DOOMQL: A Playable Doom-Like in 2,000+ Lines of Pure SQL, Built With GPT-5.6 Sol — Simon Willison Amplifies and Ships His Own Sol Code

simonwillison.net·medium signal

Willison's July 14 blog spotlighted DOOMQL (cedardb), a Doom-style engine where SQL owns raycasting, movement, combat, and every RGB terminal pixel — one-shotted with GPT-5.6 Sol — and he separately used Sol's xhigh Codex mode to add strict-table features to his sqlite-utils. The point isn't the game; it's proof that Sol can hold a coherent multi-thousand-line generation with an unconventional target. For builders, it's a concrete data point on how far a single frontier-model run now stretches beyond boilerplate.