› Cult of the Yellow King

what is Cult of the Yellow King?

Cult of the Yellow King is a cosmic horror idle game where you build a cult, spread a living mold, and sacrifice fragments of yourself to summon an eldritch entity.

Command a cult to summon the Yellow King by clicking to spread mold and decay. Each action costs pieces of your humanity while unlocking dark narrative fragments. The game features prestige through curses and atmospheric black metal music as you descend into cosmic horror.

It sits in the Clicker / Idle / Numbers / Management / Narrative corner of the genre. Like most idle games it runs on a simple loop — earn, reinvest, automate — but the depth is in how long that loop keeps unfolding. Expect to check in, make a few decisions, and watch the numbers climb whether you're at the keyboard or not.

New to incrementals? Read our beginner's guide first, or just hit play — these games are built to teach themselves.