Download Virtual Matter
Every World runs in your browser with no install. The native clients run the same Worlds with more memory and higher frame rates.
release/iteration072
Desktop
Windows
86 MB · build b8a7ac4c945c
Run the installer. It adds Virtual Matter to the Start menu and opens virtualmatter:// links in the app. Until the app is code-signed, Windows may say the publisher is unknown; choose More info, then Run anyway.
88 MB · build b8a7ac4c945c
The fallback when you would rather not install. Unzip it and run Client.exe. It works without installing, but it does not open virtualmatter:// links.
Windows 10/11, 64-bit.
macOS
133 MB · build b8a7ac4c945c
Open the .dmg and drag Virtual Matter to Applications.
Linux
93 MB · build b8a7ac4c945c
Open it with your software center, or run flatpak install --user on the file. It brings its own runtime, so it works on any distribution with Flatpak.
116 MB · build b8a7ac4c945c
The fallback when Flatpak is not an option. Extract it and run ./install.sh to add Virtual Matter to your applications menu and open virtualmatter:// links in the app, or just run ./run.sh.
Mobile
Build with your own agent
Have your own harness? Tell Claude, Codex, or Cursor and use your own subscription. How it works
npx virtualmatter make "My World" # create a new World npx virtualmatter pull <link> # work on an existing World
Needs Node.js 18+ and signs you in through the browser on first run.
Or just play in your browser.
No client required. Open any World link and play, or make a new World at virtualmatter.ai.