You have one character, this character gain ability while passing level, for example jumping, running, ... The level is always the same but shapeshift according to your character's ability.
I like this kind of puzzle in 3D that you can resolve with a different combination of action ! But the shapeshift of the level is hard to see, just by adding an overview of the level at the beginning combined to an animation from the last configuration to the new one (translation to create the distances between the plateform, some rotations...) can make your game easier to understand. But it's still a good idea and nice game :)
I like the way it is the same level but the platforms shift between iterations. I would have liked the controls to be a bit more snappy. Jump a bit higher while having higher gravity, stop faster when letting go and so on. Kept falling off and it felt like it wasn't my fault but the games fault (which made me stop on the second level). Good idea for a game though.
Good job on the music though!