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 (535 reviews) - 94% of the 535 user reviews in the last 30 days are positive.
Overall:
Overwhelmingly Positive (30,472 reviews) - 97% of the 30,472 user reviews for this game are positive.
Release Date: Apr 27, 2015

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Recent updates View all (32)

June 21

Kerbal Space Program patch 1.1.3 is now available!



Hello everyone!

The 1.1.3 patch is now available! We’ve taken our time over the past couple of weeks to tackle as many issues as we could in this patch and the results speak for themselves: close to 100 fixes have been logged compared to the previous version of KSP, and we even found time to hide something small in the game that we’re sure a lot of long time fans will appreciate!

Check out the full changelog at our Forums.

148 comments Read more

April 30

Patch 1.1.2 is now available!



Hello everyone!

We noticed a number of issues persisted through the 1.1.1 patch earlier this week. We’re releasing patch 1.1.2 to address these issues before we head off to a long overdue vacation for the next couple of weeks. Patch 1.1.2 addresses issues with the user interface and landing legs, amongst others.

Check out the full changelog on our forums.

The Patch will start downloading through your Steam client automatically.

168 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:Lion (10.7)
    • 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! Learn more
Recent:
Very Positive (535 reviews)
Overall:
Overwhelmingly Positive (30,472 reviews)
Recently Posted
Dapper Illuminatist | trade.tf
( 144.1 hrs on record )
Posted: June 28
I have had the game since 0.9 and really liked it. There was some bugs. But ok. Now the dev quit on the game which is pretty sad because they promised many features in 1.1 but they didnt come out... Still recommended
Helpful? Yes No Funny
Carepackage456
( 1,129.9 hrs on record )
Posted: June 28
Love this game there is so much to do and so much play time worth in it
Helpful? Yes No Funny
[Booplesnoot] Ben Carson
( 1,135.2 hrs on record )
Posted: June 28
Steams says ive spent over 3 months in this game...

10/10

Would learn to be a wannabe-Physicist/Astronomer again
Helpful? Yes No Funny
glob
( 200.0 hrs on record )
Posted: June 28
An incredible game that really fueled my fascination for everything space and space travel. It has made me appreciate my own existance a lot more, and now every time I look up on the moon in the night sky I think to myself "Man, I reeally want to go there", and with KSP, I can.

It can be hard at first, but it is also incredibly satisfying when you achieve your goals. You even learn a whole lot while playing it!

It's also great fun to just fool around and build the craziest constructions and see how bad they fly and how terrible they crash. I really like the humorous undertones of the game.

One of my favorite games of all times, I'm deeply in love with it.



Helpful? Yes No Funny
Captain Potato
( 300.2 hrs on record )
Posted: June 28
Just amazing. This game can cater for those who like to fool around, right to the very top of the ladder with absolute expert Scott Manly's out there. Challenge yourself. Blow ♥♥♥♥ up. Build a space station. Build a tank. Finely tune a hyper-manuverable jet. Make a plane out of nothing but fuel and engines to burn it.
This game is so versatile, you could literally get anyone to play it.
Helpful? Yes No Funny
FishToast
( 6.4 hrs on record )
Posted: June 28
Great simulation game but better read this first if you have little to no background on how space travel works:
https://solarsystem.nasa.gov/basics/bsf3-4.php (courtesy of JPL)
Helpful? Yes No Funny
hadesrafsfg
( 444.6 hrs on record )
Posted: June 28
10/10 I just now figured out how to launch a plane
Helpful? Yes No Funny
mfhandy
( 123.3 hrs on record )
Posted: June 28
even most failures are fantastic
Helpful? Yes No Funny
kbforme
( 59.1 hrs on record )
Pre-Release Review
Posted: June 27
amazing and thank god they added the female kerbin so now young impressionable girls wont feel left out because there is a very large comunity of young women on steam interested in rocket simulation games. im going to reccomend this game but i really need more diversity in the future or i WILL be offended. for instance all of the kerbins are clearly cis why? the next update needs to have an openly gay kerbin and a trans kerbin, or do gay and trans kids not get to go into space? the fact that you think its ok to only represent two genders is disgusting and im VERY offended, this is 2016 you cavemen and obviously there are more genders now. if you like to play fun games and dont mind giving money to the white cis patriarchy then i can reccomend this game. if your a brave social justice warrior you will find this game very offensive and triggering and you need to stay far away from this and all video games because your a special snowflake and the worst crime another human can comit is hurting your precious precious feelings.
Helpful? Yes No Funny
Heli-Chan
( 159.1 hrs on record )
Posted: June 27
No place program for the sogram in the lowgram you toejam ( ͡° ͜ʖ ͡°)
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
493 of 513 people (96%) found this review helpful
515 people found this review funny
Recommended
212.7 hrs on record
Posted: May 31
>Buy game in sale in 2013
>Spend 4 months attempting to get to the Mun
>Spend the entire space program's budget on a Mun mission
>Forgot solar panels
>Jeb crashed due to lack of power. He is now stranded
>Tell him I'm mounting a rescue mission
>Get sidetracked flying planes to get more funds
>Accidentally learn to dock
>Somehow get to Duna
>Mannded Duna landing and return
>Make huge space station in Kerbin orbit
>Turn it into a huge ship by docking engines
>Fly to Jool and visit all the moons
>Have spare fuel so decide to do a grand tour of the solar system
>Finally done everything I came out to do. Start playing other games
>Be me 2016
>Load up KSP after new update to check it out
>Jeb still stranded on Mun
10/10
Was this review helpful? Yes No Funny
203 of 214 people (95%) found this review helpful
161 people found this review funny
Recommended
227.7 hrs on record
Posted: May 31
ruined my ability to enjoy science fiction movies.
Was this review helpful? Yes No Funny
220 of 236 people (93%) found this review helpful
129 people found this review funny
Recommended
280.5 hrs on record
Posted: May 31
If you have kids, get this game for them. If you don't have kids, get this game anyway.
Was this review helpful? Yes No Funny
120 of 127 people (94%) found this review helpful
54 people found this review funny
Recommended
15.6 hrs on record
Posted: June 3
This is Major Jeb to ground control
I'm stepping through the door.
And I'm floating in one of the most peculiar ways.
And the stars look very different today.
~10/10, great game.
Was this review helpful? Yes No Funny
112 of 133 people (84%) found this review helpful
119 people found this review funny
Recommended
267.7 hrs on record
Posted: May 29
Using Hyperedit I successfully:
Crashed Kerbin into Jool.

