Kerbal Space Program has left Early Access. 1.0 comes packed with new features, optimizations, bugfixing, and tons more! Conquering Space Was Never This Easy!
User reviews: Overwhelmingly Positive (24,001 reviews)
Release Date: Apr 27, 2015

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Recommended By Curators

"A perfect blend of science and slapstick, and a robust and compelling sandbox of possibility. Simply outstanding."
Read the full review here.

Recent updates View all (23)

August 22

First news on version 1.1

Hello everyone!

While the news has been slow on our side for the past few weeks we’ve been discussing update 1.1 and we have some exciting news to share. Now that the Unity 5 update is nearly complete we put it through internal testing and found that we had made enough major changes that we wanted to share these with you a bit more quickly than we originally intended, so we’ve moved the 1.1 update forward.

This means that the scope of the update will be reduced slightly in favor of speeding up the release schedule. The Unity 5 update in itself brings major changes to many game systems, and delivers a very solid performance boost, via the new version of PhysX being able to multithread across your processor cores. Perhaps more importantly the Unity 5 update has proven to make the game far more stable on 64 bit platforms, meaning a 64 bit client for Windows and possibly Mac OSX is something we’re looking into very seriously for this update. Also part of the engine update are the overhauls of the UI, wheels and various other systems that you’ve been reading about in the dev notes.

Helping us accomplish this is modder extraordinaire NathanKell, who is new on the team and will be working closely with the existing developers to polish existing systems and implement new ones:



Aside from a new developer, performance increases, reworked systems and new platform support we’ll be adding new content to the game as well. Porkjet, RoverDude, Arsonide and NathanKell have been working on a number of features.

Highlights include:

  • New Parts
    The Mk1 cockpit has been reworked, not redesigned from the ground up, keeping the original style that we all enjoy and incorporating in real-life counterpart cockpit designs. The Mk1 parts that received an overhaul a while back are also being slightly reworked to bring them closer in style to the rest of the beautiful spaceplane parts that Porkjet has modeled.

    It doesn’t stop there with the spaceplane parts though, Porkjet has also been working on 0.625m jets and associated parts, as well as spicing up the Basic Jet Engine and Turbo Jet Engine. You’ll all be seeing more of that at a later date, as well as a few parts that are currently still being designed and developed.

    Porkjet made an album with his work so far. Click this link!

  • Antenna Diversity and Probes
    A feature we’re sure you’re all familiar with by now, if not you should read this article. RoverDude is still hard at work further refining this feature and incorporating the feedback we received from you, the community. Onwards to QA from there!

  • Contextual Contracts
    Having Contracts that set full missions for you is great fun, but the real sense of achievement comes from watching something take shape and evolve over time. With Contextual Contracts, we’re hoping to provide the contracts KSP give you with a level of continuation from where you currently are in your space program. Therefore, instead of receiving endless contracts to build a base, you receive an initial contract and then additional ones to add a lab, for instance, or adjust a satellite to meet new requirements. We’re talking adding depth, not breadth to the contracts system, something we’re hoping improves the gameplay dynamic and furthers the potential that Career Mode allows players to have.

  • Localisation
    Lastly, we’re planning on adding the framework for localisation into the next update, paving the way for implementing localised versions of KSP. But more on that later!

Of course, a major engine update and these new features all require extensive QA testing. To bring this all together we will be focussing two or three weeks in QA purely on the engine update, after which the new features will also undergo testing and we’ll have a final part of testing focus on bugs in general to make sure we catch as many bugs as possible, both new and existing ones. All in all it will take us a while to finalize testing still, but we’re very happy to move forward and spend this time to provide a more stable and fluid experience for everyone.

Keep an eye on our usual development news channels (Devnote Tuesdays and Squadcasts) in the near future. We’ll be keeping you up to date on any developments we can share!

66 comments Read more

July 7

Valentina Kerman figurine now available on Shapeways!



We are happy to announce that Valentina Kerman is now available at our Shapeways Store!

We’ve been working to bring Valentina to Shapeways for a long time and it’s great to see her complement the current figurines at long last. If you wish to read more about how such a process works you can find an article on our forums by lead artist DanRosas.

Visit our Shapeways store now!
and find the perfect companion for your desktop!

66 comments Read more

About This Game

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 Space 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 ship’s setup 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.
  • Extract valuable resources from all over the solar system.
  • And a whole lot more!

