Old Note 9, Chrome and Firefox.

Non flagship mobile devices could very well choke on one of those pages, but most newer devices should display these pages with little grief.

However, proper recreation of the original graphics would require shaders and much more modern extensive and programmable pipelines, while the relaxed artistic attitude (or just contemporary technical limitations) unfortunately resulted in trashy y2k amateur 3D shooter look. Leaving certain parts to software meant that CPU had to do most of the same things once again. Also, 3D engines were seen as a base for exciting new features (arbitrary 3D models, complex lighting, free camera, post-processing effects, etc.), so the focus shifted in that direction.

In general, CPU performance growth meant that most PCs could run most Doom levels without any help from the video card. (Obviously, map makers rarely wanted to work on something that was too heavy for their systems, so the complexity was also limited by practical reasons.) 3D rendering performance (in non-GZDoom ports) was boosted occasionally to enable some complex geometry or mapping tricks in popular releases, but there was little real pressure to use acceleration. On the other hand, the linear growth of single core performance has stopped long ago, while the urges of map makers haven't, so there might be some need for “real” complete GPU-based rendering.

I'd love to be wrong, so if you have a few examples, I'm all ears.

Additionally this is generated code.

All I'm seeing is they got their hands on the domain, which can be (and was in the past) just part of whatever settlement they agreed on, and the game press spinned that into "Nintendo bought Ryujinx".