Minecraft Web

Run Minecraft 1.21.11 with Fabric Loader & instant peer-to-peer multiplayer directly in your browser.

Pick Local Folder

Player Username

Initializing... 0%

1. Browser JVM

2. Game Jars

3. Filesystem

4. Game Assets

5. Knot Client

Download full sounds pack (~100MB, uncheck for instant boot) Include music (~220MB extra)

Essential textures & panorama always stream (~2.6MB). Chunk view distance 4 & fast graphics pre-configured for smooth browser FPS.

Instant Multiplayer (Zero Setup)

100% In-Browser • WebRTC

Enter your friend's Room Code below (or open their invite link) to connect directly:

Enter a room code or paste an invite link

Live Output Console

Minecraft 1.21.11 client

Remapped intermediary bytecode running with Sponge Mixin 0.8.7, MixinExtras, and startup optimizations configured for the browser runtime.

Intermediary Mixin 0.8.7 KnotLoader

Custom native engine

Clean-room JavaScript implementation of GLFW window events, pointer lock, WebGL2 rendering pipeline, and STB image decoders.

WebGL 2.0 GLFW Input Pointer Lock

Java 17 WebAssembly

Browser JVM with instant WebRTC peer networking, Unsafe atomic operation polyfills, and bytecode rewriting for records with array components.

Java 17 WebRTC P2P IndexedDB /files