# Cthulhu: Death May Die Dice Roller

> Dice simulator for Cthulhu: Death May Die. Roll black and green dice with Success, Insanity Tentacle, and Elder Sign calculations.

- Page: https://www.boardgamesbot.com/tools/dice-roller/cthulhu-death-may-die
- Other language: https://www.boardgamesbot.com/ferramentas/dados/cthulhu-death-may-die
- All tools: https://www.boardgamesbot.com/tools

## How to use

1. **Select your dice** — Click or tap on D4, D6, D8, D10, D12, D20, D100, or themed game icons to add them to your dice tray.
2. **Set modifiers** — Add numerical bonuses or penalties (+2, -1) to match your tabletop RPG rules.
3. **Roll or shake your phone** — Tap the Roll button or shake your smartphone to cast the dice with realistic physics across the tray!
4. **Instant automatic result** — The physics engine detects top faces, sums polyhedral totals, and counts thematic damage or successes in real time.

## Features

- **Realistic 3D Physics & PBR Shading** — Runs in 60 FPS WebGL via Three.js and Cannon.js with studio lighting, shadows, and true rigid body bounces.
- **Smartphone Shake to Roll** — Use your phone accelerometer to roll dice by shaking the device in your hand like a real dice cup.
- **Game-Specific Themed Dice** — Compatible face distributions for Zombicide, Imperial Assault, Nemesis, Cthulhu: Death May Die, Mansions of Madness 2e, and more.
- **Procedural Web Audio & Haptics** — Synthesized collision audio and tactile vibration pulses on impact without heavy media downloads.

## Dice — Cthulhu: Death May Die

- **Standard dice**: hit, miss and tentacle faces
- **Tentacle**: negative result, usually tied to madness
- **Bonus dice**: added by abilities and equipment
- **Elder sign**: special result used by certain abilities

## More dice also means more risk

Death May Die inverts the usual logic of stacking dice. Abilities and equipment let you roll more dice, which raises the chance of hitting — but also raises the chance of rolling a tentacle, which pushes the investigator closer to madness.

That makes the question of how many dice to roll a real choice rather than an obvious optimisation. Seeing individual results separated from the total, as this tool shows, helps make the cost of each extra die visible.

Madness is not purely a penalty: the game uses the escalation as part of its narrative and some abilities depend on it. Even so, crossing the threshold has a hard consequence, which is what the tentacle count tracks.

## Frequently asked questions

### What happens when rolling a Tentacle symbol in Death May Die?

Each tentacle rolled advances your investigator 1 step along the Insanity track, unlocking skill tiers until total madness.

### What are Elder Signs used for?

Elder Signs trigger special abilities on investigator character sheets, such as bonus attacks, healing, or rerolls.

### What is the difference between the black and green dice?

They have different distributions. The standard black die has 2 Success faces, 1 Success + Tentacle, 1 Elder Sign, 1 Tentacle, and 1 Blank. The green bonus die has 2 Success faces, 1 Success + Elder Sign, 1 Elder Sign, and 2 Blanks, with no Tentacles.

### What does the tentacle symbol mean?

It is the die's negative result, normally tied to advancing the investigator's madness. The more dice you roll, the more likely it shows up.

### Is it always worth rolling more dice?

Not always. More dice raise the chance of hitting and of tentacles alike, so the decision depends on how close to madness the investigator is.

## Dedicated per-game pages

- [Zombicide](https://www.boardgamesbot.com/tools/dice-roller/zombicide)
- [Star Wars: Imperial Assault](https://www.boardgamesbot.com/tools/dice-roller/star-wars-imperial-assault)
- [Nemesis](https://www.boardgamesbot.com/tools/dice-roller/nemesis)
- [Cthulhu: Death May Die](https://www.boardgamesbot.com/tools/dice-roller/cthulhu-death-may-die)
- [Mansions of Madness 2e](https://www.boardgamesbot.com/tools/dice-roller/mansions-of-madness)