Submissions open from 2026-09-18 11:00:00 to 2026-09-21 11:00:00
Submissions due in
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72 HOURS. ONE GAME. BREAK THE MODEL.

Build a playable game with Codex, GPT-6 Astra, and GPT Sites.

AI can move fast. You bring the taste and direction.

No Astra access? Use the strongest Codex model available and name it in your submission.

THE MISSION

Ship a public, free game in 72 hours. It needs one original mechanic that players can see, control, or feel.

THEME / BREAK THE MODEL

Push past the obvious. Reject the safe answer. Or turn an AI mistake into great gameplay.

PICK YOUR TRACK

Choose one primary track. Every track can win Best Overall Game.

01 / LIMIT BREAKER

Use Codex, Astra, and GPT Sites to build something technically bold that still runs and plays.

02 / CREATIVE CHAOS

Make the funniest or strangest idea you can turn into a game people want to keep playing.

03 / TINY MASTERPIECE

Polish one small mechanic until the controls, feedback, sound, and pacing feel complete.

SHOW YOUR WORK

Your Build Receipt needs four things:

  1. Your original player fantasy
  2. What the AI got wrong
  3. The human decision that changed the game
  4. The final mechanic in action

Use a short devlog, four screenshots, or a video of 45 seconds or less.

HOW WE JUDGE

We reward a memorable player experience, an original mechanic, strong human direction, and a stable finished build.

AWARDS

  • Best Overall Game
  • Limit Breaker Award
  • Creative Chaos Award
  • Tiny Masterpiece Award
  • Best Human Direction
  • Best Model Mistake Turned Mechanic
  • Best NUS Build

One game may win more than one award. Current prizes are custom digital winner badges and featured placement in the results announcement. No cash prize is currently promised.

THE RULES

  • Use Codex for development. Use GPT-6 Astra when available. Use GPT Sites to prototype, present, or document your game.
  • Build a new game during the jam window. Solo developers and teams are welcome.
  • Your itch.io submission must be public and free. Browser builds are preferred.
  • Disclose your AI tools, models, and external assets. Credit every asset and respect its licence.
  • Test the uploaded game before the deadline. A concept video without a playable build is not eligible.

The jam is open worldwide. NUS students and teams can also compete for Best NUS Build.

MAKE IT YOURS

Do not submit the first thing AI produced. Submit the game only you would direct.