Can I purchase Kerbal Space Program directly on the KSP Store? Jenn L. October 22, 2019 18:19 Updated Follow You can purchase Kerbal Space Program directly from the website by clicking here. If you have any other questions, you can always submit a support ticket. Related articles If I buy the game now, will I have to buy it again for the next update? I saw the post stating that players who purchased the game before May 2013 will get expansions for Free. Does this apply to Steam purchases as well? I bought the game on the KSP Store, but I want it on Steam. Will you give me a Steam Key? Comments 0 comments Article is closed for comments.