Kerbal Space Program is a space flight simulation video game developed and published by Squad for Microsoft Windows, OS X, Linux, PlayStation 4, and Xbox One. In the game, players direct a nascent space program, staffed and crewed by green humanoid aliens known as "Kerbals". The game features a realistic orbital physics engine, allowing for various real-life orbital maneuvers such as Hohmann transfer orbits and bi-elliptic transfer orbits. The first public version was released digitally on Squad's Kerbal Space Program storefront on 24 June 2011, and joined Steam's early access program on 20 March 2013. The game was released out of beta on 27 April 2015. Kerbal Space Program has support for user-created mods that add new features, and popular ones, such as those for resource mining and context-based missions, have received support and inclusion in the game by Squad. Notable people and agencies in the space industry have taken an interest in the game, including NASA and SpaceX's Elon Musk.In May 2017, Squad announced that the game was purchased by publisher Take-Two Interactive, who will help support Squad in keeping the console versions up-to-date alongside the personal computer versions. An Enhanced Edition was released on the Xbox One and PlayStation 4 in January 2018 by Private Division, a publishing subsidiary of Take-Two Interactive. A DLC pack called Making History was released on 8 March 2018. The expansion contains many parts inspired by those used in various rockets such as the Soyuz spacecraft and the Saturn V. == Gameplay == The player administers a space program operated by Kerbals, a race of small green humanoids, who have constructed a fully furnished and functional spaceport called the Kerbal Space Center on their planet Kerbin. Despite being shown as cartoonish beings sometimes lacking common sense, Kerbals have shown themselves capable of constructing complex spacecraft parts and performing experiments to realize their scientific goals. Players can create rockets, aircraft, spaceplanes, rovers, and other craft from a provided set of components. Once built, the craft can be launched by players from the KSC launch pad or runway, or other launch pads and runways around Kerbin, in an attempt to complete player-set or game-directed missions while avoiding partial or catastrophic failure . Players control their spacecraft in three dimensions with little assistance other than a stability system to keep their rocket oriented. Provided it mainta
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