Very frustrating but well done! Could not get past about the 3rd platform for the longest time. Interesting concept but I don't think I have the dexterity to play it for very long.
It was a challenge but fun. I know it is possible; I just couldn't get the controls for it, but that's fine. The floaty-ness of the spinning cube was an interesting mechanic as I could sometimes get it to fly, but just could not control it enough to not fall if I did reach the platform.