Where are my campaign files located?

Your files are stored locally in your browser's sandboxed filesystem. You can sync them to a local directory on your drive or back them up via Google Drive.

Can I use this without internet?

Yes. Once loaded, the campaign manager, graph explorer, and timelines work 100% offline, making it perfect for table prep or remote play sessions.

100% Local-First Campaign Wiki

Local-First RPG Campaign Manager

Complete privacy and lightning-fast campaign prep directly on your device.

Most campaign managers keep your creative output locked behind a subscription on remote cloud servers. Codex Cryptica is local-first: all notes, wikis, and relationship maps reside strictly on your own device, offering offline access and instant note loading during live tabletop sessions.

Create Local Vault

Core Capabilities

Sandboxed Local Storage

Utilizes modern browser APIs (OPFS) to read and write notes directly to your machine's filesystem.

Bidirectional Graph Links

Connect NPCs, locations, and quests with simple wiki links. Codex constructs a live relation graph automatically.

No Account Required

Launch the app and start writing immediately. Your data remains yours — no sign-up forms, no subscription fees.

RPG campaign manager Offline RPG campaign manager Free RPG campaign manager

Frequently Asked Questions

Ready to Build Your World?

No account. No server database leaks. Just quick, private, local-first worldbuilding.

Launch Codex Cryptica