In my first CS course in high school, I learned C++. 
The prof said last year someone tried and failed to make a 3D maze, so I tried too, and succeeded. 
I no longer have the code, but I made a quick mockup using python. 
This is identical, except different maze, only 1 maze (in the original I used a 4D array of many mazes),
and up/down is q/e not space and shift. 

Run it in the comand line, you might need a couple pip installs

Enjoy!