The game is on a good path to be very good but it has some problems.
The mechanics are pretty clever and the levels are pretty well put together.
The graphics are also pretty nice, the little cube characters are cool (kinda get some meatboy vibes).
However I really didn't like one thing about the game and it's the dialog. It's not poorly written or anything, it's just that I hate it when you get interrupted every 3 seconds by a character talking to you, especially if it's to say what you have to do (really reminded me of fae on skyward sword telling you the solution to the puzzles). That makes the rhythm of the game frustrating, after each interaction with something you get 4 lines of dialogues to tell you what to do next.
Other than that the rest was pretty solid, hope this can help you improve the game :)