Gamemasterdon

Overview

Making videos about my favorite TTRPGs including
Mutants and Masterminds https://www.groupfinder.gg/library/mutants-and-masterminds-3rd-edition-2010
,
Dungeons and Dragons https://www.groupfinder.gg/library/dungeons-dragons-55e-2024
, and
Daggerheart https://www.groupfinder.gg/library/daggerheart-2025
.  Game master prep work advice, first hand professional game master stories, methods for solving many tricky aspects of game mastering.  Homebrew map crafting and how to character building guides for Mutants and Masterminds.

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Other entries

Overseer Studio
Tools & Platforms

Overseer Studio

English
Paid
Universal
Overseer Studio is a modern, desktop based "Digital GM Screen" designed to solve the problem of browser tab bloat and fragmented software during tabletop sessions. Developed by Tom (the creator behind Astral TableTop and dddice), it is an offline first application that allows Game Masters to consolidate all their digital tools—including VTTs, PDFs, and web browsers—into a single, infinitely customizable workspace. It is currently moving through its Early Access phase in mid 2026, positioning itself as the ultimate organizational layer for the modern "hybrid" or online GM. Description Overseer Studio is not a Virtual Tabletop; rather, it is a "tool for your tools." It provides a modular canvas where a GM can embed windows for D&D Beyond, Spotify, Obsidian, and Roll20 side by side. By using a system of "tiles," GMs can create custom layouts that fit their specific workflow, switching between different "screens" with keyboard shortcuts. Because it is a local desktop application that requires no subscription or internet connection to run, it offers a level of stability and privacy that cloud based alternatives cannot match. System Overview & Key Features Infinite Modular Canvas The core of Overseer is an infinite workspace where you can place "tiles." These tiles can contain anything from a simple notepad or a PDF viewer to a fully functional web browser. You can resize, group, and tab these tiles together to create the perfect command center for your specific campaign. VTT and Tool Embedding Overseer is designed to play well with others. You can natively embed Foundry VTT, Roll20, or Owlbear Rodeo directly into your screen. This allows you to manage your map and tokens in one tile while keeping your campaign notes and creature stat blocks visible in another, eliminating the need to Alt-Tab between programs. Offline First Architecture The application runs entirely on your hardware (Windows, macOS, or Linux). This ensures that your game is never interrupted by server outages or slow internet speeds. Your data remains on your machine, giving you total ownership over your preparation materials. Pop-out Player Sharing While the software is for the GM, you can "pop out" any tile—such as a map, a piece of concept art, or a video—into a separate window. This window can then be shared via Discord or Zoom, or cast to a physical TV for in-person groups, allowing you to control exactly what the players see. Extensible Plugin SDK For power users, Overseer features a robust SDK. Extensions are built using standard web technologies (HTML/JS), allowing the community to create custom dice rollers, soundboards, or automation tools that can "talk" to each other across different tiles within the session. One Time Purchase Model In a market dominated by monthly fees, Overseer Studio is a "buy once, own forever" product. There are no account requirements or hidden subscriptions, and all future updates are included in the initial purchase price, making it a highly cost effective solution for long term GMs. Additional links overseer.studio - Official Overseer Studio website discord.gg - Official Discord for beta testing and development updates

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Characters Without Number
Tools & Platforms

Characters Without Number

English
Subscription
Character sheets
A free character builder and GM toolkit for Stars Without Number, Cities Without Number and Worlds Without Number by Sine Nomine Publishing.

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Inkroll
Tools & Platforms

Inkroll

English
French
Dungeons & Dragons
Inkroll is a web platform for playing tabletop RPGs play-by-post: asynchronously, in written posts, on each player's own schedule, with a human gamemaster running the table. It sits between heavyweight real-time VTTs and plain forum software; the writing stays the point, but the platform actually understands characters, dice, secrets, and the GM's role instead of leaving them on the side. It is also, deliberately, a beautiful place to spend a campaign. Inkroll was built by play-by-post players who wanted the game to read as well as it plays: a calm, candlelit page of ink and parchment where posts get the space of a book, quoted speech and images are cleanly styled, and every table can choose the look and post layout that suit its story. The tools stay out of the way until the moment a hand reaches for them, so a session feels like reading and writing a novel with friends, not operating software. Dice are typed straight into a post, like {Perception:1d20+2}, rolled once on the server the moment the post is published, then frozen, with a per-post audit the whole table can see, so a result can never be edited or quietly re-rolled. Players post as their characters, with portraits, versioned character sheets, and quick stat updates (hit points, spell slots, conditions) committed together with the post. GMs get sealed passages delivered to exactly the players they choose, chapters, scene notes with a world map and a per-chapter battle map, and live updates with typing indicators and read markers, so an asynchronous table still feels alive. Long campaigns are first-class citizens: the Chronicle keeps a running recap of every chapter and every character met, and answers questions from the campaign's own posts, so a returning player or a newcomer catches up in minutes. And because a campaign written like a book deserves to become one, a finished game can be exported as a designed, print-ready PDF or EPUB. Games already in progress can be imported from Myth-Weavers or Discord with posts, characters, images, and dice results intact. Ready-made sheets cover D&D Fifth Edition, Pathfinder 2e, Call of Cthulhu, Shadowrun, Cortex Prime, and Grimwild, plus a system-agnostic option and a builder for custom rulesets with their own dice mechanics. New systems are also gladly added upon request.

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