High Guard Rules

StarCar is a permanently free linear star systems cartography tool. It enables GMs running sci-fi campaigns to visualize and share star maps with their players easily. It allows a lot of different customizations for orbital bodies, like planets, secondary stars, Ringworlds, Dyson Spheres, and more. GMs can add notes to individual orbital bodies, stars, and moons. The notes can be totally customizable, or use either Traveller or Stars Without Number rules. If they want, the GM can even export a stylized PDF report that details all the notes in an easy-to-follow format. And if the GM just needs something right away? StarCar will roll the dice and generate a totally randomized system: random stars, planets, and even randomized plot hooks. Once the GM is finished, they can export it in a number of different formats: PNG, WebP, or JPG, or with settings like Printer Friendly or Transparent Background. Anything exported is licensed under Creative Commons 4.0, which means the person who makes it owns it. They can even use it in any products they sell, with attribution.

Nav-Fi³ is a web-based campaign companion for the Traveller RPG, covering both the classic Third Imperium setting and Mongoose's 2300AD. Run your ship like a real operation: a time-aware financial ledger tracks income, costs, mortgages, and crew payroll against each vessel's account, with automatic PENDING/POSTED transitions synced to your campaign's calendar. Plot jump routes on an interactive TravellerMap-integrated navigator, manage cargo holds and speculative trade, and let The Cube (or 2300AD's The Link) generate freight, passenger, mail, salvage, and prize contracts on demand. Multi-user by design: a Referee can grant players granular access to piloting, cargo, or finance on a per-ship basis, suspend and reinstate them without touching the roster, and everyone logs in with Google or Discord (2FA supported). Crew records track status over time — active, MIA, deceased — and every session's changes surface in an automatic "Since Last Session" recap. Two settings, one interface: pick Traveller (with full Milieu/era support) or 2300AD (Gregorian calendar, Stutterwarp drives, colonial nations) from the sidebar — same tool, faithfully adapted rules underneath.

A free, accessible, browser-based character creator and editable sheet for Mongoose Traveller 2022 — every roll cited, every choice logged, every character saved locally. Description Traveller Lifepath is a free, browser-based character creator and editable sheet for Mongoose Traveller 2022. It walks players through the full Mongoose 2022 lifepath — basics and species, characteristics, background skills, pre-career education (University, Army Academy, Marine Academy, Navy Academy), career terms with their full survival / event / commission / advancement loop, mustering-out, the post-creation skill package, and a final reviewable character sheet — without ever leaving a single browser tab.                                                              The tool offers three ways to set characteristics. Players who want the classic experience can have the site roll 2D × 6 into a pool and assign each value to whichever stat they like. Players who prefer their own physical dice can enter results manually; the site still tracks every DM, target, success/failure, and aging effect. Players who'd rather skip randomness entirely can use the included point-buy method (42-point budget, 2..12 per stat). PSI is rolled separately when psionics are enabled, and the Psion career unlocks accordingly.  /images/general-media/1778159165_rhvJ8xSn.png The character-creation rules are implemented as a typed effects engine — TypeScript discriminated unions with exhaustive switching — so every rule lives in one place and can be tested in isolation. The project ships with around 360 automated tests covering qualification, commission, advancement, aging crises, mishaps, life events, connections, the skill cap of 3 × (INT + EDU), pre-career education, and the Mongoose 2022 errata clarifications for Vargr and the Vacc Suit skill. A full audit trail of every rolled die, every applied DM, and every player choice is captured to a roll log that updates in real time. The post-creation sheet is a fully editable Mongoose-style character record. Skills, careers, equipment, weapons, armour, augments, connections, benefits, and free-form notes can all be edited inline; values save automatically to localStorage with cross-tab synchronisation, and the sheet is print-friendly (one panel per printed page, ink-friendly styling). Every character in the local library can be exported and re-imported as JSON for backup or for handing off between players.                                                      Two visual themes are included: a light "Little Black Books" look in the spirit of Classic Traveller, and a dark "Imperial" theme — plus a System mode that follows the operating system's light/dark preference and reacts live when it changes. Theme choice is remembered between sessions.                                                                    Accessibility is treated as a first-class concern. The interface meets WCAG 2.1 AA contrast requirements in both themes (verified by an axe-core audit suite that runs as part of the project's tooling), every interactive element has a visible keyboard focus indicator, icon-only buttons carry ARIA labels, and the layout includes a skip-to-content link for screen-reader users.            /images/general-media/1778159170_sbkOfhno.png Other features include undo across the wizard (rewinds to the relevant picker after popping a character snapshot), URL-based debug logging (?debug=1), the Connections rule for shared PC backgrounds, an aging-crisis path with medical-debt accumulation, and an honest "unofficial fan tool" disclaimer in every place it matters.                            The project is open-source under the MIT License, runs entirely client-side with no backend and no account requirement, and uses privacy-friendly analytics (no cookies). Bug reports, rules questions, and pull requests are welcome on GitHub. Links bytesbynelson.github.io - Live tool github.com - Source code github.com - Issue tracker / feedback

