I finished with a few hours to spare, which was nice. I would have liked to have had a little bit more time to polish the sound effects and add better music, but overall I am satisfied with how it turned out.
The relation to the theme Tiny World is that the puzzles involve "quantum entanglement". It's pretty far from real quantum entanglement, but basically you try to get a laser to get to a destination through the user of mirrors and filters. The catch is that they are "entangled" - their positions and/or orientations are tied together.