That's a very appealing aesthetic (possibly because I'm old enough to remember downloading games over a 2400 baud modem!). Very nice work!

That video looked great, and (at least for me) felt very evocative. In the section where the roof was too low, I started feeling claustrophobic and cramped.

Those rock and sandy-floored caverns, and the cavern with boulders (which are gorgeous!) made me think I'd love playing a Myst or LucasArts-style adventure game using this as the renderer. Spelunking through caves, or archeological digs, etc.

Can't wait to see where you take this!