Neat game! I included it in my compilation video series of all of the creations made for the ProcJam 2017, if you’d like to take a look. :)

The first time I got stuck just before the top because no green block generated on the top two layer, leaving me at the bottom of two-units-deep holes I could not jump out of. Other than that, it worked very well for a 3D maze, the size was just enough to get lost a little without it becoming too frustrating. Great job!