Oh! Well I definitley had thought the distances were timers but after I collected water a couple times I came across the Big Water! Then I understood that they were distances :)
One thing that I really liked was that I felt constantly interested while playing because, as I went up, I found more and more different things! So something about that definitley caught my attention, combined with the distance display It was not only interesting to play but It gave me a purpose and a goal, to get to the end. All in all, I'd say it has very fundamentally FUN aspects that I really enjoyed! <3