Six-Sided Puzzle - Cities

"Six-Sided Puzzle - Cities" is my the very first (and, I hope, the very last) Flutter project.
It's a puzzle game - quite simple but exciting. The rules are plain - you have a picture, divided into hexagons and you need to assemble it (each hexagon can be tapped or moved).

I've included several screenshots below so you can get an idea of the gameplay.

The settings screen
The game field