build the Yellow King’s cult, spread his living mold, and click yourself hollow. Memory by memory. Scream by silent scream, as the sky blooms with eyes watching your beautiful undoing.

Steam Page
Release
December 12, 2025
233 days ago
Steam Reviews
Very Positive123 reviews82.1%

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About the Game

Build your cult. Spread the mold. Watch the sky bloom with yellow eyes, click to decay beautifully. 

Reality is a thin scab over the void.
It festers.

A yellow stain blooms at the edge of your vision.
Alive. Hungry.

It whispers your name in the language of rot.
You obey.

Cult of the Yellow King is a cosmic horror idle game where you command a cult to summon the Yellow King.

With every click, you surrender another fragment of yourself: memory, tongue, flesh. Each prayer gnaws at your humanity.
Each sacrifice bleeds you hollow.

This is not a path to power, it is a descent into beautiful oblivion.

IDLE MADNESS

Generators whisper secrets that scar.
Upgrades demand teeth, skin, sanity.

A NARRATIVE OF UNMAKING

Unlock fragmented tales of dread as you progress.
Each milestone a fresh horror.
Your skin crawls. Walls grow eyes.
The sky bleeds yellow.

PRESTIGE THROUGH DAMNATION

Ascend by shattering your progress. 
Choose an elder curse. Begin again, deeper in devotion.

SOUNDS OF THE VOID

Black metal dirges by Merhum.
Hymns for the end of reason.

THE KING AWAITS

The mold has rooted in your throat.
The stars blink shut.
He approaches…

Click, and let the beautiful decay consume you.