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Kerbal Space Program is a multi-genre game where players create their own space program.

In KSP, you must build space-worthy craft, capable of flying your crew out into space, without killing them. At your disposal is a collection of parts, which must be assembled to create a functional ship. Each part has its own function and will affect the way a ship flies (or doesn't). So strap yourself in, and get ready to try some Rocket Science!

The game is being built first as an open sandbox. There are no objectives yet. You're free to build anything you can think of, and fly it wherever you want, even into orbit

What's New

Version 0.22.0:

Note: 4.1.2f1 is the version number reported in Finder; it is a reflection of the app's Unity runtime version. The developer refers to the latest commercial version of the app as 0.22.0, while the current demo version available via the 'Download Now' link above is at 0.18.3.
  • Now includes SCIENCE! (Oh, and a bunch of other updates too.)


OS X 10.6 or later

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Kerbal Space Program User Discussion

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4.2 5


Current Version (0.x)


Downloads 11,965
Version Downloads 4,065
License Demo
Date 19 Oct 2013
Platform OS X / Intel 32
Price $23.00
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