One Rule Grows a 46,367-Branch Forest: Opus Codes an Entire Short Film

Developer prasenx gave Claude Opus 5.5 a single L-system rewrite rule, which recursively generated a 45-second, fully code-driven film with 46,367 branches—trees, ferns, lightning, river deltas and lungs—all open-sourced as the one-rule project.

2026-10-21 ~ 2026-10-21 · 4 related posts

• Watch a forest grow from a single rule using Claude — prasenx · 2026-10-21
• One L-system rule grows a tree, fern, lightning, river and lungs in a 45s code film — prasenx · 2026-10-21
• One rule in, 46,367 branches out: Opus 5.5 grows an entire forest in pure code — prasenx · 2026-10-21
• One rewriting rule grows a 46,367-branch forest — a code-only film by Opus, open sourced — prasenx · 2026-10-21