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Soulslike OSR TTRPG

Build out a family tree in this roleplaying game system

A setting-agnostic TTRPG mechanics engine inspired by the Kids on Bikes system

archetypal exploration in a diceless, GM-less system

d12 system for solo and GMless TTRPGs

A "New Weird" Rules-lite TTRPG by Ren Aosaka

Lightweight, character-driven RPG

An ultralight system for creating highly improvisational role-playing games.

A simple system for flexible storytelling with Spiral Dice

The Official License and Guide for Spindlewheel hacks

Open TTRPG Engine

System Reference Document

A system for creating TTRPGs around performances

Writing and journaling game system. Système de création de jeu d'écriture et de journaling

A game creation toolkit

An SRD for games about identity, gender, (super)power and resistance

Space role-playing game easy to enter with no level limit.

The system behind HELLGUTS and HELLDROPPERS

A printable fortune teller game & SRD for making your own game where you get bees & secret prizes!

A system for creating listening games

an SRD for high octane one page oneshots

A system reference document to enable any designer to create story games based on my 'retrospective' game system.

A narrative roleplaying framework!

Make a game in 3 minutes

An SRD for probability building diceless gaming!

A blackjack inspired one page RPG bundle, easily hacked.

Roll-to-the-middle TTRPG game system

A template for making third-party content for His Majesty the Worm

Be inspired and make a game that is Crafted in a Shell

System reference document, license, and design guidance for ONLC system