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JackLabs.ai

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

JackLabs.ai — Demo video

Primordial Paradox is a complete, playable NES-style JRPG, made by one person directing a team of AI agents. It runs from title screen, to intro text crawl, to the Southampton Town Quay map, to battles, to a boss fight, to credits with two endings (Percy killed or spared), with original chiptune music for every scene. The story: a family in England learns they are the reincarnated Greek gods, during a suspicious hurricane at Southampton Town Quay. Every building has something dry to say, in the spirit of Mother and Undertale. Battles are Undertale style: you can TALK to fill a Mercy Meter and spare the enemy, or kill. Your choices decide the ending and change the credits and the music. The problem it solves is mine. I have been an aspiring game developer since I was 12, but school and career endeavours took priority over passions. Diving deep into code, music, art, level design, etc. enough to make a complete product would have taken me years. However; the age of AI has enabled me beyond my wildest dreams. I never wrote the code, drew the art or composed the notes by hand for this project: I directed agents with intent, and they did the work. The key idea is that a model proposes and a checker refuses. Hardware rules are enforced by code: NES palette and tile limits are measured per frame, the score must pass Bach counterpoint checks, the battle model is formally verified, and 2,724 tests pass. Every README is written by Meta's Muse Spark 1.3 through a gate that fails on hand edits. Built during the event (Oct 26 to Nov 4) on top of a skeleton engine: about 1,312 new files. The engine repo is public with a tagged pre-event baseline, and this repo attached below holds only the event work with real commit dates, so judges can diff exactly what was built in the window.

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