Mneme Cepheus Engine Rules

The Mneme Cepheus Engine Rules are a streamlined variant of the Cepheus Engine System Reference Document (SRD), optimized for automation, clarity, and ease of use in character generation and gameplay.

Overview

The Mneme variant introduces quality-of-life improvements and streamlined mechanics compared to the Rules-As-Written (RAW) from the Cepheus Engine SRD. These adjustments maintain full compatibility with core Cepheus Engine gameplay while improving pacing, reducing redundancy, and simplifying bookkeeping.

Key Changes from RAW

Rolls Simplified: All core rolls (Qualification, Survival, Advancement) use a unified 2D6 vs. Difficulty system with variable target numbers instead of static 8.
Re-Enlistment Simplified: No separate re-enlistment roll required. Players may choose to re-enlist freely between terms.
Aging and Anagathics Streamlined: Aging begins at Term 5 using Core Task Resolution (2D6 + END DM vs. Difficulty Terms+1). Anagathics simplified to 100,000 Cr per term, max SOC-7 uses.
Draft Careers Changed: Draft represents forced/dragged-into careers (Barbarian, Belter, Colonist, Mercenary, Pirate, Rogue) rather than government conscription.
All Careers Have Advancement: Previously advancement-less careers (Athlete, Hunter, Scout, etc.) now have ranks.
Drifter Career Adjustments: Automatic qualification, no retirement benefits.

Core Rule Chapters

Complete reference chapters extracted from the Cepheus Engine SRD, with Mneme quick fixes applied:

Content Statistics

Mneme Cepheus Engine Core Rules Summary
Chapter	Lines	Size	Key Features
Chapter 1	974	56KB	Character Creation (10 tables)
Chapter 2	809	36KB	Skills + Space Combat skill clarifications
Chapter 3	902	32KB	Psionics (talents, powers, training)
Chapter 4	2,474	80KB	Equipment (21 tables)
Chapter 6	490	28KB	Off-World Travel (Jump mechanics)
Chapter 7	216	12KB	Trade and Commerce
Chapter 8	1,195	84KB	Ship Design (23 sample ships)
Total	7,060	328KB	7 complete chapters

Chapter Directory

! Chapter ! Title ! Description ! Key Tables |- | Chapter 1 | Character Creation | Complete character generation rules including characteristics, careers, aging, and mustering out with Mneme quick fixes applied | 10 detailed tables: Characteristics, Modifiers, Homeworld Skills, Draft, Mishaps, Injury, Medical Bills, Aging, Retirement Pay |- | Chapter 2 | Skills | Skill check mechanics, task resolution format, and complete skills list | Task resolution system, difficulty modifiers |- | Chapter 3 | Psionics | Psionic talents, powers, training, and psionic strength rules | Psionic training table, talent descriptions |- | Chapter 4 | Equipment | Technology levels, weapons, armor, gear, vehicles, and starships | 21 detailed tables including equipment lists, vehicle specs, starship specs |}

Mneme Quick Fixes Summary

Task Resolution

RAW: Roll 2D6 + DM vs. static 8

Mneme Quick Fix: Roll 2D6 + DM vs. variable Difficulty (already used in Qualification, Survival, Commission, Advancement)

Advancement

RAW: Separate Commission and Advancement rolls

Mneme Quick Fix: Survival Effect 4+ = Advancement. No separate rolls. Even ranks increase SOC by 1.

Anagathics

RAW: Declare before Survival, triggers second Survival roll, grants cumulative bonuses

Mneme Quick Fix: Spend 100,000 Cr per use, skip aging roll, max uses = SOC − 7

Draft Table

RAW (1d6): Aerospace, Marine, Maritime, Navy, Scout, Surface Defense

Mneme Quick Fix (1d6): Barbarian, Belter, Colonist, Mercenary, Pirate, Rogue

Related Mneme Projects

Mneme Character Creation - Interactive character generator implementation
Mneme World Generator - Star system and world generation
Mneme Ship and Vehicle Design - Ship construction and vehicle design
SOC Scale Economic Implications - Economic scale of 300 years of growth

Reference Materials

Cepheus Engine SRD (DriveThruRPG)
Cepheus Engine: 6 Combat Career Cards (PWYW)
Cepheus Engine: 24 Career Cards

License

Mneme Cepheus Engine uses the OGL (Open Game License) and/or CC BY‑SA to maintain compatibility with the Cepheus Engine SRD.