Jeffrey Osthoff

The brand-new Cypher is the fast, flexible, and easy-to-GM RPG for any campaign you want to run. Let's take it to even more new places with cool options to customize your game and really make it soar in this short FLASH campaign!

An official OSE supplement of demons, cults, and dark magic.

The successor to AEG's award-winning RPG book "Toolbox" and platinum best seller "Ultimate Toolbox" - the World's Largest take on the Ultimate Toolbox is Over 400 pages of the best charts, tables, and seeds of gaming adventure.

The award-winning TTRPG perfect for forging the stories YOU want to play. Lightning-quick character generation. Super easy to GM. Unique and imaginative campaigns. And all the flexibility, story focus, and fast-paced play Cypher is famous for!

Drakonym is a tabletop RPG set in Akeroth, features players bonding with dragons. Narrative choices drive character & dragon development in a world rediscovering its secrets, with tactical combat, storytelling. Playable as a group or as a Solo RPG!

Blades in the Dark: Deep Cuts is a 128-page expansion for the Blades in the Dark roleplaying game — containing a treasure trove of lore, setting material, and alternative mechanics John Harper developed over the years for use in Blades campaigns.

The City State of the Invincible Overlord is an epic collection of campaign resources for both 5e and DCC RPG. More than 800 pages of material, multiple poster maps, and a city’s worth of gaming!

The World's Largest Dungeon is a 1,600+ page, four-book behemoth megadungeon. Experience the Guinness World Record-winning dungeon crawl like never before - fully updated to 5E of the Worlds Most Popular Roleplaying Game!

The 2006 retro-clone of first edition AD&D, rewritten and reorganized for 2025! OSRIC 3 is easier to learn, with more examples of play. This is the beginning of a new product line for Mythmere Games, to include adventure modules and much more!

OSR Booster is a 56 page zine with d20 weapons and d20 armor that will give your party an edge in brutal old school settings. High quality offset printing Spot gold foil cover Written and illustrated by Justin Sirois

A mega-adventure of primal horrors, mythic witches, and our deepest, most ancient fears that will push characters to their limits and force them to confront truths about themselves, forever changing them. Compatible with all campaigns and RPG systems!

A major update to Worldographer! UI improvements, more generators, better world generation, and so much more!

New sci-fi splatterpunk 3rd party adventures and expanded rules from the creators of Vast Grimm // Inspired and infected by Mörk Borg

Could your tabletop games use more exciting adventures in the wild? Join us! Endless Encounters: Wilderness is an encounter and adventure generator for 5th Edition D&D and Classic D&D (B/X, 1e, S&W, etc)!

Strange, dark times call for strange, dark heroes—and these three new titles for the Cypher System deliver! Plus great pledge options for gamers trying out the Cypher System for the first time.

Bring an end to the wrath of the evil sea goddess Elvirath in this fantasy adventure for the Cypher System.

The Cypher System is about to become your new favorite TTRPG. With a new Starter Set, a DELUXE Cypher System Rulebook, and two striking new genre books, this campaign has something for everyone—new fans and Cypher System veterans alike!

Journey through the depths of Ostoya in this massive 5th Edition Adventure spanning six premium hardcover books!

Make every encounter, adventure, and even campaign more engaging, memorable, and fun. From legendary D&D designer Monte Cook!