I made a minecraft-y voxel world in WebGL2 a while back... just realised it's not on the blog. Now it is!
The code is on GitHub, and my favourite thing about it: pure JavaScript - no dot files, no pacakge.json, no build files, no... nothin'. Just double click index.html (and/or view-source) - like the old days! I'm pretty happy that JavaScript Native Modules are finally ubiquitous.
I'll hopefully write this up a bit more soon - because I want to remember how I did the chunk generation! The basic architecture was inspired from this excellent (and massive!) WebGL series by SketchPunkLabs.
The voxel world also served as a base for my spooooky simultaneous 2D/3D game: Obaké.