I watched a video for it and my eyes couldn't handle the white flashes from those spherical pick ups (?). I don't really get queasy or motion sick from games, but it was starting to hurt my eyes for sure.
Took me a while to figure out the controls. Also, I was surprised that it was running in Unity... I guess the lack of textures or anything prevents it from getting the "Unity look" (not that there's anything wrong with the "Unity look" of course... I kind of like it)
Add a somewhat special soundtrack, which makes half the experience especially for this kind of games, make it Universal (iPad HD e retina support) with Gamecenter for leaderboards and I'm on board with my wallet open.