World of ClaudeCraft

Project intro

World of ClaudeCraft is a classic-style browser MMO you can play instantly - no download required. Explore the world, take on quests, and tackle dungeons with friends, straight from the browser. The team's own words say it best. Posting on r/ClaudeAI (2026-06-12), the Levy Street team wrote: "I vibe coded the first MMORPG with Fable 5". The game is the research project of Levy Street, a New Zealand company working on reinforcement learning - an unusually serious engineering effort behind a fully playable online world. It's also genuinely alive: the GitHub repo levy-street/world-of-claudecraft has 2,302 stars and 732 forks, with 79 releases shipped - the latest, v0.44.6, landed 2026-10-09. The tech stack is stated verbatim on the README badges: TypeScript, Three.js, Vite, and PostgreSQL, built around "one deterministic TypeScript simulation core". If you like persistent online worlds in the browser, this is the one to try.