RollCall Tavern is a browser based toolset for running table top RPG's. The intent was to put everything a session needs in one place, For the DM it provides a single workbench for the campaign. The DM can take Notes, create NPCs, and generate battle and more. A story map helps organize and branch your thoughts visually. While, battle maps calculate line of sight, so walls block vision and each player sees only what their character can see. Built in combat tracker helps you run and calculate enemy damage. Rollcall Tavern also allows you to push images to the players, anytime so you can share more than just battle maps. Run your campaign the way you want it to be run. For players the experience runs on any browser. They see the current map and any material the DM pushes to them, and on their turn they attack, cast, move and end their turn from a single action bar. Player sheets and inventory tracking also help players stay organized and ready to go. Everything runs in a browser. There is nothing to install, and a session works the same way whether the group is gathered around one table or playing remotely. RollCall Tavern is free to use. The only paid component is optional AI art and text generation, which is disabled by default and can be ignored entirely. A full campaign can be run without it. All campaign data exports as JSON and accounts can be deleted at any time.

Vaesen - Nordic Horror Roleplaying is written by Nils Hintze, built on the folklore research and artwork of Swedish illustrator and author Johan Egerkrans, and published by Free League Publishing in 2020. It runs on an adapted version of Free League's house Year Zero Engine, the same lineage powering Tales from the Loop, Forbidden Lands, and the official ALIEN RPG, but reworked here around investigation and dread rather than survival or combat.  The game earned three ENNIE Awards in 2021 (Best Art and Cover, Best Interior Art, Best Monster/Adversary), and its Mythic Britain & Ireland expansion went on to win Gold for Best Interior Art, Best Setting, and Product of the Year in 2023.

Pathfinder is a heroic fantasy roleplaying game system with a high amount of character customization and progression, published by Paizo in 2009. It was developed as a response to Wizards of the Coast transitioning the D&D genre to D&D 4th Edition, which was seen as a strong deviation from the math-heavy norm from 3.5E. Pathfinder was built using the Open Game License (OGL) to revise and expand upon the beloved 3.5 ruleset.  The system it directly evolved from is Dungeons & Dragons 3.5 Edition The second edition of the game was released in 2019 as Pathfinder 2nd Edition Description Pathfinder 1e is well known for its "crunch". It relies heavily on strict rules, mechanical variation and math. The system is perfect for players who prefer heavy character optimization and customization, focus on tactical combat encounters and a strong ruleset for almost any situation. Pathfinder is proud of it's complexity and very much focuses on it. Boasting a massive library of  spells, classes, and feats, allows the players to build very mechanically different and unique characters. It is also renowned for its "Adventure Paths": epic, six-part published campaigns that take characters from level 1 to roughly level 20. System Overview & Key Features The d20 System & Action Economy Like 3.5E, the core engine runs on a d20 roll plus modifiers. On every turn the characters have a set structure to perform their actions. Mechanically separated into Standard, Move and Swift actions. Archetypes & Deep Customization Instead of relying on complicated "Prestige Classes," Pathfinder 1e popularized "Archetypes." These allow players to swap out base class features for heavily themed alternatives right from level 1. This enables the players an extensive levels of customization when combining with the thousands of available feats to further personalise their unique character concept. Base Attack Bonus (BAB) Martial prowess is measured by a Base Attack Bonus. As this number grows, martial classes can eventually achieve "iterative attacks," allowing them to attack with their weapons multiple times per their turns, although penalties apply for repeated attempts. Combat Maneuver Mechanics (CMB/CMD) The system introduced two systems to simplify actions like tripping, grappling or disarming your opponents: Combat Maneuver Bonus and Combat Maneuver Defense. This created a single, reliable formula to use when performing maneuvers against an enemy. Skill Ranks Instead of a single "Proficiency Bonus" like in modern games, players are given a pool of Skill Points at every level (determined by their class and Intelligence score) to manually distribute across a massive list of skills, allowing for highly granular non-combat abilities. Lethality and "Crunch" As characters level up, the numbers grow exponentially. This means, that by reaching higher levels of encounters, characters and their opponents are dealing huge amounts of damage, alongside with various magical buffs and spells that could instantly kill a character. Planning and tracking situational modifiers and buffs becomes vital for survival. Additional links pathfinderwiki.com - Pathfinder Wiki  aonprd.com - Archives of Nethys (Official free rules database for PF1e)