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Codex Cryptica is an AI-assisted worldbuilding and campaign management tool built around a living knowledge graph instead of a folder of loose documents. Every character, faction, location, and event you create becomes a linked entity, so your world stays connected and explorable as it grows. Genre-agnostic across fantasy, sci-fi, cyberpunk, horror, post-apocalyptic, western, steampunk, and more.

One Realm is an AI-assisted campaign workspace and virtual tabletop built for groups that want to play tomorrow—not spend the week preparing. It turns adventures, source material, and campaign notes into an organized, playable world, helping GMs complete work that might otherwise take hours or days in a matter of minutes. Characters, locations, encounters, maps, relationships, and story events are automatically organized and connected. From there, the GM can prepare scenes, create artwork, manage characters, and run the game through the integrated virtual tabletop. Because everything shares the same campaign context, preparation flows directly into play without rebuilding the session across multiple tools.

Hedron is a one-stop shop for everything TTRPG. Design and play entirely new TTRPGs, build robust worlds for your home games, and connect with your community – sharing your lore, worldbuilding, homebrew, and other creations! Links projecthedron.com - Official website discord.gg - Discord server reddit.com - Hedron subreddit

Conan 2d20 or "Conan: Adventures in an Age Undreamed Of", is a low-magic, high-action, fantasy roleplaying game set millennia ago, in the Hyborian Age. Immersed in an exotic land, strewn with ancient ruins, Stygian jungles and frozen wastes - where the heroes are daring, the treasures fleeting and the horrors Lovecraftian. Magic is shunned (but present nonetheless) and sorcerers are vilified; their dark machinations and obscene rituals have earned them fearful reputations and, often as not, a swift burning at the stake. Description The players can create competent and cunning characters from the start (best done with the online character generator - below) and immerse themselves in the joy of battle, tactical play and clever use of the environment. Teamwork is strongly encourage via archetypal characters, powerful talents and the use of shared Momentum and Doom resources, that can be used to spectacular effect or perilous misadventure.  System Overview & Key Features Momentum and Doom points are shared resources that accumulate during action scenes and battles. They are spent to activate powerful talents and abilities, which allow the characters to perform outrageous feats and spectacular displays - or imperil them just when they thought they were safe. Displays are a methods of intimidation, varying techniques that enable a character to demoralise their foes and strike fear into the hearts of man and beast alike. Win the war before it starts! Wounds and healing mechanics that allow character to shrug off scrapes but still significantly suffer from serious injuries until healed. Skills and talents related to them that cater for most possible situations and allow for daring escapades and mighty battles. Additional links modiphius.net - Official storefront and support page for the 2d20 system catalog https://pulp-lit.com/270.htmlpulp-lit.com - Robert E. Howard's Conan the Cimmerian Barbarian

The campaign starts with a group of ordinary fantasy tavern workers who win their workplace lottery. Unfortunately, the prize isn't money. They've won a place in a televised dungeon-crawling competition run by a ridiculously powerful interplanetary corporation. The show is intended to be a mixture of Dungeon World, fantasy workplace comedy, corporate satire, sci-fi/fantasy and a televised death game.

Old-School Essentials is a Dungeons & Dragons B/X retroclone designed by Gavin Norman and published by his own studio, Necrotic Gnome, first released in 2019. It doesn't reinvent the 1981 Basic/Expert D&D rules so much as reorganize them: rather than hunting across four different chapters just to build an elf character, every rule on a given topic now lives on a single two-page spread, with modern layout and clarity layered over mechanics that are otherwise untouched. Since launch it's become something close to the flagship rulebook of the Old School Renaissance - clean enough to hand a brand-new player, and 100% compatible with four decades of B/X-era modules and third-party adventures.