Games people built with Muse Spark and Muse Glimmer

People have built playable browser games, a VR port and a mobile game with Muse models, mostly single-file Three.js projects made by Muse Spark 1.3 or local runs of Muse Glimmer 30B. The strongest results come from clear specs, staged plans and automated play-testing. Open-ended "make me a game" prompts produce weaker work, and at least one reviewer said so bluntly.

Here is what is in the catalog, grouped by how it was made.

What games has Muse Spark 1.3 built?

Most one-shot game demos came in the days after Spark 1.3 shipped on September 2.

• AstraVanguard 3D: a single-file Three.js superhero platformer that Spark 1.3 designed, coded and play-tested at xhigh effort in one autonomous session, passing 25 of 25 automated browser checks.
• Pirate platformer: Derya Unutmaz says it worked on the first shot and he is now adding art and levels.
• Minecraft-style voxel game: Three.js, Vite and TypeScript with infinite terrain, crafting, hunger, a day-night cycle and zombies.
• Minecraft-style world for 10 cents: the author reports the generation cost 10 cents.
• Playable 3D worlds with Muse Code: Zi Lin iterating on 3D games alongside Muse Code.
• Lies of P mechanical heart: a three.js recreation from screenshots, with an exploded view.
• MSL one-shot demos: Meta's own staff demos on max reasoning, including a browser 3D kart racer.

Earlier, on Spark 1.2, Will Oldgram's 3D city generator cost about 20 yen as reported, and Bijan Bowen's first look at Muse Code tried a browser OS, C++ skate game, flight sim and subway FPS.

What games has Muse Glimmer built locally?

Glimmer is the open-weights 30B model, so these ran on the builders' own hardware.

• Five self-playing games, Glimmer vs Spark: Tetris, a street racer, a web-slinger, a hedgehog platformer and Flappy Bird, each one file. Rohan Paul's recap says Glimmer delivered all five at about one-fifth of Spark 1.2's cost.
• Arcade clone in 7 stages: a staged plan, the same challenge earlier run against three Qwen models.
• Glimmer first test: a C++ skate game, subway FPS, drum-kit sim and more.
• Glimmer on a 16GB setup: sand physics, a dungeon crawler, and Godot and Blender tasks on one GPU.

The pattern across these: staged plans and one-file targets suit a 30B model. Glimmer's context is 131,072 tokens, so keep each stage small.

Has anyone shipped a real game made with Muse?

Two stand out.

Minimal Golf VR. Dilmer Valecillos converted a minigolf prototype to VR for Meta Quest 3 using Muse Code on Spark 1.2 contributor, the Unity CLI and the MetaVR CLI. He published the plans and prompts, which makes it the most reusable entry here.

Mobile ball-drop game. A user iterated with the Muse personal agent over a weekend to build an Android game with 10 levels, a combo multiplier and chimes, released free on itch.io. No code editor, just conversation.

Can Muse play video games?

Yes, and these are some of the odder entries.

• Muse plays Sonic: a Muse agent downloaded a Sega Genesis emulator on its own and played Sonic the Hedgehog. The user supplied the ROM.
• DungeonBench: models navigate a 10x10 dungeon. Glimmer (medium) scored 10 of 12 with 2 illegal moves.
• LLMs play MTG Commander: Glimmer defended its title against Kimi, DeepSeek and Minimax M3 in round 2.

Why do some Muse game builds fail?

MindStudio's hands-on test of Spark 1.3 asked for a game clone and got "a cube shooting at other cubes" (MindStudio). Compare that with AstraVanguard's 25/25 automated checks and the difference is mostly process:

1. Effort level. The best Spark results ran at xhigh or max. Morgan Linton's VulcanBench run found serious issues at lower effort.
2. A test loop. Letting the model run the game in a browser and check itself catches broken controls before you do.
3. Staged plans. The 7-stage arcade clone approach gives a smaller model room to recover.
4. References. The Lies of P build started from screenshots.

What does a good Muse game prompt include?

Looking across the successful builds, the prompts that worked share a few traits:

• A named genre and target. "Single-file Three.js platformer" beats "a fun game."
• Concrete mechanics. The voxel game lists terrain, crafting, hunger, a day-night cycle and zombies.
• A definition of done. AstraVanguard's 25 browser checks gave the model something to test against.
• Art direction or references. Screenshots for the Lies of P heart, sprites added later for the pirate platformer.

Which Muse model should I use for a game?

Need	Pick
One-shot browser game, best quality	Muse Spark 1.3 at max, via Muse Code or the Meta Model API
Cheapest cloud runs	Spark contributor tier ($0.10/$0.20 per million tokens; Meta may train on it)
Offline or private	Muse Glimmer 30B, under 20GB at 4-bit per Meta
No code at all	The Muse personal agent, like the ball-drop game

Pricing from Meta's docs.

Browse everything in games and real time. If you shipped one, submit it.

Frequently asked questions

Can Muse Spark make a game from one prompt?

Sometimes. AstraVanguard 3D and a pirate platformer were reported as one-shot successes at high effort, while MindStudio got a weak result from an open-ended prompt. A precise spec and a self-test loop make a big difference.

Can Muse Glimmer build games locally?

Yes. Builders have run Glimmer 30B on single consumer GPUs to produce one-file games, including Tetris and Flappy Bird clones and a 7-stage arcade clone.

Has anyone made a VR game with Muse?

Dilmer Valecillos converted a minigolf prototype to Meta Quest 3 VR using Muse Code with the Unity and MetaVR CLIs, and published his prompts.

What engine do Muse game builds use?

Most catalog entries are single-file Three.js games in the browser. Others used Unity, Godot or C++.