Kerbal Space Program

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Third party DRM: Steam

This game requires a free Steam account to play.


"Armageddon It: NASA Kerbal Mission Blasts Off" -

In KSP you must build a space-worthy craft, capable of flying its 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 offers three gameplay modes: Sandbox, in which you are free to build anything you can think of; Science Mode, which lets you perform Scientific experiments to advance the knowledge of Kerbalkind and further the available technology; and Career Mode, in which you must manage every aspect of your Space Program, including administration strategies, Crew Management, Reputation, as well as taking up Contracts to earn Funds and upgrade your Space Center Facilities (or repair them).

Add to this the ability to capture asteroids (a feature done in collaboration with NASA), Mining for resources out across the furthest reaches of the Solar System, Constructing Bases and Space Stations in and around other worlds; plus literally thousands of mods from a huge active modding community, all add up into the award-winning game that has taken the space sim genre by storm.

Key Features:

  • The Vehicle Assembly Building and the Space Plane Hangar allows players to build spacecraft out of any imaginable combination of parts.

  • Fully-fledged, Physics-based Flight Simulation ensures everything will fly (and crash) as it should.

  • Take your Kerbal crew out of the ship and do Extra Vehicular Activities

  • Fly out to Moons and other Planets

  • Procedural Terrain delivers detailed terrain at a vast scale. The Kerbal Planet is 600km in radius!

  • Mod-enabled, allows players to create new content and modify the game.

  • Ship systems. Keep an eye out for engine temperatures and fuel levels, and try not to explode.

  • Build ships with multiple stages, and jettison parts away as they burn out.

  • Full control over the staging sequence allows for complex ships and advanced functionality.

  • Dock spacecraft together to build Space Stations, Massive Starships, or even surface bases on other worlds.

  • Manage your crewmembers, hire them, and send them out into space and make them into heroes.

  • Research and Develop new technologies to advance your Space Program.

  • Take on Missions to attract interest in your Space Program.

  • Discover new worlds and expand the scientific knowledge of Kerbalkind.

  • And a whole lot more!

Customer reviews


Simple things and hard things.

wolfydude12 | Dec. 12, 2015 | See all wolfydude12's reviews »

Kerbal space program has a level for everyone. Learning how to get things into space, circularize your orbit, and even go to both of the moons of the main planet are fairly complex, but after a few videos and several hundred attempts, you'll eventually get there. Dive deeper and you can get to one of the other planet, probably with probes at first, but eventually land a Kerbal there, and even have your own base! But the more you want to do, the harder everything gets! Get bored with the vanilla game? There are hundreds of mods that you can get and easily set up! KSP is a game I constantly come back to and Squad is still working hard to make it a game for everyone.


The Space game you always wanted

Damaged7 | Nov. 8, 2015 | See all Damaged7's reviews »

Kerbal is a well done space game that will satisfy everyones craving to build rockets and take them to space. The physics system is very well done and allows for users to create their own crafts and launch into space, land on planets, explore moons...there is no limit. There is a career mode as well as sandbox. Career can be very rewarding working with limited parts and achieving a mun landing. This game is very fun as well as a little bid educational. The community has lots of great mods and part add ons. If you are on the fence about Kerbal then take the plunge, its well worth it.


In One Word: Masterful

MysticMatt | Sept. 2, 2015 | See all MysticMatt's reviews »

Masterful: It refers to many aspects of this game. You yourself must be masterful in order to have any sort of success. The game has a unique art style that they masterfully pull off. The concept was a difficult one but again was masterfully done. The gameplay, mechanics, and so many other things are all just so masterfully done. The only thing holding this game back from a 92 is my personal ineptitude at the game. I found that it was very tough to get into. The tutorials are alright but it doesn't seem to be the most useful thing. If you research help on the game so many things seem to make assumptions as to what you know (I wanted to get to Mun and I was seeing mention of Delta V and drag force and many things) so you really need to do a lot of research if you want to get started. The interface can be slightly confusing until you learn it. What I am trying to say is that this game is tough for beginners but once you pass that threshold you are on your way into a game that is so masterfully done that you will be addicted.


Best Space Conquest Simulator

FixyNeko | July 31, 2015 | See all FixyNeko's reviews »

Once upon a time, on Kerbin, a Kerbal looked into the sky and said: "Is Minmus made of jelly?". So began the Kerbal Space Program. The main purpose of this game is sending a lot of stuff in space, like probes, manned vessels or a flying trash: the only limit are your imagination and your computer can calculate (a thousand pieces rocket may lag). Physics is pretty realistic, even if some parts like antennas are physicsless, and orbit simulations are awesome. Rockets are little op, you won't have to take care of as much as NASA, so every player, with 1 or 2 hours of practice will be able to dock and make his first space station. There are a lot of tutorials, covering every aspect of the game. Building a ship, orbiting, landing, rendez-vous with another ship (or an asteroid) won't have any secrets for you. But the UI is a little messy, you can watch Scott Manley's youtube channel, he has a lot of KSP videos, and give a lot of tipps.


Hard to pick up, but so fun

The1337N00Bx | July 21, 2015 | See all The1337N00Bx's reviews »

I spent a lot of hours in this game, and i still don't fully understand it. Regardless, I have a lot of fun in it making stupid creations, most of which don't make it very far off the ground. It's a very interesting idea for a game though and the creations I've seen other people make are insane. If designing space ships sounds fun to you, look no further than this game.