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Blockparty

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Blockparty — Demo video

A living neighbourhood life sim where residents make friends, throw parties, find jobs and feel things on their own, and Meta AI hears you, finds anything you name on screen, and puts your block on its own front page. Note on the video: my live screen capture failed during recording, so the gameplay was re-recorded on the same build to match my narration. Download the game from the repo and try the voice commands, SAM Look and the Gazette yourself. Blockparty is a cartoony neighbourhood life simulation. Eight residents live their own lives: they eat, work, study, chat, form friendships, plan parties with invitations and show their mood on their faces. You can guide any of them with the mouse, the keyboard or your voice. Meta AI is built into the play itself, not added on: - Talk to the game. Muse Voice turns speech into commands. Say "Eli, go to work" or "have Cara chat with Dev". When a phrase is unusual, a Meta model maps it to one of the game's commands, and the game engine checks it before anything happens. - Point with words. Say "find the woman in the red shirt" or "show me a bike". SAM outlines it on screen, the game works out what is there, and the camera follows that resident or highlights the object with what you can do there. - The Block Gazette. Every in-game morning, a newspaper reports what actually happened yesterday. SAM cuts the star resident out of a game screenshot and Muse Image draws the front-page illustration. - Residents decide with guardrails. Muse Spark 1.3 proposes some resident choices; the simulation keeps final authority and uses its own choice when the model is slow. How it's built: - Unity 6 game with a deterministic simulation core in plain C# (needs, autonomy, relationships, parties, jobs, education, aging, births, housing), separate from presentation. - Every AI call goes through one boundary with typed requests, timeouts and offline fallbacks; no keys in code. - Save and load for the whole world state. - Hundreds of evidence-checked packages: each feature carries its own test suite and recorded proof, and a single command verifies any package. - Long no-input sessions run with zero exceptions.

Team