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 (842 reviews) - 94% of the 842 user reviews in the last 30 days are positive.
Overall:
Overwhelmingly Positive (31,007 reviews) - 97% of the 31,007 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.

273 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.

170 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! Learn more
Recent:
Very Positive (842 reviews)
Overall:
Overwhelmingly Positive (31,007 reviews)
Recently Posted
DreamconfediST
( 876.3 hrs on record )
Posted: July 23
This game is a great thing for pepole who like non-violent, science, orbit phisyics, and exploration.
Helpful? Yes No Funny
TwistedKitty_
( 364.9 hrs on record )
Posted: July 23
I just love this game, can't descibe it any better! I would recomend it if you like rocket science! :)
Helpful? Yes No Funny
175ace
( 133.2 hrs on record )
Posted: July 23
I enjoyed watching my creations crash 10/10 would play again
Helpful? Yes No Funny
Kermit
( 751.0 hrs on record )
Posted: July 23
Screw physics class, just download this game. (It will most likely teach you more)
Helpful? Yes No Funny
Blashyrkh
( 38.5 hrs on record )
Pre-Release Review
Posted: July 23
Very satisfying to accomplish tasks such as getting into orbit and landing rovers on other planets.
Helpful? Yes No Funny
bashirh203
( 96.4 hrs on record )
Posted: July 23
Why are you even looking at the reviews? Just buy the game already!
Helpful? Yes No Funny
Melon
( 481.8 hrs on record )
Posted: July 23
I have played this game since I first got steam. I have about 450hrs on this game and roughly 200hrs on other versions of the game that steam doesn't record. And throughout the time I have played the game all I can say is that it is amazing and I love it. Good job squad and I recommend it, well worth the £30.
Helpful? Yes No Funny
egarrido027
( 28.9 hrs on record )
Posted: July 23
Just amazing...
Helpful? Yes No Funny
OfficialDuckStudios
( 24.6 hrs on record )
Posted: July 23
Product received for free
it is sooooooo good you need to buy it now!
Helpful? Yes No Funny
Matthew_Gamer
( 6.4 hrs on record )
Posted: July 23
This game is good in all of its shapes, except it is maybe a little bit overpriced. I refunded the game (no, i dont hate the game) because of the price. 30€ would be enough, not 40. im going to buy this game again when its on a sale.

Now, main part.

this is a game letting you do whatever you want, getting to the moon (mun) or making a space station! or just killling yourself. the game is pretty big, there alot of other planets you can visit. and there are a lot of mods that are extremely fun to play with. I give this game a 9/10.

(btw I go every year to italy and buy around 20€-60€ so i have to keep my money for other good games out there.)
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
223 of 247 people (90%) found this review helpful
200 people found this review funny
Recommended
277.6 hrs on record
Posted: June 25
270 hours in the game, still can't land on the Mun. 10/10
Was this review helpful? Yes No Funny
85 of 87 people (98%) found this review helpful
14 people found this review funny
Recommended
1,167.0 hrs on record
Posted: June 30
This game has one of the steepest learning curves of any game i've ever played, but it has also given me the greatest feeling of achievement from any game i've ever played.

When you land on the Mun for the first time, after mashing buttons trying to stabalise your craft and you barely make it due to the lack of fuel, there's no better feeling than knowing you have to do it all again and launch a rescue mission. (or you could just leave Bob there for science).....

I am a big fan of space, physics and science in general and playing this game has been an education for me. Because of KSP I have watched dozens of YouTube videos on astrophysics and aerodynamics I would have probably never watched without this game and learned a ton of interesting things, and i love that.

The game has a fantastic modding community with a huge variety of mods to add realism or give your game a futuristic sci-fi feel. A favourite mod of mine is 'Remote tech', I don't play without it.

This game produces some stunning visuals too as you drift through the vast openness of space, orbiting moons, chasing asteroids, collecting science and designing planes, rockets, trucks, rovers, probes, boats even helecopters and mech walker/transformer type sh** thanks to mods...

If you ever look up at the stars and wonder what it would be like to go there..... Well, this is as close as i'm ever gunna get.
Was this review helpful? Yes No Funny
63 of 64 people (98%) found this review helpful
19 people found this review funny
Recommended
65.3 hrs on record
Posted: July 6
After my son had a really bad day where nothing seemed to go right, we had a talk about how failing is part of learning.

I said "Remember how you watched me flying rockets on the computer?"

He said "Yeah, they kept going all over the place and smashing into the ground! Have you landed on the moon yet?"

"Nope. Crashed into it a couple times. Learning new things every time though."

"Can I play that game too!?"

-Kerbal Space Program: Lessons for life.
Was this review helpful? Yes No Funny
80 of 89 people (90%) found this review helpful
152 people found this review funny
Recommended
164.9 hrs on record
Posted: July 2
Still haven't successfully returned from anywhere but Minmus and the Mun.
RIP Jebediah I
RIP Jebediah II
RIP Jebediah III
RIP Jebediah IV
RIP Jebediah V
RIP Jebediah VI
RIP Jebediah VII
RIP Jebediah VIII
RIP Jebediah IX
RIP Jebediah X
RIP Jebediah XI
RIP Jebediah XII - Jebediah MMMMCMLXVII

10/10
Was this review helpful? Yes No Funny
54 of 55 people (98%) found this review helpful
22 people found this review funny
Recommended
180.2 hrs on record
Posted: June 30
I bought this game after trying the demo and having a lot of fun with it. I've played KSP off an on for a few years. The game has a very active mod-making fan base and this opens up a lot of new avenues for play. My best review of this game is anecdotal. (I sent this to a friend when I was only a few hours into play. I had no mods installed and was still very much learning the basics. Anyone who plays KSP might find this story relatable.)

