As of: 2026-10-09 19:24 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/v/buildwithsid-opus-5-5-browser-minecraft-x/

# Browser Minecraft clone over a violet sunset sea, made with Opus 5.5

siddharth (@buildwithsid), 22 September 2026, X. 137,805 views as of 9 October 2026.
Kind: Made by AI.
Watch: https://x.com/buildwithsid/status/2102461886247948571

## Why it is here

Listed in the claudevideo.org community catalog; ~138k views on X by 2026-10-09. Length 1:10.

## Made by AI

- Made with: Claude Opus 5.5
- How we know: X post (2026-09-22): 'made Minecraft with Opus 5.5  this is literally running in a browser, why does it look soo good 😭😭  https://minecraft-iota-coral.vercel.app/'
- Human role: Creator built it with Opus 5.5; the game is online at minecraft-iota-coral.vercel.app.
- Pipeline: Opus 5.5 → three.js browser game → 1:10 capture
- Series: Agent-built game or 3D world (the video shows the result)

## Related

- 2026-09-22: [Anthropic releases Claude Opus 5.5](https://postcutoff.com/e/2026-09-22-claude-opus-5-5/)