Tools, adventures & homebrew
Material made for our own table and shared for yours — from interactive Session 0 Trackers to original adventures, maps, creatures and player options.
Interactive tools
Keep every choice, point and emerging character path in one place while you run the Cosmere RPG Session 0 Adventures.
Designed for the unofficial Mistborn Session 0 Adventure. Track up to six players choices of Heroic Paths, Metalborn properties, shared resources and the Way Out endeavour.
Guide your table through the A Second Chance Session 0 adventure, with character paths, Metalborn properties and shared resources in one place.
Designed for the official Stormlight Session 0 Adventure. Track up to six players choices of Heroic Paths, Radiant Orders, shared resources and the Survive the Night endeavour.
Original material
Owen's custom rules for Cosmere and D&D, developed through campaigns played both on and off stream and gathered here for anyone to use.
Character creation
Build the party through an in-character job interview that connects names, classes, backgrounds and backstories.
Brutal Combat
Make critical hits reliably spectacular by adding the maximum possible dice result to the damage rolled.
Better Ability checks
Let players choose and justify the ability that best reflects how their character approaches a tool check.
Large-scale combat
Run clashes between vast forces using Heroes, Heroic Allies, Standard Units, Combat Power and contested Battle Checks.
Consequences of Horror
Track mental resilience through a custom Sanity score, escalating madness effects and methods of recovery.
Too much of a bad thing
Model addictive substances with escalating Constitution saves, three addiction levels and meaningful withdrawal effects.
Combat consequences
Give dropping to zero hit points lasting weight with Constitution saves and injury tables tailored to the damage type.
Downtime
A Nostea-flavoured table of one hundred chaotic consequences for the morning after an adventurous night out.
Custom rules index
Open the complete Custom Rules page for every rule, example and roll table.
The Session 0 trackers are unofficial fan-made aids. The Cosmere RPG and related names and marks belong to their respective owners. The D&D homebrew is unofficial fan content and is not approved or endorsed by Wizards of the Coast.