This game is, in a word, frustrating.
This is a game that can't quite decide what it wants to be. On one hand, its an exploratory world with puzzles and secrets to uncover. On the other hand, it's an RPG with fetch quests, trials, obstacles and things trying to kill you. These two halves do not mesh as well as they should and the mechanics that would be forgivable in a pure exploration game do not hold up for a battle-less RPG.
Boiled down to it's core, the game play is find the glowing bits, collect them all, feed them to a machine and then activate the machine which either gives you a different glowy bit to bring back the big machine in the middle, or helps you open a door to go through to continue the cycle. This on it's own, isn't bad. Standard RPG/puzzle quest. But the controls do not have the proper fine tune to allow the player to actually accomplish these goals easily. After activating one machine by a door, it dropped down a battering ram that it took me a good 15 minutes to get to actually hit the door in a way that actually broke it down.
Another section involved a maze of thorns that you had to fly against the wind to navigate. Flap wrong and you're thrown into the waiting thorns much like a ping pong ball and it's near impossible to recover without being thrown into another bed of thorns. In another, after successfully activating a machine, I was presented with another challenge, having to get a glowing bit from a running stag. Due to the limitations of the controls and the flaky flapping mechanic, I eventually just gave up as I was never able to get my character to do anything that got it even close to the runner.
The visuals of the game are pretty impressive. Stylized, but not in a way that comes off as pretentious. If it weren't for the aggressive birds, excessive thorns and fighting against the controls to try and get from place to place, it would be a very nice, laid back exploratory game, which the ambient sounds and lack of any narrative present it as. But at it's heart, this game more comes off as a frustrating, non linear puzzle platformer who's mechanics just can't hold up to what the player needs to do. Perhaps with a game pad or under windows, it would work better, but I have neither of those things to test it with, and the graphics and atmosphere alone are not enough to make up for the high level of frustration this brings.