Very original, unique idea! I love it, I definitely want to see a polished version of this!
I couldn't get past the grey gap level >.<
But from what I had played it was really good, although I do agree with what @B-Deshi Dev said, that the mouse controls are a little hard, perhaps you should find another way of getting this game to work with different controls?
Great job at making this game in 48 hours! Give yourself a high-five!
(-Amy)