How do I activate my Kerbal Space Program Steam key?

1. Open the Steam client. 2. Click "Add a Game" in the bottom left corner. 3. Select "Activate a Product on Steam" from the dropdown. 4. Enter the code and follow any on-screen instructions.

How fast will I receive my key?

Your key is delivered instantly after purchase. Once payment is processed, the key will appear in your account dashboard, ready to reveal, copy, and activate through Steam.

Is it safe to buy game keys on GameBoost?

Yes. GameBoost is a verified marketplace rated Excellent on Trustpilot with over 18,000 reviews. Every purchase includes instant delivery, 3% cashback in GB Coins, and 24/7 live chat support.

What is your refund policy?

You are eligible for a refund if the key has not been revealed and a valid refund reason is provided and approved by GameBoost, if the delivered key is not as described (wrong edition, wrong platform, or cannot be activated in your country despite being listed as compatible), or if the key is invalid or duplicated. You are not eligible for a refund if the key has been revealed and redeemed successfully, if the key works correctly and matches the product description, or if you do not like the game or changed your mind. Contact GameBoost's 24/7 live chat support for any refund requests.

Is this a Steam key or an account?

This is a Steam key, not an account. You activate it on your own existing Steam account and retain full ownership of the game permanently.

Does this key include the expansions?

No. The standard purchase includes the base game only. The Making History and Breaking Ground expansions are sold separately or as part of bundles that combine the base game with both expansions.

Is Kerbal Space Program difficult to learn?

The game has a genuine learning curve since it relies on real orbital mechanics rather than simplified arcade physics. Career Mode and Science Mode ease players into the fundamentals gradually, and a large community of guides, tutorials, and wiki resources exists to help newcomers understand the basics of orbital flight.

Does the game support mods?

Yes. Kerbal Space Program has extensive mod support through the Steam Workshop and third-party mod managers, with community-made content ranging from new parts and improved visuals to entirely new planetary systems and multiplayer functionality.

Buy Cheap Kerbal Space Program Steam Key

Q: What regions does this key work in?

This key is available in multiple regions. Select your region at checkout to confirm availability for your country. If you are unsure whether your country is supported, check the activation details on the product page before completing your purchase.

Kerbal Space Program Editions (2)

Standard Edition

Price

$5.90

Complete Edition

Price

$15.31

Kerbal Space Program DLC & Add-Ons (2)

Kerbal Space Program Breaking Ground

Kerbal Space Program: Breaking Ground Expansion is the second expansion for the PC version of the critically acclaimed space flight simulator, Kerbal Space Program. This feature-rich expansion is focused on increasing the objective possibilities once celestial bodies have been reached by adding more interesting scientific endeavors and...

$5.07

Kerbal Space Program Kerbal Space Program: Making History

Expand your Kerbal experience like never before with Kerbal Space Program: Making History Expansion. The first expansion pack for the critically acclaimed space simulation game adds new content to Kerbal Space Program, including an immersive Mission Builder, a History Pack featuring missions inspired by historical events, and a wealth of...

$3.36

Trailer, Artwork & Screenshots (6)

Artwork

Screenshot

+1

Description

In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics. Launch your Kerbal crew into orbit and beyond (while keeping them alive) to explore moons and planets in the Kerbol solar system, constructing bases and space stations to expand the reach of your expedition.

Kerbal Space Program features three gameplay modes. In Science Mode, perform space experiments to unlock new technology and advance the knowledge of Kerbalkind. In Career Mode, oversee every aspect of the space program, including construction, strategy, funding, upgrades, and more. In Sandbox, you are free to build any spacecraft you can think of, with all parts and technology in the game.

Key Features

Build spaceships, rockets, and vehicles using any imaginable combination of parts, each with their own function that will affect the way your spacecraft behaves.
Take full control over your ship’s setup to execute complex flight maneuvers.
Manage your Kerbal crewmembers, including hiring, training, and sending them into space to become heroes.
Discover a whole star system with unique moons and planets, exploring detailed terrain at a vast scale.
Send your Kerbal crew outside their ships for “extra-vehicular” activities.
Dock spacecraft together to construct space stations, massive starships, and surface bases on new planets.
Use satellites to scan terrain and find biomes and other anomalies.
Set up communications networks to communicate between your spacecraft and Kerbal Space Center.
Research and develop new technologies to extract valuable information and resources from all over the solar system, and much more!

Try out the many mods created by the Kerbal Space Program community!

Buy Kerbal Space Program Steam Key

Buy your Kerbal Space Program Steam key on GameBoost and get it delivered instantly to your account after purchase. Your key is ready the moment your order goes through, with nothing to wait for. Every purchase also earns 3% cashback in GB Coins, and GameBoost's 24/7 live chat support is there if you need anything. With over 18,000 Trustpilot reviews, GameBoost is a trusted place to find PC games at the best prices. From new releases to classic titles, GameBoost offers our full Steam game catalogue across the full range of PC gaming.

About Kerbal Space Program

Kerbal Space Program is a space flight simulation game developed by Squad and published by Private Division. The first public version was released digitally in June 2011, before joining Steam Early Access in March 2013 and coming out of beta on April 27, 2015. Take-Two Interactive acquired the game in May 2017, later publishing it under Private Division, its label for supporting mid-sized development studios.

Players take charge of a space program operated by Kerbals, small green humanoid aliens who have built a fully functional spaceport called the Kerbal Space Center on their home planet, Kerbin. The game's orbital physics engine is genuinely realistic, supporting real-world maneuvers like Hohmann transfer orbits and orbital rendezvous. Players assemble spacecraft from a library of parts, each affecting how a design performs, then launch and pilot it through Kerbin's atmosphere and beyond, with the ever-present possibility that a poorly designed rocket simply falls apart on the pad.

Three gameplay modes are available. Science Mode has players run experiments to unlock new technology. Career Mode adds the full administrative layer, covering construction, funding, strategy, and upgrades across the whole program. Sandbox strips all of that away, giving players immediate access to every part and piece of technology in the game to build whatever they can imagine. Kerbal astronauts, referred to as kerbonauts, can leave their spacecraft on extravehicular activities, collect science, plant flags, and repair damaged vessels while suited up.

Many parts in the game are directly inspired by real spacecraft hardware, including analogues of Sputnik 1, the Apollo command module, and the RS-25 engine. The game supports recreating actual historical missions, from Apollo moon landings to the Curiosity rover and the International Space Station, and its community has kept pace with real-world spaceflight news, including recreations of NASA's Artemis II mission. Two expansions were released for the base game: Making History in March 2018 and Breaking Ground in May 2019, adding new mission-building tools, servos, pistons, and deployable science experiments.

Kerbal Space Program has one of the most active modding communities in PC gaming, with community-made additions covering everything from new parts to improved physics and multiplayer, some of which have been officially adopted into the base game over time. Kerbal Space Program holds a Metacritic score of 88 and an Overwhelmingly Positive rating on Steam.

Region & Activation

This game key is available in multiple regions. Select your region at checkout to see availability and pricing for your country. If you are unsure whether your country is supported, check the activation details on the product page before purchasing.