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:
Recent:
Very Positive (434 reviews) - 94% of the 434 user reviews in the last 30 days are positive.
Overall:
Overwhelmingly Positive (31,198 reviews) - 97% of the 31,198 user reviews for this game are positive.
Release Date: Apr 27, 2015

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Recent updates View all (34)

September 13

Update 1.2 Pre-release is here!

Hello dear Kerbonauts!

Update 1.2 has finished its Experimentals phase and we’re excited to announce the launch of the Public Pre-release.

During Experimental testing a small team of experienced KSP players threw everything they’ve got at the game in order to help us catch as many bugs as possible, so that we could make the game as stable as it could be. Now we’re proud to say that’ve come to the point where we can finally release the open test build.

This ‘pre-release’ test build is for everyone to have a go before we officially released the update and you’ll be able to opt-in to get the Pre-release builds via the Steam betas, or, for the first time ever, through the KSP Store. Naturally, you’ll need own a copy the game beforehand in order to access these builds. This opt-in branch will run for a minimum of two full weeks before the release date of the final update (the final release date hasn’t been closed, so changes may occur).

To facilitate discussions of the Pre-release branch we’ll be opening up a temporary sub-forum for feedback. Additionally, a Pre-release project will be made available on the bug tracker to report bugs on.

Furthermore, we want to help the modding community by making the modding API public. Click this link and enjoy!

Finally, and as promised, you can get Porkjet’s awesome rocket parts package files here .

We’re almost there and we couldn’t be more excited. Stay tuned for updates and happy launchings!

213 comments Read more

September 5

Update 1.2 has entered Experimental testing!

Hello Kerbonauts!

Update 1.2 has just entered Experimentals! We’re eager to finally start the next phase of testing and getting ever closer to the 1.2 release.

During experimental testing a crack team of experienced and hand-picked KSP players will throw everything they’ve got at the game to make it bend, blend and break in many ways. The goal is to catch as many bugs as we can, and to make the game as stable as it can be before we make a public test build available.

Those of you who’ve been around for the 1.1 update will remember that we released a ‘pre-release’ test build for everyone to have a go before we officially released the update, and for update 1.2 we plan to do the same thing. Once the pre-release builds are available you’ll only be able to opt-in via the Steam betas, or through the KSP store.

We hope you’re as excited as we are about the coming weeks. Stay tuned for updates and Fly Safe!

207 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 or 7
    • Processor:Core 2 Duo
    • Memory:3GB RAM
    • Graphics:SM3 512MB VRAM
    • Hard Drive:4 GB HD space
    Recommended:
    • OS:Windows 8 or 10 64 bit
    • Processor:Core i5
    • Memory:4 GB RAM
    • Graphics:SM4 1GB VRAM
    • Hard Drive:6 GB HD space
    Minimum:
    • OS:Mountain Lion (10.8)
    • Processor:Intel
    • Memory:3 GB RAM
    • Graphics:SM3 512MB VRAM
    • Hard Drive:4 GB HD space
    Recommended:
    • OS:El Capitan (10.13)
    • Processor:Intel Core i5
    • Memory:4 GB RAM
    • Graphics:SM4 1GB VRAM
    • Hard Drive:6 GB HD space
    Minimum:
    • OS: Linux (Most distros should work)
    • Processor: Core 2 Duo
    • Memory: 3 GB RAM
    • Hard Disk Space: 4 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:6 GB HD space
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Recent:
Very Positive (434 reviews)
Overall:
Overwhelmingly Positive (31,198 reviews)
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24,893 reviews match the filters above ( Overwhelmingly Positive)
Most Helpful Reviews  In the past 30 days
76 of 83 people (92%) found this review helpful
67 people found this review funny
Recommended
43.5 hrs on record
Posted: September 4
A wise man once said:

"If at first you don't succeed, add more mainsail thrusters."

This man was correct.
This man was me.
Was this review helpful? Yes No Funny
54 of 58 people (93%) found this review helpful
43 people found this review funny
Recommended
296.5 hrs on record
Posted: September 1
Top 5 things that taught me orbital mechanics:

5. Apollo 13 (1995, Tom Hanks, Bill Paxton, Kevin Bacon) ~$13 [Amazon.com]

4. Highschool Physics (Newtonian Mechanics) ~Free [Australian Education System]

3. Undergraduate Physics Degree (Keplerian Motion, One body mechanics) ~$8000 /year [UQ]

2. Postgraduate Physics Degree (Analytic two-body solutions, computational Runge-Kutta simulations) ~$10000 [UQ]

1. Kerbal Space Program ~$30
Was this review helpful? Yes No Funny
76 of 92 people (83%) found this review helpful
45 people found this review funny
Recommended
478.5 hrs on record
Posted: August 29
Better than No man's Sky - Derp
Better than Space engineers - Hardest call to make
Better than Starbound - Yeah I said it.
Better than Stellaris - was 50/50 but hey, kerbals rule.
Better than Factorio - you get to fly the damn rocket!

