This game gave me a nostalgia for flash games.
It presents a good mechanic for a puzzle game, and makes the most of it throughout the levels. In addition, several new objects are revealed that enrich this mechanic.
The art style works well with the game, but decisions like level 3 didn't go down well, I don't know if it's my monitor, but the zoom out of the game caused the pixels to become disproportionate and jagged.
There is also a bug present in level 4, in the right part of the screen it is possible that the rail does not change correctly when it hits the wall, making you fall into a part where you cannot get out.
All in all, it's a really good game, I loved playing it, it would be the kind of game I would play for hours on the weekend when I was a kid.