# 334 Cepheus

334 Cepheus is a standalone 2D6 science-fiction ruleset and a set of supplements. It is a toolkit: lifepath characters, skills, personal combat, gear, psionics, starships, trade, and world generation, plus later books for machines, aliens, horror, ship modules, cities, work, and small-unit fighting.

This folder is the **334digital reading package** (HTML + Markdown). Rules text was not rewritten for packaging. The Open Game License and Section 15 copyright notice are in [`LICENSE.txt`](LICENSE.txt) and [`license/334_Cepheus_License.html`](license/334_Cepheus_License.html). Provenance is in [`SOURCE.md`](SOURCE.md). Packaging notes are in [`PACKAGING.md`](PACKAGING.md).

**Live URL:** https://334digital.com/cepheus/

**Companion on this site:** the clean-room Cepheus Engine SRD Open Game Content is published separately as [OpenSRD](https://334digital.com/opensrd/). 334 Cepheus is a separate ruleset; it does not copy Traveller proprietary SRD text and does not replace OpenSRD.

## How to read

Start at [`index.html`](index.html) (or this site’s `/cepheus/` contents page). Read the core in order, then any supplement you need. Supplements assume the core rules.

## Core

| File | Contents |
| --- | --- |
| [`core/00-introduction.html`](core/00-introduction.html) | What the game is |
| [`core/01-core-mechanics.html`](core/01-core-mechanics.html) | Part 1. 2D6 resolution, difficulty, Boon/Bane, Effect |
| [`core/02-character-creation.html`](core/02-character-creation.html) | Part 2. Lifepath, homeworld, careers, aging, mustering out |
| [`core/03-skills-and-tasks.html`](core/03-skills-and-tasks.html) | Part 3. Broad and narrow skills, teamwork, advancement |
| [`core/04-personal-combat.html`](core/04-personal-combat.html) | Part 4. Initiative, Stamina and Lifeblood, armor, healing |
| [`core/05-equipment-and-gear.html`](core/05-equipment-and-gear.html) | Part 5. Weapons, armor, gear, encumbrance, tech levels |
| [`core/06-psionics.html`](core/06-psionics.html) | Part 6. PSI, powers, Strain, Burn |
| [`core/07-starships-and-space-combat.html`](core/07-starships-and-space-combat.html) | Part 7. Ship cards, crew actions, jump, ship economics |
| [`core/08-trade-and-economy.html`](core/08-trade-and-economy.html) | Part 8. Legwork, cargo, passengers, freight, smuggling |
| [`core/09-world-and-adventure-generation.html`](core/09-world-and-adventure-generation.html) | Part 9. UWP, tags, encounters, 5-node missions |
| [`core/10-appendices.html`](core/10-appendices.html) | Part 10. Quick reference, NPCs, conversion, character sheet |

## Supplements

| File | Contents |
| --- | --- |
| [`supplements/synthetics-minds-and-machines.html`](supplements/synthetics-minds-and-machines.html) | AI characters, robots, computers, intrusion |
| [`supplements/xenosophonts.html`](supplements/xenosophonts.html) | Alien creation, playable species, liaison rules |
| [`supplements/indifferent-dark.html`](supplements/indifferent-dark.html) | Phenomena, culture, and the Insight / Dissonance ledger |
| [`supplements/psionics-and-dread.html`](supplements/psionics-and-dread.html) | Later focused book on psionics and the Indifferent Dark |
| [`supplements/modular-starcraft.html`](supplements/modular-starcraft.html) | Slot-based ship frames, modules, costs, and sample ships |
| [`supplements/chrome-and-static.html`](supplements/chrome-and-static.html) | Sprawl, the Mesh, cyberware, urban and information war |
| [`supplements/asymmetric.html`](supplements/asymmetric.html) | Militia, mercenaries, counter-terrorism, small-unit combat |
| [`supplements/weight-of-stars.html`](supplements/weight-of-stars.html) | Working-class jobs, housing, wages, and diaspora life |
| [`supplements/adventure-template.html`](supplements/adventure-template.html) | Fill-in adventure template with safety-tool boilerplate |

## Source repository

Canonical Markdown and the full extraction archive live in the GitHub repository [peterwjones334/2D6OGLSF](https://github.com/peterwjones334/2D6OGLSF) under `334-cepheus/`. This site package omits the large raw share transcript; see SOURCE.md.