Dark Dice

Dark Dice is a dice-driven investigation game set across the Cthulhu Mythos. You recruit investigators at your Society's HQ and send them into 32 standalone cases inspired by works and settings including The Mountains of Madness, The Colour Out of Space, The Dunwich Horror and Innsmouth. Each case is a self-contained investigation: once an investigator crosses its threshold, they cannot turn back until they escape or fall.

Investigators and checks

Each check uses Cthulhu-style tabletop role-playing stats, with outcomes shaped by dice and skills rather than a single scripted route or ending. You can choose from eight professions: Professor, Antiquarian, Patrolman, Athlete, Actor, Politician, Private Investigator and Doctor. A short in-fiction psychology quiz reads your answers and matches you to the archetype your choices point to; each profession has its own skill spread, Credit Rating and personal hook into the case.

Your choices erode an investigator's sanity, and a broken investigator plays differently from a sharp one. There is no reloading past a bad roll: if an investigator falls, their story ends.

Investigation team

Between cases, you build a roster at the Investigation Team HQ, gather Ancient Knowledge and Merit, and equip your team from a growing pool of items.

Cases of Herbert West

The complete Cases of Herbert West collection, with all six entries from “From the Dark” through its finale, The Tomb-Legions, is included. These cases use fewer puzzles about collecting key items to open vault doors and focus more on mutually exclusive branching routes. Named characters can become rivals or allies depending on how you play, and each case has multiple distinct endings designed for replay.

Play options

Dark Dice is an offline, single-player game and does not require an internet connection. Steam Achievements and Cloud saves are optional extras that do not gate play. The game supports English, Traditional Chinese, Simplified Chinese and Japanese.