Got bored and spent some time coding rudimentary framework at http://meshpage.org with the following features: - 3d models - sprites - textures/materials - async/concurrent loading from network - .obj/.stl/.ply/.glb loading code - gltf skinning/skeletons/rigging/animations - progressbars/score counters/fps counters/quake movement - html5 webassembly support - builder tool for designing scenes - ability to package games - exporting finished games to your own web server

Now just waiting for the theme to arrive...