Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra)

Moonlight and Mayhem is a fully working browser game built using a single prompt that was originally generated by GPT-3 and DALL-E four years ago. The project was created by Codex Desktop running the GPT-5.6 Sol Ultra mode, which utilizes aggressive sub-agents, as a follow-up comparison to an earlier version built by Claude Fable 5.

While the Claude version featured a single raccoon collecting items in a backyard, the Codex version closely matches the original heisty premise. Players control a raccoon inside a museum, tasked with rescuing two crewmates so they can stack on top of each other and steal a golden sardine from its display case. The GitHub repository includes all textures and prompts generated using gpt-image-2.

The coding session took 52 minutes. The initial one-shot output contained a bug where each raccoon had a giant black sphere floating above its head representing an enlarged eyeball, which Codex failed to catch during development. A human fixed this with two follow-up prompts asking why the spheres were there and instructing the system to fix them.

This experiment demonstrates the capability of advanced coding agents to generate complete, playable games from complex text prompts while highlighting the current limitations in visual self-correction, which still requires human intervention to spot and resolve graphical glitches.