There was a superb demo I can't seem to find again, one of the scenes was a giant spaceship floating in the distance above a desert, and some silhouette people were walking atop a dune along with goats or some other animal. I seem to remember there was some article from the author about the implementation. If anyone can throw some link in my general direction then I'll throw back some <3 in theirs :)

IMHO not very many 64Ks have reached the amazingness of this 11 minute one from 2000: https://www.youtube.com/watch?v=Y3n3c_8Nn2Y

...and for 4K, this one from 2009:

https://www.youtube.com/watch?v=jB0vBmiTr6o

Yeah, the maps of Comanche were just run-length encoded and it took me an evening to reverse-engineer it. Nice to know, that I am not the only one who were able to extract them.

But even without the pyramid it is very obvious, that these maps in your demo were from the game Comanche.

I remember heartquake! I could probably play the credits part of the music by memory. I never realized the terrain was the actual comanche terrain.