✔️ I really liked the main mechanic, it worked really well with the puzzle mechanic; it would get more difficult as pieces got stuck, but at the same time you needed pieces to get stuck to win. This really led to some thinking that needed to be done.
✔️ The game is also very simple to understand.
✔️ Good amount of levels and difficulty
➖ I think the look of the GUI could use a bit of work, it doesn't look the best in my opinion.