GM-Copilot Studios: The Masterwork Engine

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.

Foundry VTT is a self-hosted, modern virtual tabletop application that revolutionized the digital RPG space upon its release in 2020. Developed by Andrew Clayton, it recently celebrated its five-year anniversary with the launch of Version 13. Unlike its subscription-based competitors, Foundry provides a powerful, high-performance environment that runs in a web browser while giving the Game Master total control over their data and hosting. It is widely considered the "Gold Standard" for power users and tactical GMs. Descripion Foundry VTT is built on modern web technologies (Node.js and WebGL), allowing for hardware-accelerated visuals that outclass almost any other browser-based platform. It is a "buy-once, own-forever" product where the GM hosts the server locally or via a cloud service, and players connect for free through their browser. Its true strength lies in its modularity; with thousands of community-made modules, a GM can transform the software from a simple dice roller into a fully automated, cinematic video-game-like experience.

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.

Novissa Spola is a tabletop tactical RPG being developed for VR, mixed reality, and PC. Inspired by classic tactical RPGs and the physical experience of playing around a tabletop, Novissa Spola combines strategic turn-based combat, character building, exploration, and a fantasy campaign designed to be played solo or with friends. The game is currently in development, but a playable demo is already available. The demo gives you a chance to experience the tabletop-style gameplay and tactical combat that form the foundation of Novissa Spola. Visit the official website www.honestcabbage.com to play the demo, view the trailer, and stay up to date on development. Development is ongoing, with the full game planned to expand the campaign, characters, world, combat systems, and cooperative experience.

Codex is a browser-based character sheet and encounter tracker for d20 games using the 3.5 SRD, published under the Open Game License v1.0a. It runs as a progressive web app: it installs on a phone like a native app, works with no connection, and pushes any pending changes once the network returns. The design goal is that the sheet does the arithmetic a table normally does by hand. Underneath the interface sits a full implementation of the 3.5 ruleset - typed bonus stacking, iterative base attack bonuses, multiclassing, spell slots derived per ability score, two-weapon fighting, armour check penalties, encumbrance, size modifiers and confirmable criticals - rather than a set of fields the player has to total up. Every value on the sheet is derived, and clicking any ability, save, skill or weapon rolls it with the correct modifier already applied. Codex also checks the character against the rules and says so when something does not add up. If a sheet ends up with more skill ranks than the character's level allows, more feats than available slots, spells prepared that the caster can no longer cast, a cleric missing his two domains or a paladin who has stopped being Lawful Good, the sheet reports it and links to the tab where it is fixed. It never edits the character on its own - the correction is always the player's decision. The Encounter tab turns the same engine into a combat tracker: initiative order, a bestiary of 466 SRD creatures, per-combatant conditions, a battle grid with flanking, reach and range increments, and an encounter difficulty estimator. Encounters can be run solo or as a shared room, where a server validates every action rather than trusting the client. Characters can be built by hand or generated. Thirty-two archetype templates - twenty of them multiclass - produce a complete, rules-legal character at any level, with equipment bought from the wealth the SRD grants for that level and restricted to what the character is actually proficient with. Codex is bilingual (English and Spanish), free to use, and requires no installation or account to try.

Set in the homebrew world of Cabraxus, follow our daring heroes as they face wicked villains, encounter monstrous creatures and uncover ancient mysteries on their adventures across the world! Of Moons & Men is a Pathfinder 2nd edition campaign from the Arcane Focus Network. Check out our website and instagram at: https://arcanefocusnetwork.com/ http://www.instagram.com/arcanefocusnetwork You can find us on all our socials below: https://linktr.ee/arcanefocusnetwork For more podcasts, visit: https://www.youtube.com/playlist?list=PLYl9A5T9306D3H1a9_GEELXMIlowT00hL https://www.youtube.com/playlist?list=PLYl9A5T9306AgqGpAliKE_rEsT7akN89Q https://www.youtube.com/playlist?list=PLYl9A5T9306AAxhjw6516GUEAAHf_T-3w If you're looking for even more adventure, you can find and support us on Patreon: https://www.patreon.com/c/ArcaneFocusNetwork