this was such an incredible game to go through! a masterclass in puzzle design! the rules of the game are immediately understood as soon as you make the first couple of moves in the first level, no tutorial needed. then as you progress through the games, both the game adds new mechanics and expounds on unmentioned rules that you didn't have to consider until now, its perfect! there are a healthy amount of levels in the game, with the difficulty curve being smooth but steep, with the last levels of each "set" bringing a level of difficult that is challenging and satisfying once you conquer it! also glad there's the option to skip levels in this game, allows the people here to feel like they haven't missed anything (i still need to go back and finish 2 more levels at a later date).
not only is the game polished but the visual and auditory experience also shares that level of polish! the color palette used here is really pleasant to look at, the colors are not too saturated and the collectable movement pieces use nice accent colors against the green, grey, and darker grey prominent colors (or thats how it feels to me, im not an artist so hopefully im using these terms correctly xd). the texture and flavor added through the use of geometric patterns for things like the shadows, walls and piece UI provide some of that visual spice as well. even just moving around, collecting movement pieces, and hitting walls are all really good to look at! then the accompanying audio to those actions plus the calm music ties everything together so well creating a complete experience!
if this was expanded on into a full release, or even if this was officially released on other digital game distribution platforms in the state that is in, i'd play it in a heartbeat, great work!