An unofficial fan recreation of Minecraft rd-132211, rewritten as one freestanding C file and compiled to an 18 KB WebAssembly module. The tab icon is also a live view.
WASD move, mouse look, space jump, left click dig, right click place, 1-7 or wheel picks a block, R respawn.
On a phone, drag the left half to walk and the right half to look. Tap to dig.