Ah, these demos were so popular back in the scene days. There was the fire from the bottom [1], the tunnel, the rotating 3D model, wind and particles effect [2], etc. I recall writing a few of these myself in asm. Great to see scene demos brought to modern tech.

  [1]: http://www.pouet.net/prod.php?which=69954
  [2]: http://matthewdoucette.com/realtimegraphicsdos/