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A portable, offline-first DM and worldbuilding tool. Build worlds, run sessions, share with others and play together, all in one app. License: CC BY-NC 4.0 · Free to use Everything core works **without an account**. You only need one to play online, publish to the marketplace, or download other users' content. /images/general-media/1791564204_7DEx9r3t.webp Worldbuilding - Era Timeline: Split your world's history into eras on a timeline bar and move between them. Each era keeps its own map, pins, nested location maps and day-by-day timeline pins linked to cards and sessions. You can show the same city before the war and after it. - Templates & Packages: Every world is built on a template (D&D 5e is built in) and pulls content from packages. A package is a bundle of cards you can install into any world, link to other packages, or share on the marketplace. Custom templates are coming. - Codex: Schema-driven cards for NPCs, monsters, spells, items, locations and more. Every reference is a tappable link. Pin cards to the top, preview any card with a long press, and search by name, tag, category or text. - World Map: Pins, grid and scale, drawing, fog of war, and nested maps you can walk into (districts, dungeons, taverns). - Mind Map: An infinite canvas with linked nodes, workspaces, freehand drawing and undo/redo. /images/general-media/1791564252_TB7zwrCp.webp Running the Session - Second Screen: Give the table its own view. Pop out a window onto a second monitor, cast to a TV or projector, or project into every connected player's app. You choose how battle maps, images, cards and PDFs go out. Fog of war and hidden tokens stay hidden. - Battle Map: The session screen *is* the map, with the encounter panel and event log on top. It has layers, fog of war, AoE templates, 5e diagonal rules, creature-sized tokens, shapes and text, a DM-only layer, hidden tokens, movement trails for the round, and two maps joined into one. - Combat Tracker: Initiative, HP (with hit-dice rolls), conditions, turn order and an event log. - 3D Dice: Dice roll across the screen with named styles. Skills and saving throws roll from the character sheet with one tap. - Soundpad: Layered ambience with gapless loops, fades and ready-made soundpacks. - PDF Library: PDFs kept inside the world, opened in tabs and shareable with players. /images/general-media/1791564292_BnuuXJTS.webp Characters - Full 5e rules: Species, class, subclass, background and feats fold into one sheet. Each sense, resistance, proficiency, trait and always-prepared spell shows where it came from. Also covers multiclassing, spell slots, class resources (Rage, Bardic Inspiration, sorcery points…), weapon mastery, and short and long rests. - Character Builder: Pick species, class, subclass, background, ability scores, skills, starting equipment and feats from the SRD and any installed pack. - Level-Up: HP, proficiency bonus and hit dice update automatically. ASIs, feats, subclass and spell picks wait as pending choices. /images/general-media/1791564330_JBRRDNZ4.webp Playing Online - Online worlds: Put a world, package or character online and it stays the same on every device you sign in on. Players see the pictures even when the DM is offline. - Players: Join with an invite code, claim a character, move your own token on your turn, and send dice rolls to the DM's log. Shared cards update when the DM edits them. - .dmtz files: Export a world, package or character to one file and import it anywhere. No account or network needed. Content - SRD 5.2.1: Built in and works offline. - 19 one-tap packs: Tome of Beasts (1–3, 2023), Creature Codex, Monstrous Menagerie, Black Flag SRD, Deep Magic, Tome of Heroes, Vault of Magic, Tal'Dorei and more. - Ready-made worlds: 99 Devils of Uzrah's Palace (Shadowdark), Army of the Damned, The Cold Bounty, and soon our own campaign Aegis Act . - Marketplace: Publish worlds, templates, packages and characters as versioned snapshots with content previews. - Social: Profiles, follows, an activity feed, direct and group chats, and game listings with applications.

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.

