I saw the gameplay at youtube and even if it is a small girl in a dream world it is just a basic platformer. No puzzles to solve, no gravity change and no time switches.
All you have to do is to walk from left to right and try to find the post box which. I like the mood and style of this game, also the level change sequences are well done and don't draw your attention from the story.

But I don't think our concept is close enough to be considered as a Lucidity clone.