Decent proof of concept. I would prefer not to complain about a (visually) well-made, small game without monetization. Nonetheless, I don't think I can recommend this game other than to showcase the difficulties of designing good puzzles.
Let's start with the positives: The game runs smoothly and has a cohesive and (in my opinion) appealing visual style. In terms of gameplay, It (mostly) manages to explain its mechanics in an organic, intuitive way without requiring any text. I think the first few levels of each section are good examples of of how to seamlessly introduce new mechanics to the players. Unfortunately, that's where my praise ends.
I don't think it is a good puzzle game. While it proposes a few interesting mechanics, it does very little with them. I think the main problem is that the "difficulty" of the puzzles in this game isn't derived from increasing the complexity of the interaction between mechanics but from simply increasing the number of elements in the puzzle.
Level x.8 is "more difficult" than x.1 in the same way that performing five multiplications is "more difficult: than performing 1: It's not an intrinsically more complex process; it's simply longer and more tedious.
Consequently, you will be able to figure out the puzzle aspect of each level fairly quickly, and you will spend most of your time simply trying to execute the required actions in the correct timing and order.
Clearly, the developers have the skills to pull out well-made and polished games. Hopefully, after this is out, they can get the attention and the funding to create a fully developed product.
