Thanks for the feedback!
I didn't know Hyperrogue before, but it looks intense, definitely worth a try.
I think the main difference between the two is that my game's geometry is indeed Euclidean but in a higher dimension.
Don't worry about the objectives. Unfortunately, they came after the initial idea of creating and displaying a traversable six-dimensional perfect maze. The only goal is to go from 2,2,2,2,2,2 to 0,0,0,0,0,0, and that's it. NPCs in their current state are more like distractions than integral parts of the experience.
I always knew that I have an unusual attraction to surreal puzzles like this, and can't expect that everybody has the same, so thanks for giving it a try.