This prototype could potentially become the next popular puzzle game if you invest more time into it, the concept is simple yet original, good idea 😀
The game lacks a little bit of polish in my opinion. It feels a little slow and clumsy to play, and sometimes the controls were playing against me. I think that you should limit the variety of boxes to just 4 or 5, I spent a long time waiting for a matching box to fall while playing. I also think that matching boxes should automatically merge if they are touching each other and they are in the same size, it would make the game feel more dynamic.
Keep working on it guys, this game has potential, now you have to exploit it even more! 😊