I too got a bit stuck. I figured out the mouse wheel movements (I think) and I moved the circles around but . . . I made it no further than Coconut Mousse. Is there more to the puzzle than shown in CM's video? Is there an obvious ending?
That said, thanks for pointing out The Mushroom at the End of the World! A copy is winding it's way to me via the Brooklyn Public Library and Ms. Tsing's work in general looks very interesting.