Overseer Studio

Session Forge is an offline game master toolkit for fantasy tabletop RPGs, made by Donald Stelling of Digital Underground. Instead of another long PDF, it is a single HTML hub that the GM opens in a web browser and uses at the table to prepare and run sessions. It holds 14 tools: encounters, NPCs, loot, initiative, session notes, dungeons, taverns, quests, rumors, villains, weather and travel, settlements, a one-click one-shot outline, and a short GM playbook. Tools for running the table - Encounter Forge builds fights on an XP budget set by party level, party size and difficulty (Easy to Deadly). Each encounter comes with a motive and a twist, and the creatures are drawn from 198 original 5e-style stat lines. - Initiative Tracker handles HP, AC, conditions, group adds and d20 rolls. Rounds and turn order save automatically, so combat survives closing the browser. Fights made in Encounter Forge can be sent straight into the tracker. - Session Notes saves as the GM types, offers random sparks for quick ideas, and keeps a full archive that can be restored. - GM Playbook explains how to use the tools live without slowing the game down. Generators - Full Session: a one-click one-shot outline with a hook, NPCs, a villain, a journey, two fights, a site, treasure and a twist. - NPC Generator: 8 naming cultures, plus role, voice, quirk, secret and adventure hook, and a "crowd of six" mode. - Loot Tables: common to very rare items, plus gems, art objects and 64 curses. - Taverns & Shops: taverns and shops with priced wares. - Dungeon Builder: dungeons of 3 to 12 rooms, with a boss scaled to the party. - Quest Hooks, Villain Forge and Settlements. - Rumor Mill: rumors with a GM-only truth rating. - Weather & Travel: 6 climates and 4 seasons. On every generator, the GM can lock a line and reroll the rest, go back through a saved history of the last 20 rolls, copy results as text or Markdown, download them as .md or .txt, and send them to Session Notes in one click. Seeds are repeatable, so the same seed always gives the same result. How it works The GM downloads a ZIP, opens index.html and bookmarks it for game night. After that one download, Session Forge runs fully offline with no account. Data is saved in the browser, and the home page has backup and restore. It works in a browser on desktop and on mobile. Systems and fit The stats are 5e-flavored so they feel familiar, and the content is easy to reskin for OSR games, Pathfinder or homebrew settings. All generator content is original; it is not a dump of official rulebook text. Session Forge suits GMs running 5e-compatible fantasy, one-shots and west-marches campaigns, and GMs who improvise and need ideas fast. It is not a virtual tabletop plugin: it runs locally in the browser and does not connect to Foundry VTT or Roll20. Price and license Session Forge is a one-time purchase from CAD$14.99 (pay what you want above that) on Gumroad. The license is personal, single-GM use. Version 2 raised the toolkit from 6 tools to 14, and earlier buyers get v2 free by downloading again; their v1 saves carry over.

A new kind of toolkit for any RPG and GM. Import a rulebook or build your own RPG, and RPGadget fills every tool for you. NPCs and monsters arrive with full stats and lore. Adventures become flowchart storyboards. Players make their characters on their phones before the session starts. Everything you need is in one place, so you can focus on your players instead of hunting for page numbers.

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.

HewnHero.app is a free D&D 5e and 5.5e Character builder that uses a GitHub-hosted, JSON-based, SRD-only (5.1 and 5.2) database that you can clone and add your own material.

Hero's Rise is a digital companion tool and cross-system rules engine currently in development for  (TTRPG) Game Masters. Designed to solve the mechanical issues of running campaigns that borrow from multiple game systems simultaneously, the tool acts as an automated translator and calculator for tabletop mechanics. Instead of Game Masters spending weeks manually rewriting rules to make different games compatible, Hero's Rise automatically translates elements like feats, spells, status conditions, and action economies between systems such as Pathfinder and D&D. The tool ensures that hybrid games remain balanced without stalling gameplay. Hero's Rise is in pre-production and managed by a small team, with an early access launch targeted for late 2026 or early 2027.

ChaosWood: Forsaken Tombs is a tabletop role-playing game that consists of a set of core rules, two starting adventures, and all the tools needed to create your own adventure. A fast-paced, perilous experience, set in an immersive dark fantasy world brought to life through rich art and evocative components awaits you!