88 games, 1,300 devs: Inside the open-source AI game jam that crowned 'Snip It'

The Open Source AI Game Jam closed with numbers that surprised even its organizers: over 1,300 signups and 88 finished games, all built around the theme of “EXPANDING.” That’s a conversion rate most hackathons would kill for. The jam’s rule was simple — games had to incorporate at least one open-source AI tool, though proprietary options weren’t banned. The result was a strange, creative cross-section of what happens when developers treat models like Stable Diffusion, MusicGen, and Unity ML-Agents as raw material rather than finished products.

Judges Dylan Ebert, Thomas Simonini, and Omar Sanseviero picked Ruben Gres’s “Snip It” as the winner, with AI assets from Philippe Saade and music by Matthieu Deloffre. The premise is genuinely charming: you wander a museum where paintings come alive, and you snip objects out of the canvases to reveal their hidden secrets. Stable Diffusion generated the assets. It’s the kind of concept that would’ve taken a studio months to illustrate manually — here, a small team shipped it in a game jam window.

What’s notable is how differently each finalist used AI. “Yabbit Attack” pits players against a neural network that adapts in real time using genetic algorithms, with Stable Diffusion handling backgrounds. “Everchanging Quest” mixed GPT-4 for tile placement with the open-source StarCoder for the actual code. “Word Conquest” leaned on all-MiniLM-L6-v2 embeddings and GloVe to generate its map from word relationships. Several entries stacked multiple tools — “Galactic Domination” used five, including ElevenLabs for voices and Soundful for music.

For anyone tracking the open-source AI scene, the jam offers a rare practical dataset. These aren’t demos designed to impress investors; they’re 88 working games that shipped under time pressure. That’s a useful signal for which open models are actually usable in production today — and which ones still feel like research projects wearing a game engine’s clothes. The full list is playable on itch.io, and several entries would hold their own against commercial indie titles.