Let's start saying that the game is pretty broken. The real space race had 5 missions that ended in loss of life and here you can have the highest possible reliability and still you get a catastrophic failure in one out of 3 missions, no matter the Tiger teams, or whatever.

Apart from that, the game is entertaining. Honestly I liked BARIS way more than this, as it was more historically accurate, but let's face it, BARIS is abandonware and even the open source version available in Github looks ridiculously tiny with the high resolutions we use today. Still, if BARIS was a 10, SPM is still a 6 or a 7.