Kerbal Space Program 1. I bought it in early beta for like $14, have received all subsequent updates for free because I bought it so early, sunk literally thousands of hours of enjoyment into it and come out with a solid basic understanding of orbital mechanics.
I cant think of a better return on investment I've ever made.
Especially since you are the fucking commander of the space station.
Kerbal Space Program 1. I bought it in early beta for like $14, have received all subsequent updates for free because I bought it so early, sunk literally thousands of hours of enjoyment into it and come out with a solid basic understanding of orbital mechanics.
I cant think of a better return on investment I've ever made.
Especially since you are the fucking commander of the space station.