Practitioner (own blog/paper) New product (browser game)
Token Clicker: a 33,716-line browser idle game shipped 19 hours after its specs with Claude Code
Julien Renaux committed the design specs for Token Clicker, an idle game mocking the AI boom, at 23:11 on 23 September and shipped it at 18:50 the next day. It has 332 upgrades, 273 achievements and 448 fake headlines in seven languages, written by agents in parallel and checked by a test suite for the jokes (including a 156-entry denylist of real people and products) alongside engine and pacing tests.
The numbers (as reported)
| Specs to launch | 19 hours 39 minutes wall-clock (night included) |
|---|---|
| TypeScript in src/ | 33,716 lines |
| Tests | 1,758 unit, 34 pacing, 28 end-to-end |
| Languages | 7 |
| Post-launch local cost | ~$264 at API prices (24–28 Sept) |
Facts
- Company / subject
- Julien Renaux (independent developer)
- Tools
- Claude Code
- Codebase
- greenfield
- Work type
- New product (browser game)
- Stack
- TypeScript, Vite, GitHub Pages
- Published
- 2026-09-28
- Last checked
- 2026-10-19
Caveats
The 19 hours excludes writing the specs. Launch day ran in Claude Code on the web and isn't in the cost figure; the ~$264 covers only later local work. The game promotes the author's TrendingDevs brand.