Using the BDarmoury I successfully:
Destroyed the space center.

Using Rockets I successfully:
Killed thousands of Kerbals.

Using Alcohol I successfully:
learned not to drink and rocket science.

Reviewing Kerbal Space Program I successfully:
Reviewed Kerbal Space Program.


11/10 would drink and rocket science again.
Was this review helpful? Yes No Funny
71 of 84 people (85%) found this review helpful
87 people found this review funny
Recommended
13.1 hrs on record
Posted: June 1
- Launched into space.
- Climbed outside to get science.
- Accidently let go.
10/10 would burn in atmosphere again.
Was this review helpful? Yes No Funny
47 of 51 people (92%) found this review helpful
8 people found this review funny
Recommended
112.1 hrs on record
Posted: June 6
So i told myself when i reached 100 hours on this game i would write a review. Well, here i am.


So i got this game around summmer 2015, after wanting it for a long time.
The game had just left early access and was in beta. (I just want to point out that i am very attatched to this game)
I adore this game. Most of my summer was spent playing this. (Before you say that isn't possible, i would like to point out my hours didn't add up as I ran the game from the .exe rather than steam.)

I would, and have, recommend this game to anyone who enjoys the feel of success, science, exploration, engineering, space, cute green creatures who you shall become the merciless god of as you stack them on top of each-other and use them as landing gear.

The only slightly bad thing about this game is the learning curve. I know the 1.1 update added loads of tutorials, 'cuz the old ones were exeedingly bad, but you will spend around 5 - 10 hours before you can do anything useful. Needless to say though it is worth it, and soon you will conquer the solar system!

Or, y'know, just abuse the various bugs the game has... that's cool....

Anyway, thanks for reading this review. If it helps someone buy the game, or spread the word, or anything, then i'm glad.

-- Simple Concept
Was this review helpful? Yes No Funny
47 of 56 people (84%) found this review helpful
86 people found this review funny
Recommended
987.2 hrs on record
Posted: June 3
Picked up a copy during its early access, have been in love with it since.
Was this review helpful? Yes No Funny
185 of 298 people (62%) found this review helpful
281 people found this review funny
Recommended
45.7 hrs on record
Posted: May 30
Before I played:
\\ _
   \( ͡° ͜ʖ ͡°)
    < ⌒ヽ
   /   へ\
   /  / \\
   レ ノ   ヽ_つ
  / /
  / /|
 ( (ヽ
 | |、\
 | 丿 \ ⌒)
 | |  ) /
`ノ )  Lノ
After I played:
/フフ         ム`ヽ
/ ノ)  ) ヽ
/ |  ( ͡° ͜ʖ ͡°)ノ⌒(ゝ._,ノ
/ ノ⌒7⌒ヽーく  \ /
丶_ ノ 。   ノ、 。|/
   `ヽ `ー-'_人`ーノ
    丶  ̄ _人'彡)
Was this review helpful? Yes No Funny
19 of 25 people (76%) found this review helpful
1 person found this review funny
Recommended
68.8 hrs on record
Posted: June 7
This is without doubt the best game i have played.
Was this review helpful? Yes No Funny