"Nonphotorealistic Rendering," It's Called

That whole field of not-lifelike 3D imaging is called Nonphotorealistic rendering (NPR). Computer types have no use for proper hyphen usage, as I've also found in my day job.

Anyway, it's a whole field of research, and it has resulted in NPR Quake!



Now we're talkin'.

Here's a roundup by Craig Reynolds with lots of NPR resources.