T.R.S.I. The Red Serpent Invasion

The T.R.S.I. The Red Serpent Invasion entry is a pretty incredible feat for the C64. An Interactive Competition entry for the Evoke demoscene party that doesn't just run smoothly ( It's really impressive ), but it also features texture walls, scalable sprites, and some would say is a very fine Wolfenstein 3D clone, albeit still in demo form.