{
  "id": 277705,
  "title": "Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra)",
  "url": "https://urgent.news/2026/08/07/moonlight-mayhem-raccoon-heist-by-codex-gpt-5-6-sol-ultra",
  "topic": "ai",
  "section": "AI",
  "published": "2026-08-07T19:18:09.000Z",
  "source": {
    "name": "Simon Willison",
    "slug": "simon-willison",
    "url": "https://simonwillison.net/2026/Aug/7/moonlight-mayhem/"
  },
  "original_language": "en",
  "account": "On a Wednesday, a Raccoon Heist game was created using Codex Desktop and GPT-5.6 Sol Ultra. The game was generated by posing the same prompt to Codex that was used previously with Claude Fable 5. The game, titled Moonlight & Mayhem, is available on GitHub along with the textures and prompts generated by gpt-image-2. The original game description from GPT-3 had the raccoons robbing banks and stealing art in a backyard setting. However, GPT-5.6 Sol Ultra transformed the game into a museum heist where the raccoons rescue their crewmates and attempt to steal a golden sardine from its case. Despite the impressive transformation, there was a bug in the final version where each raccoon's eyeball was enlarged to the size of a giant sphere floating above their head. This bug went unnoticed during Codex's 52-minute development process. The full transcript of the Codex session is available in the repository.",
  "summary": "Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra) On Wednesday I wrote about One-shotting a Raccoon Heist game using Claude Fable 5 , where I had Claude Fable 5 build a full working game from a premise I generated with GPT-3 and DALL-E four years ago . I decided to pose the exact same prompt to Codex Desktop running GPT-5.6 Sol Ultra - the mode where Sol makes aggressive use of…",
  "key_points": [
    "Raccoon Heist game created using Codex Desktop and GPT-5.6 Sol Ultra",
    "Moonlight & Mayhem available on GitHub with textures and prompts",
    "Bug enlarged raccoons' eyeballs during 52-minute development"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}