A character builder and sheet for the 1st-edition fantasy RPG rules, built on the open SRD. Eighteen open-content rulebooks are included: classes, races, feats, spells and monsters, with every number calculated for you. Works offline, no account needed.

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Early Access Software

Get involved with this software as it develops.

Note: This Early Access software is not complete and may or may not change further. If you are not excited to use this software in its current state, then you should wait to see if it progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“OpenSheet 1e SRD already builds and runs complete characters from level 1 to 20 across eighteen open-content rulebooks. The rules are large, and the most valuable testing is players building the characters they actually play. Early Access lets us find the edge cases a test suite cannot — an unusual archetype combination, a feat chain, a homebrew class — and fix them with the people who use the app at the table.”

Approximately how long will this software be in Early Access?

“We expect around six to twelve months, depending on what players report. We will leave Early Access when the rules coverage and the feedback tell us it is ready, not on a fixed date.”

How is the full version planned to differ from the Early Access version?

“We plan to keep checking and refining rules accuracy, especially less common class features, choices and optional systems. We plan to add more prebuilt choice menus where the app still asks for typed input, extend the homebrew editor to more kinds of content, and polish the game-master tools and the character sheet layout. We also plan to keep characters, backups and homebrew moving smoothly between this app and the companion Android app.”

What is the current state of the Early Access version?

“Fully usable. Character creation, level-up, the live character sheet, spell books, equipment, companions, mythic tiers, homebrew, campaigns and the encounter builder all work today, with eighteen rulebooks of open content included. Characters save on your computer, with backups, and import and export as .pcg files. Like any Early Access product, you may find rules interactions we have not yet got right — please tell us when you do.”

Will this software be priced differently during and after Early Access?

“The app itself is free and will remain free. The optional Full Unlock DLC is priced the same during Early Access as we intend it to be at release, and anyone who buys it during Early Access keeps everything it unlocks.”

How are you planning on involving the Community in your development process?

“Through the Steam discussion forums and bug reports and Discord. Rules questions are our priority: when you report a number you believe is wrong, we check it against the book and fix it, and changes are listed in the patch notes. We also welcome requests for content to add as homebrew templates and for features that would help at your table.”
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This game is not yet available on Steam

Planned Release Date: November 2026

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About This Software

Build a character the rules agree with.

OpenSheet 1e SRD is a character builder, live character sheet and game-master toolkit for the 1st-edition fantasy RPG rules published as Open Game Content. Pick a race and class, and it does the arithmetic as you go: armor class, saves, attack bonuses, skills, spell slots, carrying capacity. Every number on the sheet shows where it came from.

Eighteen rulebooks of open content, included and switched on
The core rules, the advanced player, class and race options, the combat, magic, campaign and equipment options, occult and mythic rules, the variant rules, five monster books, the monster tribes and the technology rules. That is hundreds of classes, archetypes and races and thousands of feats and spells, all searchable and all free. You can add other open-content data of your own through Source Books.

From first level to twentieth

  • Guided character creation, with point buy or rolled scores.

  • Level-up that knows what each class gains at each level, plus archetypes, favoured class bonuses and alternate racial traits.

  • A spell book for prepared and spontaneous casters, with domain slots, spells per day and spells known.

  • Equipment, encumbrance and magic items.

  • Animal companions, eidolons, familiars and mythic tiers.

  • Optional systems: traits and drawbacks, sanity and corruption, and more.

Your own homebrew
Write your own races, classes, feats, spells, items and more. Start from any existing entry as a template, change what you want, and it works like the built-in content. Share a collection with your players as a single file.

For the game master
Campaigns, an encounter builder with experience and challenge ratings, a monster library and builder, a DM console, a world builder and a campaign log.

Your data stays yours
No account, no internet connection, no tracking. Characters are saved on your computer, with full backups and an optional sync through a folder you choose. Characters import and export as .pcg files and move to and from the companion Android app.

Free, with an optional Full Unlock
The app and all eighteen rulebooks are free. The Full Unlock DLC removes the free edition’s limits (three characters and five homebrew entries) and keeps your DM content saved. It also adds:

  • full sheet and PDF export;

  • the Art Studio, for attaching your own portraits and scenery;

  • Virtual Tabletop export to Foundry VTT;

  • the Stronghold Builder;

  • extra visual themes and table-aid extras.

Rules content is never locked behind the purchase.

This product uses Open Game Content under the Open Game License v1.0a. The license and the required notices are included in the app.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

The app’s decorative artwork — class frames, backgrounds, portraits and avatars, spell book art and the app icon — was created during development with AI image-generation tools and reviewed before inclusion. No AI is used while the app runs: it generates no content, has no AI features, and does not connect to the internet. All rules text is Open Game Content from the published rules, not AI-generated.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit or later
    • Processor: 64-bit x86 (x64), 2 GHz dual-core
    • Memory: 2048 MB RAM
    • Graphics: DirectX 11 capable graphics, integrated is fine. No dedicated GPU required.
    • DirectX: Version 11
    • Storage: 400 MB available space
    • Sound Card: Not required — the app has no audio
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11 64-bit
    • Processor: 64-bit x86 (x64), quad-core
    • Memory: 4096 MB RAM
    • Graphics: Any DirectX 11 GPU
    • DirectX: Version 11
    • Storage: 500 MB available space
    • Sound Card: Not required — the app has no audio