[JoeDaDude]

Thanks for posting, will have to try it out later. I hope it works with my HP Reverb through Windows MR and/or Steam VR.

Re: pedagogy. Here is an anecdote. The very old Java game linked below is a 4d puzzle where players would have to rotate a tesseract to pass a ball through a hole. Comments made at the time were that players would fumble for a while but would eventually "get it" and after that the play was simple and obvious. I never got to that point. Maybe I'll fire it up and see if I can do better now.

http://harmen.vanderwal.eu/hypercube/