One prompt.<br>One shot.<br>Boil down your creativity and vision into your best shot.<br>Submit your promptHow it works

Round 01<br>Jul 13 – Jul 18 , 2026 · winners Jul 19<br>6days.<br>winners.<br>GTA VI copies.<br>(+1 PS5 for First Place)

6 days. 6 winners. 6 GTA VI copies, plus a PlayStation 5 for first place.<br>One prompt in, something spectacular out. Build a whole game, a living world, a toy that feels impossible. The more complex, rich and deep, the better.<br>A year ago this was impossible.<br>The newest models, like Fable 5Fable 5, Opus 4.8, GPT-4.6 Sol, Gemini 3.1 Pro, Grok 4.5, GLM 5.2, DeepSeek V4, Seed 2.1 Pro, Qwen3.7 Max, Kimi K2.6, Muse Spark 1.1<br>build entire apps, games and worlds from a single prompt. No scaffolding. No back and forth. You describe it once, and a working thing comes out.<br>The One Shot Challenge puts that to the test: how far can you and your model get in a single shot?

01The prizes<br>1st placePlayStation 5+ GTA VI<br>All 6 winnersGTA VIone copy each<br>Community favorite1 of the 6One winner spot, decided by your votes, not the jury.<br>And a spotlightSIGGRAPHAll 6 showcased at the Hack Awards, LA, July 19th 6 PM PT.

02How it works<br>01Write one prompt<br>One prompt, as long as you want. It is your whole entry.

02Bring your best model<br>Any provider, your own key. No key? Muse Spark ($20 free) and Gemini give you a frontier model; Groq and NVIDIA hand out free keys too.

03Confirm your email<br>Click the link we send. Nothing runs until you do.

04It runs once<br>One model call. No edits, no retries. Broken still counts.

05It ships, sealed<br>Into the gallery, prompt and model hidden until results.

066 winners<br>Five picked by a jury (Lionsgate AI, Sony, the NBA, World Labs), one by your community vote.

03Under the hood<br>No black box. We run your prompt on our own server for one reason: so every entry is a provable single prompt and single model call, with no edits or retries. Your API key is encrypted, used for exactly one call, then destroyed, never stored with your entry. The result is published in a locked-down sandbox with a hash anyone can verify. Every entry is untrusted code, so it runs walled off and isolated: it can't reach our servers, your data, or any other entry.<br>See the full architecture and security →

04The rules<br>Runs July 13–18. One entry per day, per email: 6 shots total.<br>Prompts and models stay sealed until the results.<br>A jury of AI leaders from Lionsgate AI, Sony, the NBA and World Labs picks 5 of the 6 winners at the Worlds in Action Hack at SIGGRAPH LA on July 19. The 6th is the community favorite, decided by your votes.<br>Anything goes. 3D worlds, games, toys, sandboxes and experiments are encouraged.<br>Your entry must be the self-contained output of your one prompt. Libraries (three.js and the like) from the approved CDNs are fine, but loading your own external or mutable code bundle, so you can keep editing it after submission, is grounds for disqualification.<br>Use only assets, code and fonts you are licensed to use. Free and open sources, like the CC0 textures and models on Poly Haven, are perfect. Here’s how to load assets from the CDNs.

Submissions close in5days<br>13hrs<br>21min<br>28sec

The challenge, live<br>shots fired

tokens used

0.0hrs<br>models have worked

05Latest entries<br>See all 14 →<br>View entry♡Bingo Night Grand Prix<br>Zejun Wu<br>model sealedsingle-file

View entry♡Garden<br>model sealedsingle-file

View entry♡Strandbeest<br>model sealedsingle-file

View entry♡Isometric-Scaling<br>Felix J<br>model sealedsingle-file

View entry♡Maestro: Musician Street Fighter<br>model sealedsingle-file

View entry♡Subway<br>model sealedsingle-file

View entry♡Concurrency: Time Blending Game<br>model sealedsingle-file

View entry♡1Spaceship Arcade Shooter<br>Felix J<br>model sealedsingle-file

View entry♡Neo<br>model sealedsingle-file

06Questions<br>Is it free to compete?Yes. Entry is free and there is no fee to us, ever. The only cost is your own model run on your own API key (BYOK). Bring your best model and go. If you’d rather not pay for tokens, there are solid free options too. Meta’s Muse Spark gives every new account $20 in free credits, plenty for many one-shot runs on a strong frontier coding model (US-only for now). Anywhere else, use Google Gemini’s free tier, a frontier model too (rate-limited, but plenty for one shot a day). Or grab a free key from Groq or NVIDIA, which run open-source models, so tougher odds but a great prompt can still win.<br>Enter my API key? Are you CRAZY!?Fair reaction. Here is the deal. Your key is encrypted the moment it arrives, used for exactly one model call, then permanently deleted. It is never stored in plain text, never written to logs, and never shown in any page or API response. Tip: create a fresh key with a spend limit and revoke it right after you submit.

Why run it on our side at all, instead of letting you paste in a result? Integrity. This is a one prompt challenge, so every entry has to be a provable single prompt and single model call, with no edits, retries, or chaining. Running it on our server with...