Would crash into the Mun for another 470+ hours.
10/10
Was this review helpful? Yes No Funny
27 of 28 people (96%) found this review helpful
15 people found this review funny
Recommended
297.7 hrs on record
Posted: September 13
Nothing will prepare you for the moment you first touch down on the Mun with your Kerbals - alive. The sense of accomplishment is magnificent.
Its probably comparable to the crushing defeat you feel as you realize you forgot to make sure you had enough fuel to get back home.
But! You've done it! You managed to get your Kerbals to the Mun, land them safely, lift off and get into an aerobrake orbit around Kerbin!
Aaaand, you forgot to put parachutes on your command pod :|
Was this review helpful? Yes No Funny
36 of 43 people (84%) found this review helpful
27 people found this review funny
Recommended
6.3 hrs on record
Posted: September 5
Launched rocket; watched it explode.
Made adjustments and launched rocket; watched it explode.
Made more adjustments and launched rocket; landed it successfully. Watched science explode.

10/10 Michael Bays.

You should definitely buy this game if you like physics and explosions.
Was this review helpful? Yes No Funny
56 of 78 people (72%) found this review helpful
71 people found this review funny
14 of 17 people (82%) found this review helpful
11 people found this review funny
Recommended
120.3 hrs on record
Posted: August 29
I spent 120 Hours on this game so far, and all i could achieve was crashing on the "Mun" and killing my Crew.
10/10
Was this review helpful? Yes No Funny
7 of 7 people (100%) found this review helpful
8 people found this review funny
Recommended
261.2 hrs on record
Posted: September 16
Harder than dark souls.
Was this review helpful? Yes No Funny
4 of 4 people (100%) found this review helpful
Recommended
44.5 hrs on record
Posted: September 21
As goofy as the game seems, you will NOT find a more in depth and accurate space flight simulation out there yet.

At first, it's fun to build explosive and cobbled together monstrosities to launch into space and send crashing back to the ground, but then you learn the basics. Then suddenly a successful Mun landing becomes a point of pride and the next planet over becomes your new goal.

The career mode starts you with simple parts, to be expanded through scientific discoveries and contractual financial incentives.

Jebediah recommends this game to anyone worth their salt in a tin can floating among the stars.
Was this review helpful? Yes No Funny
3 of 3 people (100%) found this review helpful
Recommended
14.0 hrs on record
Posted: September 18
And they say minecraft is educational. No, THIS is educational, orbital mechanics, maths and lots of fun.
Was this review helpful? Yes No Funny
Recently Posted
mrliamroliver
22.7 hrs
Posted: September 28
best game ever
Helpful? Yes No Funny
iloveteaalot
135.5 hrs
Posted: September 28
This game is just ♥♥♥♥♥♥♥ amazing, really worth the money!
Helpful? Yes No Funny
Xtyling
103.1 hrs
Posted: September 28
Kerbal space program is a awsome game though, I use BDarmory (recomended) KSP is awsome for your kids and you! NASA uses this game too! On the other hand BDarmory ads tonnes of weopons like the AIM 9 and ANTI RADAR missles
Helpful? Yes No Funny
Maverik343
645.0 hrs
Posted: September 27
In anyother game when you fail you just get a game over screen But in this game you failure is show by your craft blowing up and your crew dieing, followed by silence to make you think about what your'be done. But then you revert to launch and act like nothing happened.
Helpful? Yes No Funny
GrogMon
185.3 hrs
Posted: September 27
I launched one Kerbal into space.
Then two.
And then three.

But I realized it started taking too long.

Now I launch 20 Kerbals on one way trips for the glory of The Empire.

PS - Habitat modules can be jettisoned to account for fuel limitations...
Helpful? Yes No Funny
danny29087
43.6 hrs
Posted: September 27
great game, can be hard iif you dont know much, if you need tutorials, watch scott manley, his interstellar quest is a good one and his career mode tutorials are great too! Overall this is a great game and i love playing it, although modding can be difficult
Helpful? Yes No Funny
EternalReapers
81.9 hrs
Posted: September 27
Really fun game, hard to get into but when you understand it (or break it :P ) its so fun and rewarding !
Helpful? Yes No Funny
Thechicken
5.1 hrs
Posted: September 27
Fun game had it on ps4 but would crash up a storm. Now not one crash akes some time to get used to in the end worth every penny to me
Helpful? Yes No Funny
MINICURSOR212
2.1 hrs
Posted: September 27
How to waste your life....
Helpful? Yes No Funny
FreeKill
863.2 hrs
Posted: September 27
Too adictive, especially the realism overhaul mod.
Helpful? Yes No Funny