DOOMQL Reborn in SQLite: Peter Gostev Builds a Recursive-CTE Ray Tracer with GPT-5.6 Sol

Simon Willison·low signal

Willison highlights Peter Gostev's DOOMQL, a Doom-like where SQL owns movement, collision, enemies, combat, progression and every rendered pixel — a recursive-CTE ray tracer running as a ~terminal Python script, built with GPT-5.6 Sol. It's a SQLite-engine riff on CedarDB's original pure-SQL DOOM (Lukas Vogel, 2025). Mostly a fun stress-test of what a modern model will attempt inside a database, but a striking demo of SQL-as-compute-engine.