I'm very much on the fence about recommending or otherwise this game. On the positive side, It has a beautiful hand-drawn 3D view art style & shading, in which the two characters, the Hero and his love Aiko, though very small and without much detail, can communicate action & emotion (I particularly liked the way the Hero looks around while travelling on a moving platform in the Factory level). The puzzles, based around manipulating elemental forces (fire, water, ice, wind etc) and objects such as cubes, ramps and pressure plates, are clever without being particularly difficult or lengthy, though in common with other 3D games with a fixed camera angle, manipulating objects precisely in 3D space can be frustrating at times. To be honest, I found searching for the nine paintings hidden in each level to be harder than most of the puzzles; I had to repeat every level at least once to discover all of the canvasses.
On the negative side, the overarching message and story is a bit of a mess, with the Hero and Aiko initially trying to discover and remedy what has gone wrong with world created by the Artist, before everything turns dark ([spoiler]with the Artist sadistically abducting Aiko and forcing the Hero to further harm the world in his attempt to reach and free his wife; but bizarrely the blame seems to eventually fall on the victims rather than on the perpetrator[/spoiler]). There were a few glitches where the Hero got stuck but these were easily overcome by backtracking slightly; more seriously, twice in the Void level the Hero materialised but without the platform that he should have been standing on, so he could not move - I had to restart the whole level in both cases. But the biggest disappointment in my view was having an achievement for repeating the whole game - I assumed that it would lead to a different ending but no, it was just a purposeless and pointless repeat of every puzzle and of the original ending.
Overall, then, a very visually attractive game with some interesting puzzles, but let down by an odd narrative from the middle of the game onwards, by having lots of little self-contained puzzles rather than some linked and/or more complex ones, and by requiring a complete re-run with no new aims or outcomes to obtain the final achievement. Nonetheless I will (lukewarmly) recommend the game to reward the lovely hand-drawn artwork, but only if bought at a discount.
