Stars Without Number Character Builder
A free, browser-based character builder for Stars Without Number (Revised Edition). It walks you through attributes, background, class, foci, skills and equipment, does the arithmetic as you go, and hands you a playable character sheet — plus a filled copy of the official SWN PDF if your table plays on paper.
Free, in your browser, no account needed. See what’s free and what isn’t.
What the Stars Without Number builder does
Every step of chargen, in order
Attributes, background, class, foci, skills, equipment and the final sheet. The builder tracks what you still owe — an unspent skill point or an unanswered focus choice is flagged rather than quietly dropped.
Warriors, Experts, Psychics and Adventurers
All four core classes plus the partial-class combinations, with attack bonus, hit points and saving throws derived for you as you level.
Psionics handled properly
Pick disciplines and techniques, track Effort, and see your psychic skills alongside everything else on the sheet instead of on a separate scrap of paper.
Foci that actually do something
Foci grant their bonus skills, attribute bumps and free gear automatically, including the ones that ask you a question ("+1 Strength or Constitution") rather than leaving you to remember it at the table.
Starships and sectors too
The ship builder covers hulls, fittings, defences, weapons and modifications with the mass, power and cost budgets enforced. The sector builder paints a hex map of systems, worlds and factions.
Export to the official sheet
One click fills Sine Nomine’s own form-fillable SWN character sheet, or exports a styled PDF laid out for play. Characters also export as JSON so nothing is trapped here.
How to make a Stars Without Number character
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Roll or assign attributes
Roll 3d6 straight down or take the standard array; the builder applies the modifiers and lets you swap one score to 14 as the rules allow.
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Choose a background
Your background grants a free skill and either a quick set of picks or rolls on its growth and learning tables.
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Choose a class
Warrior, Expert, Psychic, Adventurer or a partial combination. Hit points, attack bonus and class abilities follow automatically.
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Pick your foci
Take your foci and answer any choices they offer. Granted skills and free equipment are applied for you.
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Spend skill points and buy gear
Spend the remaining skill points, then outfit the character from the full equipment catalogue or a starting package.
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Play or print
Open the character sheet to roll dice, track HP and system strain and keep a journal — or export the PDF and play on paper.
Built for the whole campaign, not just chargen
Most builders stop the moment the character exists. This one carries on: the character sheet is where you level up, spend credits, manage inventory, roll skill checks and saves with a built-in dice roller, and keep session notes. GMs get their own side of the app.
- Level-up wizard that applies HP, attack bonus, saves and skill point gains
- Campaign mode with a shared party roster and join codes
- NPC and encounter generators, faction turns, and a sector hex map
- Homebrew items, cyberware and mods that resolve exactly like book content
Deluxe content, if you want it
The Deluxe Edition material ships behind per-system toggles, so a table playing the free edition never sees rules it does not own. Turn it on and you get the space magic classes (Arcanist, Magister and the adept traditions), heroic characters, True AI, transhuman shells and the mech catalogues.
Stars Without Number character builder FAQ
Is this Stars Without Number character builder free?
Yes. Every rule, every builder step and every GM tool is free, with no account required — characters save in your browser by default. Making an account adds cloud sync across your devices, and an optional paid tier only adds cosmetic flair and extra cloud storage. Nothing about the rules is behind a paywall.
Do I need the Stars Without Number rulebook to use it?
A free edition of Stars Without Number: Revised is available from Sine Nomine Publishing, and the builder covers it. The tool implements the mechanics — you will still want the book for the setting, the GM advice and the tables.
Can I export a Stars Without Number character sheet PDF?
Yes. You can fill the official form-fillable SWN sheet, export a styled sheet laid out for play, or export the raw character as JSON to import again later.
Does it handle psychics and Effort?
Yes. Psychic disciplines and techniques are pickable at creation and on level-up, and the sheet tracks Effort and system strain during play.
Can I build a starship?
Yes — the ship builder implements the SWN starship construction rules with hull classes, fittings, defences, weapons and modifications, and enforces the power, mass and cost budgets as you spend them.
Does my character save?
Characters are stored in your browser first, so a build survives a refresh and works without an account. Sign in and a character can additionally sync to your account so it follows you between phone and desktop.
More tools for your table
Starship Builder
Hulls, fittings, defences and weapons with the budgets enforced.
Sector & Hex Map Builder
Generate a star sector or paint an overland region.
NPC Generator
Roll a usable NPC — name, stats and a hook — in one click.
Campaign Mode
Party roster, session prep, encounters and factions.
Homebrew
Your own items, cyberware and mods, alongside book content.
Blog
Release notes and what is being built next.