If anyone looks for a game (atm soloplayer - alpha) where u can engineer your own space rocket/aircraft/space station or travel to another planet or just to the moon, buy it and try it out.

It is Alpha - but works better than the most finished games.

It is really difficult and u need your brain to learn how to construct a rocket to leave the atmosphaere - to learn how to navigate in orbit or how to traject out of the orbit.

Really realistic, really difficult, now i understand apollo 13 more :p