Roll20 is the most widely used browser based virtual tabletop in the world, launched in 2012 following a successful Kickstarter campaign. Developed by Riley Miller, Nolan T. Jones, and Richard Zayas, it was designed to break down the barriers to tabletop gaming by requiring zero installation and offering a robust free to play tier. It remains the industry leader in total user base, hosting millions of games across nearly every imaginable tabletop system. Description Roll20 is the "everyman" of virtual tabletops, prioritizing accessibility and ease of use. Because it runs entirely in the cloud, players and Game Masters can start a session in seconds from any modern web browser. It features an integrated marketplace where users can purchase official rulebooks, adventures, and art packs that integrate directly into their campaigns. While it offers advanced features like dynamic lighting, its primary appeal is its massive community and the simplicity of its "pick up and play" nature. System Overview & Key Features No Installation Required Unlike many of its competitors, Roll20 requires no software downloads or server configuration. The Game Master simply creates a room on the website and shares a link. This makes it the ideal choice for groups with varying levels of technical expertise. Integrated Character Sheets Roll20 features thousands of community and official character sheets that handle the math for you. Clicking an attribute or a weapon on your sheet automatically sends the roll to the chat window, applying modifiers and calculating critical hits instantly. The Roll20 Marketplace The platform boasts the largest digital storefront in the industry. You can buy modules for D&D, Pathfinder, Call of Cthulhu, and more, which come pre loaded with maps, tokens, and journals, drastically reducing a Game Master's preparation time. Dynamic Lighting and Layering Subscribers gain access to a powerful lighting system that restricts what players can see based on their character's line of sight. The Game Master can easily manage different layers for maps, tokens, and hidden notes that only they can see. Built in Video and Voice Roll20 includes its own integrated WebRTC video and voice chat system, allowing groups to see and hear each other without needing to run third party software like Discord alongside their game window. Jumpgate Technology Introduced in 2024 and 2025, the "Jumpgate" update overhauled the core engine to provide a much smoother, high performance experience. It improved frame rates, reduced loading times, and modernized the interface to compete with newer, hardware accelerated platforms. Additional links roll20.net - Official Roll20 website and Virtual Tabletop marketplace.roll20.net - Official Roll20 Marketplace for assets and modules

Shadow of the Demon Lord is a grim dark-fantasy tabletop roleplaying game set during the last, doomed years before an apocalypse, designed by Robert J. Schwalb and published by his own studio, Schwalb Entertainment, in 2015 following a Kickstarter campaign.  It builds a d20-based system deliberately stripped of the modifier-stacking common to games in its weight class, replacing most situational bonuses and penalties with a single abstracted mechanic. Schwalb later returned to the same core system for a lighter, more traditional-fantasy spinoff, Shadow of the Weird Wizard, released via Kickstarter in 2023. Description Characters begin as ordinary commoners rather than destined heroes, in a world where the Demon Lord's return is already underway and survival - not glory - is the realistic goal of most adventures. The Game Master (GM) runs a setting that leans hard into body horror, corruption, and creeping dread, and the game states its demands plainly.  Characters can and do die, sanity can crack under the weight of what they witness, and doing what's necessary to survive can leave a permanent, mechanical stain on a character's soul. It's built for a table that wants D&D-adjacent fantasy combat without D&D's heroic framing - closer in spirit to grimdark fiction than epic fantasy, with character death treated as a real and fairly common outcome rather than an exception.

Ars Magica is a troupe-style tabletop roleplaying game about wizards and their allies in Mythic Europe, a version of medieval Europe around the year 1200 in which folklore and religious belief are literally true. It was created by Jonathan Tweet and Mark Rein-Hagen and first published by Lion Rampant in 1987.  The Fifth Edition, written by David Chart and published by Atlas Games in 2004, won the Origins Award for Best Role Playing Game of 2004 and took Gold for Best Rules at the 2005 ENnie Awards. Atlas Games has since released the Definitive Edition, a revised and expanded version of the Fifth Edition with over 600 pages, new art and a new layout. It was funded on BackerKit in 2024 and shipped to backers in 2026, and it keeps the Fifth Edition rules. The Fifth Edition directly evolved from Ars Magica Fourth Edition (Atlas Games, 1996), which in turn descends from the original 1987 game. Description Players portray magi, powerful wizards of the Order of Hermes, alongside companions, skilled specialists who go out into the world, and grogs, the hired hands and retainers who do the dangerous legwork. Most players run one of each, and the group's real shared character is the covenant, the wizards' home base, often built on a place of power.  A Game Master, called the Storyguide (SG), frames the stories, which can span decades or centuries of in-game time. The game asks a table to think in long arcs. Magi spend most of their time studying and working in a laboratory, and many of the best stories come from what that research costs the covenant and its neighbors. It also asks for a fair amount of reading and bookkeeping: the magic system rewards players who plan spells and lab projects, and a character's progress is measured in seasons rather than adventures.

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.