Cosmere RPG

The official RPG for Brandon Sanderson's Cosmere universe featuring Stormlight Archive and Mistborn settings. Uses a d20-based system with talent trees, skill-based magic, and a unique "plot die" that raises narrative stakes. Players can create Knights Radiant, Mistborn, or worldhoppers traversing multiple realms.

At-a-glance

Fantasy • Needs GM • 4/5 complexity • Medium prep

Rank #255 Top rated
Cosmere RPG

The Cosmere RPG brings Brandon Sanderson's interconnected fantasy universe to the tabletop, spanning the storm-swept world of Roshar (Stormlight Archive) and the ash-covered realm of Scadrial (Mistborn). Players inhabit a galaxy where unique magic systems operate on distinct worlds, connected by the mysterious Cognitive Realm that allows worldhopping between planets.

Theme and Setting

On Roshar, players can become Knights Radiant , forming bonds with spren to wield Shardblades and harness Stormlight. On Scadrial, characters might be Allomancers burning metals for power, Feruchemists storing attributes in metalminds, or Hemalurgists wielding stolen abilities.

How Play Feels

The setting embraces Sanderson's signature hard magic systems—powers with clear rules, costs, and limitations that drive storytelling. Core Mechanics The Cosmere RPG utilizes a familiar d20-based resolution system while introducing purpose-built innovations that distinguish it from traditional fantasy RPGs: The Plot Die A special d6 mechanic that activates during critical story moments.

What Makes It Distinct

When the GM calls to "raise the stakes," players roll the plot die alongside their d20. Results can grant Opportunities (resources for dramatic turns), introduce complications, or escalate the narrative tension.

Where It May Not Fit

You want a very light rules load You want the system to stay almost invisible at the table.

Decision guide

What this game is about

Key facts
Players
2-5 players + GM
Session
120-240 minutes
Prep
Medium
Play profile
Complexity
4/5
New GM Fit
2/5
Roleplay Focus
5/5
Combat Focus
3/5
Tactical Depth
3/5
Campaign Depth
3/5
Who it suits
Best for
Groups that want fantasy adventure with a clear play identityTables that enjoy tuning characters and expressing concepts mechanically
Avoid if
You want a very light rules loadYou want the system to stay almost invisible at the tableYou want a much breezier tone than this game is built to support

A strong fit for groups that want fantasy adventure with a clear play identity, with character Customization helping define the experience.

Agent data

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

Open agent JSON