Built a walkable 3D library of 200 public domain books
libraryafterdark.space
libraryafterdark.space
skeuomorphism for interaction systems is usually not the way. useful for communicating key metaphor, but not for overall navigation.
More rigorous would be deconstructing the inherent constraints of the problem space as well as deconstructing the goals the system should have: is it to discover interesting books? Is it to facilitate research? Is it to enable seeing connections across genres or languages, etc. Those things, and the tradeoffs they bring, should drive your information architecture, navigation, and representation.
Great user experience is more about interaction design (that's effective for the problem to be solve) than visual design. The interaction should be molded to the problem space, rather than the other way round.
More bluntly: the 3D walk around the library is cute, but doesn't serve a purpose (as far as I can tell).
there's probably some psychology at play worth considering too.