I would like to start by saying what a shame! The content of this game is astounding but, having played it for some time, I have discovered it is unplayable and eventually leads to frustration and disappointment.
Initially, learning the game took some time. If you are unwilling to invest in the tutorials, you can leap right in but you will have some difficulties with the controls in the beginning.
Game play, there is minimal violence. Occasionally your rocket may explode but there is no blood splatter or the that sort.
My problem came when I was well into the game. It started pausing (stuttering). It was minor at first but progressively worsened over time. I Googled this problem and discovered this was a common unresolved problem with this program. For me, the straw that broke the camel's back was when I was in mid flight and the program paused. As much as this has been going on, it was unacceptable at such a stage of game play. I escaped out and immediately deleted the program.
Again, this is a known, unresolved issue by the game developers so if you want frustration after hours of game play, by all mean, purchase this program and play it.