4K-mp

Minecraft 4K with online multiplayer support in under 8kb
Play Online: https://4k.bleach.dev/

Showcase

https://user-images.githubusercontent.com/36450388/199333801-ebf0c6b3-0c59-49bb-8b7a-9e7501e9942c.mp4

Controls

WASD - Move around
LMB - Remove block
RMB - Place block
1-7 - Select block type

Notes

To make your game publicly accessible from the Java version you need to forward port 25575 to your computer in your router settings.
The Java and web version are not cross-compatible due to the way P2P browser connection works.

Disclaimer: I am not qualified to write networking code, you probably shouldn't let random people connect to your computer.