WebGPU Prototype under 25 KBs.
Likely is not supported on your mobile browser.
Walk walk around with wasd, open the door with ight click, and swing your sword with left click. You can't harm anything with the sword.
You can also see other players but they aren't animated much at all.
The only two libraries used were for matrix math and sockets, so all the GPU code was handmade at a time when very few resources existed for WebGPU.