THE SHORT VERSION
Zuckerberg's Muse now builds your apps — he started with a barbecue game

Meta launched Spaces in its Muse app on November 6: describe an idea in chat and Muse builds a custom in-app experience around it — a holiday gift tracker, a wedding planner, a trivia game, a home control dashboard. The spaces live in the sidebar, pull fresh updates from connected third-party apps, and can be hidden or scheduled.
Chief executive Mark Zuckerberg demoed it himself on X, saying he had built a barbecue game, an event tracker and a home control dashboard. Spaces is the second Muse feature in a week, after voice chat with animated avatars on November 5 — and Muse agents already count 10 million users in the US and Canada, less than two months after launch.
Meta says Spaces is available from November 7 everywhere Muse is offered, and the company is exploring sharing and collaboration between users.