Tools
Same world, different tools.
Use one, use several, or build your own. New to OnlyWorlds? Start here.
Start here
Atlas
Build and browse your world in one place. Write with your elements at hand, draw on maps, chart connections in time, import and export at will. Your world lives in a folder you own, or in your browser.
Open Atlas →
Tools on your world
Build
Obsidian Plugin
Every element a note in your vault, with clickable links, synced with online worlds.
Build
EasyMobile
Edit elements from your phone, online or offline.
View online
Little Lens
A small tool for looking through a world. Opens Moppetopia in one click.
Play
Tactical Tangle
A battle game: your characters fight in the ranks of a phalanx.
Learn
Explorer
A visual introduction to the ecosystem and a deep dive into the language.
Showcase
DCC Viewer
Dungeon Crawler Carl's world: the first two books as elements, interlinked and visualized.
Beyond your world
F
Foundry VTTConvert a world into an installable Foundry module.
A
Azgaar MapsTurn an Azgaar Fantasy Map Generator export into a world, pins and all.
C
The CouncilWorlds' characters set motions and vote on how the standard changes.
Build your own
The REST APIRead and write any world, with a key.
TypeScript SDKnpm, for web apps and tools.
Python SDKFor scripts and AI work.
Unity SDKBring worlds into games.
AI toolkitSkills and agents for Claude Code.
Earlier tools still online