This game deserves more Love!!!!
I wanted to quit the game at first, because of two reasons:
1. Why am I not allowed to control anything at first stage? And the control said drag and drop.
2. The control said drag and drop, and the second stage is pressing a button.
In short, the control is so unclear and confusing, forcing people to quit.
Maybe use different colors and add some touch icon to indicate.
But after getting into main game, the puzzles are really good and real engaging!
I can see you putting efforts into designing!
Not gonna lie, this game can make a real good mobile game!
For the stage design, for the first few stages, I think you can give players some more items to overkill, such that people can get used to it.
And one thing I expect is fast forwarding, say by pressing spacebar, just skip through frames x2 , it's easily done in unity.
Again, this game deserves more ratings.