Kerbal Space Program(KSP) allows you to create and manage your own space program.
Currently under development by indie developer, Squad. KSP is currently in Alpha, and free to download and play. And I cannot recommend it enough. It’s addictive, original and easy to play mechanics kept me coming back to it over and over again. In fact I’m confident KSP will be as popular as Minecraft someday.
It’s an ace game and is currently only a shadow of what the developers have in store for us. Enjoy the video showcase below and head over to their official site to pick it up for free. It’s great.