590 Claude Code sessions, 20B tokens later: a 30-hour browser RPG built almost entirely by agents
Comprehensive-Dig-31 · reddit · 2026-11-04
A Reddit developer shares Kithland, a monster-taming RPG built in 4 days with Claude Code writing nearly all of it — playable in browser on phone/desktop.
Key numbers
- 590 Claude Code sessions plus 270 subagents, up to 20 agents running at once
- 450 hours of agent time compressed into 90 hours of real time; 20B tokens consumed (91M output)
- $7,500 at API list prices; 3,400 commits, mostly Opus 5.5 with Sonnet 5.5 for smaller tasks
What it built: a full 10-chapter story across four seasons-frozen regions, 88 maps, 83 creatures, 83 songs, 25,000+ words of dialogue — all art and music generated as code, no image/music models.
Where agents shined: screenshot-and-fix art workflows, playtesting its own story and cutscenes, staying coherent across 10 chapters of lore.
Where the human was essential: taste (movement feel, art direction, naming), puzzle clarity for button-mashing players, and constant mobile performance tuning.
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