"One of my test flights put 3 Kerbals into orbit. They were low on fuel so I did a retrograde burn to bring them home. Except that I didn't do a retrograde burn, I did a prograde burn. By the time I realized it, I had burned too much fuel to get them home. I reduced their orbit as much as possible, even using all available monopropellant from the thrusters. They were stuck in an elliptical orbit over 100km from the surface at their lowest point. With no way to return to the surface under their own power, I had one option; a rescue mission.

I built a new ship, one with sufficient fuel to achieve orbit and maneuver to intercept the lost ship which I dubbed "Lost Eagle." Lost Eagle had been fitted with docking collar and I guess that was just fate because it was now my goal to use that in the rescue effort. The rescue craft went through several iterations and multiple aborted attempts at rescue. The final design of the craft contained a single seat cockpit and a 4 seat hitchhiker pod which was used for it's relatively low weight. This would end up being the ultimate design flaw. It was my goal to grab the 3 stranded crew members, and transfer the rescue pilot to the pod before re-entry.

Docking is hard. I would say impossible but I've seen videos of people doing it and I know it can be done. But despite many hours and multiple misses. I had got Rescue 1 and Lost Eagle lined up next to each other about 200 meters away. I closed enough distance that I felt it would be close enough to 'jump.'

The first crew member from Lost Eagle jumped from his old ship to the new one. It went pretty smoothly, but in the process the ships drifted further apart. I did a corrective burn on Rescue 1 to get them closer together and jumped the second crew member. Success again. 1 left. He jumped, this time from the furthest gap. He too arrived successfully. I felt a rush of success, a feeling of accomplishment frequently lost in today's video games. Plenty of fuel for the retro burn. They were coming home. This process had taken hours and this was the payoff that would make it worth while.

The design of the re-entry craft was basically a can that held 4 crew with 4 radial parachutes coupled to a single seat inline cockpit with a shielded docking collar on the tip. She wasn't pretty, but she was light and efficient. The plan was to transfer the pilot to the reentry craft before they hit atmosphere, but I had discovered that I couldn't deploy the parachutes from the re-entry craft. It was a problem I had known about since earlier iterations of the craft but I was willing to work around the problem by deploying the chutes without decoupling the cockpit. The whole thing still landed successfully in my tests.

At 5000m above the surface, having survived re-entry. I pressed the spacebar to activate the chutes. I don't know if I double tapped it or if I had just had my staging backwards, but when I hit the space bar the cockpit split off from the hitchhiker can. Knowing full well that there was nothing I could do to save the pilot of Rescue 1 I watched in horror for a second as it hurtled to the ground with no possibility of survival. I quickly switched to the other part of the ship. I tried manually clicking on the parachutes to deploy them. The hitchhiker module contains nothing but chairs. No controls that could be used to deploy the chutes. Again I watched in horror as the 3 rescued kerbals hurtled towards their doom, the exile in orbit seeming to be safe alternative to the instantaneous death that awaited them at hundreds of meters per second.

The game would have let me revert to the launch of the mission, or even the assembly area where I could have redesigned the rescue craft that had doomed these 4 brave kerbals. I chose not to. I was angry at myself for the mistake. I had invested so much time into this and laziness had prevented me from fixing what I knew was a flawed design. The empty ship, Lost Eagle remains in its orbit a floating monument and constant reminder to any Kerbal that looks up, that taking the easy path or acting haphazardly can have terrible results. I will be reminded of this every time I play the game."

Was this review helpful? Yes No Funny
27 of 29 people (93%) found this review helpful
2 people found this review funny
Recommended
550.6 hrs on record
Posted: June 25
I bought this game a long time ago. I still beleive it was well worth the money. I have yet to explore the whole solar system yet alone the galaxy. (VERY good mod support via CKAN) Oh, and it is also one of the most educational games ive ever played. taught me more about physics than my entire highschool physics class =) The only negative I can think of, is the insane learning curve. Many people need to spend hours just figuring out how to get into their first orbit. But that is just one of the things that you must be willing to do in KSP. Aside from that, very highly recommended.
Was this review helpful? Yes No Funny
114 of 175 people (65%) found this review helpful
180 people found this review funny
Recommended
1.0 hrs on record
Posted: June 23
Nuked the polar caps and no climate change.

Checkmate lefties.
Was this review helpful? Yes No Funny
26 of 32 people (81%) found this review helpful
11 people found this review funny
Recommended
1,126.5 hrs on record
Posted: July 12
Why are you still reading reviews? Buy this game!
Was this review helpful? Yes No Funny
13 of 13 people (100%) found this review helpful
1 person found this review funny
Recommended
148.5 hrs on record
Posted: June 25
If you've ever dreamed of launching your own rocket, or wanted to figure out how to keep ships in orbit, or wondered how hard it REALLY is to dock with an orbiting station with intricate and precise maneuvering, or aspired to land a craft on the remote moons of a gas giant while sweating your fuel reserves, then buy this game and play it today. (Spoiler: Landing on planets is HARD, Docking is HARDER.) With a wealth of mods, a great developer team and a rabid fanbase, this game is truly wonderful. It appeals to the explorer in all of us, if you're the type of person where the journey IS the destination, then this game is for you. Definitely not for those who prefer PvP shooty-type-stuff. Luckily I count myself among the former and can rate KSP 9/10 - highly recommended.
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12 of 13 people (92%) found this review helpful
2 people found this review funny
Recommended
22.0 hrs on record
Posted: July 1
A game for those with a more creative mind set. Set a goal and feel great once you hit it. Landing on the moon for the first time by yourself is as close to nirvana as you will get outside of finally downing that dark souls boss you couldnt beat.
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