I can't play this online (no webgpu) but from the description and comments here it sounds like the 4D Maze from 2002!
The advantage of this one is that it offers a stereoscopic (red/blue) view of the 3D retina. Not sure if this one does too.
The advantage of this one is that it offers a stereoscopic (red/blue) view of the 3D retina. Not sure if this one does too.
Also, here's a CPU-based prototype that led to the Hyperhell engine: