Started wondering how long I'll play, ended up playing for a while and no idea how long I spent on this single rocket. Was addicting, and I kept saying "just one more flight" until I was up at 9,000m mark. I was slightly annoyed that the piece goes back somewhere on left or right when left-clicking them, rather than letting me move it around again from the same place. 9246 was as far as I was able to reach, hope I might hit 10,000m sometimes later. Great Game!