KevinCraft

KevinCraft is a free multiplayer block-building game that runs in your browser — computer or phone. No downloads, no accounts, no game engine: a hand-built voxel renderer, live WebSocket multiplayer, and one persistent world that remembers every block you place.

It exists because building the engine is the fun part — Three.js rendering, a custom Node WebSocket hub, and real-time state sync, shipped as a public playground anyone can walk into.