Codex Cryptica

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Overview

Codex Cryptica is an AI-assisted worldbuilding and campaign management tool built around a living knowledge graph instead of a folder of loose documents. Every character, faction, location, and event you create becomes a linked entity, so your world stays connected and explorable as it grows. Genre-agnostic across fantasy, sci-fi, cyberpunk, horror, post-apocalyptic, western, steampunk, and more.

Worldbuilding & Lore Entities link automatically into a visual relationship graph. A full chronology view (calendar + timeline) tracks your world's history, and multi-generation family trees keep lineages straight without manual bookkeeping.

AI Co-Author The Lore Oracle grounds every suggestion in your existing lore rather than generating generic filler. Dedicated generators cover NPCs, factions, settlements, magic items, languages, and full dungeon/delve locations. Complete with an interactive room-by-room Dungeon Canvas and GM dossier for anything you generate.

Play & Session Tools A tactical VTT map, in-app group voice chat, and a Session Hub for prepping and running games sit alongside your lore. No separate tool needed to go from "wrote it" to "ran it."

Share & Collaborate Publish a read-only link so players can browse the parts of your world you choose to share, even while you're offline. GM-only notes and hidden content stay private automatically.

Local-First Codex Cryptica stores your campaign world directly in your browser instead of a server you don't control. There's no account required to start building, and no vendor deciding when your data is available. Your vault syncs optionally to Google Drive for backup and cross-device access, but the source of truth stays local. You can work fully offline, and generators fall back to local tables when there's no connection, so a dead wifi signal never stops a prep session. Because nothing is locked behind a proprietary format, you can export your vault as a set of plain Markdown files at any time, or import worlds built in other tools. The result is a campaign manager that behaves like a personal notebook rather than a subscription service. Your world exists whether or not Codex Cryptica's servers do.

Generators Cryptica's public generators are AI powered RPG content tools covering NPCs, factions, locations, items, quests, languages, full dungeon/delve locations, and more! Each generator is theme-aware, adapting output to fantasy, sci-fi, cyberpunk, horror, post-apocalyptic, western, steampunk, and other genres rather than sticking to one setting. Subsequent generations can be aware of previous content, and use that in its generation, enabling a full session of world building just from the generators. Generated results can be copied directly for use at the table, or saved into a local Codex Cryptica vault to become a linked entity in a larger campaign world, connected to the characters, factions, and locations already there. The generators is also available inside Codex Cryptica for world aware generations.