Late as usual 🏳️‍⚧️さんのイラストまとめ

The entire scene is using the same geonodes + shader, but here's it on just a sphere for illustration purposes.
Comparing with/without the brush strokes from geometry nodes. As you can see the underlying ("normal") shader does most of the work still.

Various random viewport closeups to show off the paint shader solution I came up with. I'll explain a little how it works below, but it uses some custom render stuff, so won't work in regular blender.

Nora's Lea model is so cute🥹

I slapped the scene together fairly quickly with geometry nodes,
and @HeyNoraNora made this adorable n64 Lea model :)

The rest of the setup is "composited" in the viewport, nothing crazy just some meshes and transparency tricks (e.g. for cutting the text out of the black bar, it's one object with the text in front and "Show Backface" disabled)

The same voronoi texture is used to add the blocks, and finally the input coords are distorted for the fisheye 3D effect
There's the whole nodetree:

The city shader is using some custom edge detection stuff for highlights, but other than that it's just a colour gradient and a regular diffuse shader

Idk what the style is meant to be lol

@johnotron604 here's it with just slapping some noise on as an alpha mask