Nice presentation, no substance.
I can't give this any more than a 3/10, and all three of those points are for the visuals and the relative level of polish. You have a nice, fresh looking art style and a sleek looking UI. But the game has no substance.
The biggest problem is that the levels just aren't fun. Very poor level and puzzle design. You just kind of stumble through the puzzles without any real thought or challenge, do you see what I mean? End result: boredom.
More specific problems are the controls, which are frustratingly slow and floaty. The music is very poor. It gets on your nerves almost immediately and just isn't very listenable. Having good music DOES matter, particularly in puzzle games.
The level design sometimes suffers from elementary mistakes like pitfalls that you couldn't see because there's scenery in the way (as in the very first level) or ways in which you can get a character stuck and have to restart the level, which you fall into by mistake far too easily, sometimes as a result of just trying to explore the level. Mechanics, like switches and so on, are introduced somewhat haphazardly without proper introduction, causing some of the early levels to be a little bewildering at first.
Overall, just a very bad game.