LUMEN
Build action packed, illuminated RPGs
Caltrop Core v1.2 SRD
An Introductory TTRPG Design SRD
Push SRD
A story-first, push-your-luck system for your games
24XX
A lo-fi sci-fi RPG SRD
Wretched & Alone SRD
An SRD for creating journaling games.
Carta SRD
A Toolkit For Creating Single-player Exploration Games
Breathless - System Reference Document
An SRD for creating Breathless games.
Iron Core
Iron Core is a rich dice mechanic for you to build your own games.
Charge SRD
An SRD to make action packed RPGs with forward momentum.
Second Guess System SRD
An SRD for one page solo TTRPGs.
The Goblin Pulls Out A Gun - A TTRPG Tech Pack
A TTRPG Tech Pack for a GMless Opposed Dice Pool System
Firelights Creator Kit and SRD
Create your own content based on Firelights
Together We Go Design Kit
Third Party License Design Kit & SRD for Down We Go
WuDe - The Five Powers SRD
A setting agnostic Cooperative Storytelling Game + SRD
Dash - A Charge Condensed Game
A print friendly & condensed version of Charge.
Harmony Drive
An SRD for building TTRPGs full of self-expression, teamwork, and difficult choices.
BFB SRD
A Systems Reference Document for Beak, Feather, & Bone
Hints and Hijinx
The solo mystery game system
WORLD ENGINE SRD
DIY game template SRD for a full simple 2d6 RPG, with nods to 24XX and What's so cool....?
Guided by the Sun SRD
An SRD for creating Guided by the Sun games
Aspire SRD
An SRD for creating narrative TTRPGs with cards, dice, and dramatic turning points.
Four Points RPG System SRD
System Reference Document for the Four Points RPG System
RISE
Evolution in game design
Threads of Lachesis SRD
Create detailed branched random event generators and games that use a single roll.