Oh this was such a cool idea, and I love the aesthetic you chose! You were able to create some pretty tricky puzzles, and I had a fun time guessing what the relationships were. (I may or may not have spent waayyyyy too long pressing the buttons in the pitch-room before I realized I had forgotten to turn the sound on lol.)
I also learned that I should have paid a lot more attention in 7th-grade geography class. I really need to brush up on countrys' flags and square mileage. For the life of me, I couldn't figure that one out. Let me know if I'm just way over thinking it.
I look forward to seeing whatever you make next!