Why attempt something that has abundant number of libraries to pick and choose? To me, however impressive it is, 'browser build from scratch' simply overstates it. Why not attempt something like a 3D game where it's hard to find open source code to use?
Also graphics acceleration makes it hard to do from scratch rather than using using the 3D APIs but I guess you could in principle go bare iron on hardware that has published specs such as AMD, or just do software only rendering.
There are a lot of examples out there. Funny that you mention this. I literally just last night started a "play" project having Claude Code build a 3D web assembly/webgl game using no frameworka. It did it, but it isn't fun yet.
I think the current models are at a capability level that could create a decent 3D game. The challenges are creating graphic assets and debugging/Qa. The debugging problem is you need to figure out a good harness to let the model understand when something is working, or how it is failing.
This is definitely correct. I had a dream about a new video game the other day, woke up and Gemini one-shotted the game, but the characters are janky as hell because it has made them from whole cloth.
What it should have been willing to do is go off and look for free external assets on the Web that it could download and integrate.