What a morning brings
A letter, today's choice, word of what was looked after overnight, and a find.
World Machine Experimental macOS project
A small harbour town on your Mac whose people work, marry and grow old. Each morning brings a letter, a choice and a find.
Not notarized: the first launch needs a one-time Open Anyway step.
Experimental · pre-alpha · macOS 14+
Pocket Universe settles Ares, Maple Street in 1987, or Icebridge, each drawn as itself.
Weddings, births and farewells, drawn before, during and after.
Even in the light appearance, gauges and buttons darken with the sky, while the drawer and cards stay light and readable.
A letter, today's choice, word of what was looked after overnight, and a find.
People are born, grow up, grow old and die.
Scaffolding goes up at once; paint a flag, and name boats and babies.
When someone asks a favour, you do it by talking with them.
The interface, stories and talk come in English, Chinese or Japanese.
Off by default: an AI model can word the World’s news and people’s replies.
Oct 16, 2026
api.github.com for the latest release. api.anthropic.com. No. World Machine is an experimental pre-alpha. It opens Worlds saved by v0.20 or later and carries on with them; Worlds from v0.28 and v0.29 should open too, but no test covers them yet. A World made with a version of its World Pack (the place it is built from, such as Tiny Society) that this app does not include will not open, but the file is left untouched with its whole history. Each save keeps the previous one as a backup, <name>.world.bak, and a file from a newer version of the app opens read-only and is never saved over.
Download the DMG from GitHub Releases and drag World Machine onto Applications; it runs on Apple Silicon or Intel. Builds are not notarized, so the first launch needs a one-time Open Anyway step, described in the install guide.
Yes. World Machine Demo, also on GitHub Releases, is 20 to 30 minutes of Tiny Society, up to day 8. Your harbour stays in My Worlds, and the full app opens it and carries on.
No, not since v0.30. Opening a World on a new day of this computer's calendar begins a sitting, which passes one World day, or three on a World's very first. A week or a month away still brings one day. A World from v0.29 or earlier gets one day at its next sitting, and the time it was away is not caught up. When the day is spent, a Goodnight card comes up and the World sleeps until tomorrow.
It is off by default. Turned on in Settings, an AI model words what the World tells you when you return and answers for the people you talk to; that model can be Pi (an open-source coding agent you install), your own API key, or this Mac’s built-in model, which has not yet been tried on a real Mac. Automatic checks and a second model screen its answers, though some bad ones still get through; each answer is marked “Written by AI” with a Report button, and crisis and sexual topics are never sent. What talk changes, such as warmth or a favour done, is decided by the World itself, and your API key stays in your login keychain.
World Machine