I just stumbled into a pixel world with intriguing puzzle, a stack of returned books with dubious titles, magical lift/stairs/ladders and actually the entire corridors of the building that didn't work normally like what they seem, and of course the ability of staying alive after jumping from third floor instead of taking the magical lift.....
...and felt a pang of regrets to left/close the experience. I would love to be a real librarian or at least a regular visitor of this paradoxical site :D