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • OS:Windows Vista
    • Processor:Core 2 Duo
    • Memory:3 GB RAM
    • Graphics:SM3 512MB VRAM
    • Hard Drive:1 GB HD space
    Recommended:
    • OS:Windows 7 or 8 64 bit
    • Processor:Core i5
    • Memory:4 GB RAM
    • Graphics:SM4 1GB VRAM
    • Hard Drive:2 GB HD space
    Minimum:
    • OS:Snow Leopard (10.6)
    • Processor:Intel
    • Memory:3 GB RAM
    • Graphics:SM3 512MB VRAM
    • Hard Drive:1 GB HD space
    Recommended:
    • OS:Yosemite (10.10)
    • Processor:Intel Core i5
    • Memory:4 GB RAM
    • Graphics:SM4 1GB VRAM
    • Hard Drive:2 GB HD space
    Minimum:
    • OS: Linux (Most distros should work)
    • Processor: Core 2 Duo
    • Memory: 3 GB RAM
    • Hard Disk Space: 1.5 GB HD space
    • Video Card: SM3 512MB VRAM
    Recommended:
    • OS:Ubuntu 14.04
    • Processor:Core i5
    • Memory:4 GB RAM
    • Graphics:SM4 1GB VRAM
    • Hard Drive:2 GB HD space
Helpful customer reviews
1,367 of 1,428 people (96%) found this review helpful
20 people found this review funny
78.2 hrs on record
Posted: April 27
This game should be standard issue in school physic classes. Taught me more about orbital mechanics than anything else.
Was this review helpful? Yes No Funny
580 of 590 people (98%) found this review helpful
11 people found this review funny
1,308.3 hrs on record
Posted: June 11
Words alone cannot express how amazing KSP is.

To be honest, this is not a game for everyone. If you are in the market for some fast-paced "space combat sim" with all kinds of weapons and big explosions, then this isn't what you are looking for. (Except for the big explisions... KSP has you covered there).

However, if you ever dreamed of actually being an astronaut, this is definitely for you. If you sometimes forget to breath when watching recordings of the Apollo moon landings, this is definitely for you. If precise, measured flying; careful planning; and delta-v budgeting are what drives you, this is definitely for you. If you want to learn about Orbital Mechanics and are dying to know what the Oberth Effect or a Hofman Transfer Orbit are, this is definitely for you. If you like Physics, this is definitely for you.

Optionally, if you just like building rediculously large rockets and watching them explode with glorious comedy when they fail catastrophically because you forgot ONE PART... then this is also definitely for you.

Kerbal Space Program is challenging, fun, frustrating, mind boggling, huge, hilarious, complicated, deep, and just plain awesome.
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897 of 953 people (94%) found this review helpful
78 people found this review funny
56.7 hrs on record
Posted: April 28
Parachutes do not work on the moon. Many Kerbals died to bring us this information.

11/10
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1,184 of 1,321 people (90%) found this review helpful
14 people found this review funny
823.5 hrs on record
Posted: April 27
10/10

Ruined Science Fiction Movies with now learnt knowledge of real-life Astrophysics
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274 of 279 people (98%) found this review helpful
1 person found this review funny
851.0 hrs on record
Posted: April 28
There are no other games really like this. You will, in a terribly entertaining way, learn some fundamental of orbital mechanics, rocket science, aerodynamics, astrophysics and even a bit of mechanical engineering and straight physics.

There is nobody to shoot, no zombies, no monsters, no combat. No grand conquests and raising flags over captured enemy bases. Yet you have never and will never play a game that will challenge, entertain and reward you like KSP will. The learning curve is stiff but not terrible. You play it at your own pace because, well, there is no other pace you can play it at. Games like Dark Souls are 'hard' because you've got to have the right mix of luck and muscle memory and you have to throw yourself at it again again. KSP can be hard because calculating the right setup for the right injection burn to put you in a viable position to get past Ike into a stable orbit around Duna with enough fuel to get you home is a staggering undertaking, a lot of planning and forethough.

This is one of those games that changes gaming. You will kick yourself, repeatedly, when you look back and realize you didn't have a chance to play KSP.

It is a complex, indepth, engaging, well balanced and changing but simplified to make it fun to play simulator for building and deploying rockets and ships to go into space, visit and explore other worlds and travel a solar system.

The developer is a big part of this success. One of the first trail blazers on 'early access' they have been amazing for involving the community. Several of the top modders for KSP (they love and support modding in KSP - not to fix bugs but add content) were engaged and used in building content for the 1.0 release even. They are still engaged in improving and adding content to KSP.

I've got close to 800 hours in at this point and still haven't really played swaths of the game, there are dozens of mods I want to try but haven't had the chance. This is the kind of game that's fun and engaging for years and years. Sometimes you need to step outside the regular run of the mill and see why a game like this has tens of thousands of reviews that are almost universally positive.
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