Presentation video:
Also there is a built in BJS template ready to spin in less than a blink of an eye.
Colyseus demo
(ECS’ish BJS 
COLYSUES)[WebNatives - Explorer]
WASD to move
Can be played with ( PIXI COLYSEUS)[WebNatives - Explorer] because it uses same backend and also shares a lot of the client code apart from the rendering.
Everything is open sourced and can be used locally using the (Standalone Devkit)[GitHub - webnativesapp/standalone-devkit: Webnatives.app standalone cloud developer devkit]