The game masters’ desktop app — by BlueDungeonCraft
Download Roll in One
Everything you prep, ready for the table.
Finely finished spell, monster and item cards, character creation, session management: Roll in One gathers your prep — and prints it without ever cutting a line. One-time purchase, no subscription, no forced account, and your data stays on your machine.
Text is never cut off
A long spell continues on a numbered second card. Nothing gets truncated, ever.
Printing you can trust
A4 sheets set to the millimetre, colours designed for the printer: what comes out of the tray is what you saw on screen.
French and English
Every card exists in both languages, with the full SRD 5.2.1 text.
Editable end to end
Tweak a text, a school, a gradient: your homebrew gets the same finish as everything else.
Platforms
Pick your platform
Windows first, macOS next — the same app, with the same content and the same update pace.
Windows
SoonWindows 10 or 11, 64-bit. A classic installer: download, run, play.
Soon Get notified at launch →macOS
SoonThe macOS build is the next step. Leave your address to hear about it the day it ships.
Soon Get notified at launch →Install
Install on Windows, in three steps
Requirements
- Windows 10 or 11 (64-bit)
- Less than 1 GB of free disk space
- No account, no always-on connection: the app works offline
Steps
- Download the installer (.exe) with the button above.
- Run it and follow the steps — you pick the install folder.
- Open Roll in One from the Start menu: you’re all set.
Windows SmartScreen may warn on first launch while the app builds its reputation: click “More info”, then “Run anyway”.
Roll in One
One desktop app, the GM’s whole arsenal
Everything that ends up on your table starts here: you create, the app lays it out, your printer keeps up.
Cards worthy of your table
Spells, monsters, magic items: build your cards, adjust the text, pick the class gradient — then print cut-ready sheets with crop marks, bleed and duplex.
A complete character, no spreadsheet
Guided creation level by level: class, background, features, known spells. At the end, a clean sheet — and the character’s spellbook cards, ready to print.
Run the fight, not the paperwork
Initiative, hit points, conditions, monster stat blocks at hand: the session moves forward and everything stays readable — for you and for the table.
Packs ready to play
Spells, monsters, items, class features: finished content packs, laid out and printable as-is — enough to launch a campaign without losing the evening to prep.
Roll in One
Meanwhile, try a slice of Roll in One online
The same cards as the app, rendered in your browser: all 339 spells, plus monsters, animals and magic items of SRD 5.2.1 — free, no account, no cookies.
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