I had to redo the first stage a few times, but after a few tries I was lucky to make it to the next ones, which are all significantly easier. I am glad I did, because the ending line was pretty funny :) The luck element makes the game feel unfair and it's a shame that people may not get to the other parts of the game. Maybe you could create the feeling of floating aimlessly in away that players feel more in control? For example the cell could jump streams (with different speed) to get ahead? Or line up the food to the cell trajectory and make it about reflexes.