http://www.scene.org/awards.php (search for “Best 4k intro”)
Those are “Intro demos”, just displaying amazing graphics and playing audio, all done procedurally. It’s amazing! Makes me feel ashamed for our little 4k competition 
Well, 4k games are more fun than 4k intros. 
That said I watched that planet thing and that was pretty amazing. Dynamic lighting and something that seemed like HDR? How do they do this?
That sketch-like one was also really cool, and ran really smooth. Are they all using software renderers or are they able to actually use OpenGL for this? (sorry, stupid question, I really don’t know much outside of Java though).