The Mutant Epoch

The Mutant Epoch is a rules-lite post-apocalyptic RPG using the Outland System. Players lead excavation teams into ruined cities and toxic wastelands, battling mutants and raiders while scavenging for ancient technology. Percentile-based mechanics, extensive random tables, and lavish illustrations support emergent sandbox survival.

At-a-glance

Post-apocalyptic sandbox • Percentile (d100) based • 3–6 + GM • Low prep • Rules-lite to medium • 2–4h sessions

The Mutant Epoch

The Mutant Epoch takes place centuries after humanity's fall, where survivors called Excavators venture from fortified settlements into the ruins of the Ancients. The world is a dangerous patchwork of twisted forests, junk-strewn wastelands, and radioactive ruins.

Theme and Setting

Players confront freakish mutants alongside hostile raiders and environmental hazards. The Outland System uses percentile (d100) dice for combat, task resolution, and countless tables.

How Play Feels

Combat offers simple and complex options with modifiers for cover, moving targets, and called shots. Character creation involves rolling on extensive mutation tables and defining roles within excavation teams.

What Makes It Distinct

Distinctive black-and-white illustrations by William McAusland give the game a unique visual identity. Extensive random generation tools support true sandbox play where GMs improvise sessions from dice rolls.

Where It May Not Fit

You mainly want short standalone sessions with minimal carryover You want a cleaner, less pressured world state.

Decision guide

What this game is about

Key facts
Players
3-6 players + GM
Session
120-240 minutes
Prep
Low
Play profile
Complexity
3/5
New GM Fit
4/5
Roleplay Focus
3/5
Combat Focus
2/5
Tactical Depth
2/5
Campaign Depth
5/5
Who it suits
Best for
Groups that want life after collapse to drive the tone and choicesTables that want quick onboarding and low mechanical dragLong-form campaigns with room for the table to build momentum
Avoid if
You mainly want short standalone sessions with minimal carryoverYou want a cleaner, less pressured world stateYou want the system to stay almost invisible at the table

A strong fit for groups that want life after collapse to drive the tone and choices, with rules Lite helping define the experience.

Agent data

Structured data and an explicit decision profile JSON document are available for remote agents.

Open agent JSON