This was a really cool take on the theme for cultural learning and just all around enjoyment! I'd love to see this taken farther to a full fledged game!
If you do take this farther, I would love to see the blocks still bonk into each other incorrectly. I know this would take come further exploration though for how to show faulty placements with hidden pockets, perhaps an x-ray or cross-section?
Also some quality of life would be nice, for instance a "Next Level" button, pressing space to make the blocks close, etc.
I really enjoyed this and hope you keep going until you have a full game!