Universal Music is launching an AI music platform with ElevenLabs29m ago Now everyone can put data to work1h ago Robotics Startup Skild AI Hits $100 Million in Revenue Run Rate38m ago Is AI The Silver Bullet For Project Portfolio Management?38m ago An Anthropic researcher just quit, saying OpenAI and Anthropic are 'gambling with our lives'39m ago Cohere Debuts Open-Weight 218B Mixture-of-Experts Machine Translation Model41m ago Bending Spoons agrees to buy Miro for $1.355bn, weeks after Airtable44m ago Winmau And Autodarts Bring Smart Scoring To Your Dumb Dartboard45m ago Typewise orchestrates customer-service AI agents51m ago Zuckerberg tells Sources labs holding back AI models is ‘quite dangerous’1h ago Nintendo's latest sale is 'made possible' by the tariff refunds it's hoarding1h ago Meta Announces Muse AI Agent for Personal Tasks and Organization1h ago How To Secure The AI Features Hiding Inside Your Sanctioned SaaS Apps1h ago Instagram now lets you add tagged photos to your profile grid1h ago

Universal Music is launching an AI music platform with ElevenLabs29m ago Now everyone can put data to work1h ago Robotics Startup Skild AI Hits $100 Million in Revenue Run Rate38m ago Is AI The Silver Bullet For Project Portfolio Management?38m ago An Anthropic researcher just quit, saying OpenAI and Anthropic are 'gambling with our lives'39m ago Cohere Debuts Open-Weight 218B Mixture-of-Experts Machine Translation Model41m ago Bending Spoons agrees to buy Miro for $1.355bn, weeks after Airtable44m ago Winmau And Autodarts Bring Smart Scoring To Your Dumb Dartboard45m ago Typewise orchestrates customer-service AI agents51m ago Zuckerberg tells Sources labs holding back AI models is ‘quite dangerous’1h ago Nintendo's latest sale is 'made possible' by the tariff refunds it's hoarding1h ago Meta Announces Muse AI Agent for Personal Tasks and Organization1h ago How To Secure The AI Features Hiding Inside Your Sanctioned SaaS Apps1h ago Instagram now lets you add tagged photos to your profile grid1h ago

Dev2 min reading time

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

Simon Willison's WeblogPublished Aug 7, 2026

Codex Desktop running GPT-5.6 Sol Ultra created a more advanced version of the Raccoon Heist game originally made with Claude Fable 5, adding complex gameplay and fixing bugs through iterative prompts.

#agentic-software-development #claude-fable-5 #codex-desktop #game-development #gpt-5-6-sol-ultra

More in Dev

Dev6 min read

How Credit Genie keeps codebase docs fresh with OpenWiki

LangChain3h ago

Dev19 min read

Article: When Spec-Driven Development Pays Off

InfoQ (AI, ML & Data)7h ago

Dev19 min read

Deploying Qwen3.8-2.4T-A95B on Amazon SageMaker HyperPod with vLLM

AWS Blog18h ago