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 (22,106 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 (18)

May 1

KSP 1.0.2 is up!

Hi again,

Just a very quick update this time, version 1.0.2 is now up:

Changelog:

v1.0.2 ==================================================

Bug Fixes and Tweaks:

Thermal:
* Fixed ships potentially overheating when splashed down.

Parts
* Small tweak to Mk16 parachute drag.

As always, you can get the latest version from our KSPStore, GOG, or get auto-updated on Steam.

Happy Launchings!

Cheers

110 comments Read more

May 1

KSP 1.0.1 is Up!

Hi Again,

We've just published KSP v1.0.1. This is a small revision patch to address some of the most noticeable bugs we encountered since the release of 1.0.

Some of these we knew about for a while, but couldn't fix in time for the release (as we approach publishing time, the risk of code-breaking and delaying the entire release outweighs any benefits in the potential fix), others we found out about during the weekend livestreams, and some others we found from your own feedback.

This patch isn't meant to cover every single bug, of course, just the more relevant ones. We're going to keep on with the bugfixing and tweaking as we move into development of version 1.1.

You can check out the complete changelog in our forums.

As always, you can get the latest version from our KSPStore, GOG, or get auto-updated on Steam.

Happy Launchings!

Cheers

56 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
74 of 78 people (95%) found this review helpful
2 people found this review funny
68.3 hrs on record
Posted: May 9
While it's not exactly bginner-friendly, Kerbal Space Program (KSP) is a brilliant game for what it achieves. What other game can boast of accurate portrayal of orbital physics, staging rocket sequences and interplanetary travel? Gravity is a difficult beast to tame!

You're drawn in by the relatively simple ship construction aspect where you put together your ship like building blocks, attaching parts one at a time with options to make certain parts attach symmetrically. Once you're on the launchpad though, ♥♥♥♥ gets real. You will fail a lot, with your rocket exploding, or tipping over, or messing up the sequence of stages.

Just leaving the atmosphere and establishing an orbit is a massive challenge, and that is still the early game! Sending probes and landers to other planets and moons, building space stations and exploring the far reaches of the fictional solar system; these are all possible. Beyond that, the Career and Science modes provide new tasks and objectives such as completing contracts or carrying equipment to perform various scientific experiments, and further still the Sandbox mode allows you to set your own goals.

Unless you're a genius or have a huge deal of patience you will need to refer to various tutorials, wikis, guides and discussions online. If physics scares you off you will probably find it hard to enjoy the game beyond its initial simple tasks. You'll need to be willing to learn new things to get the most out of this game.

KSP will likely give you a new appreciation of the space program of the 20th Century and what was achieved with the technology available at the time. Any person who's dreamed of working at NASA must try Kerbal Space Program.

Recommended!
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96 of 116 people (83%) found this review helpful
1 person found this review funny
643.9 hrs on record
Posted: May 15
I've already played this game for a couple of hours and I think it's pretty nice.
Was this review helpful? Yes No Funny
52 of 53 people (98%) found this review helpful
1 person found this review funny
2,196.5 hrs on record
Posted: May 4
Kerbal Space Program version 1.0.2. I've been playing the early access game for over 2 years, but now that it became official I thought I'd write a review. My review is very positive. (But see the caveat about version 1.0 below at the bottom).

(Full disclosure: I don't work for SQUAD but I do help write one of the mods for the game, so I am personally invested in this.)

Get This Game. For once a sci-fi game that is actual sci-fi and not science fantasy. It doesn't insult the intelligence of the player, and it speculates what-if, in a relatively reasonable way, only breaking a few laws of physics here and there where needed for gameplay, rather than breaking ALL of them constantly like most space video games do.

Kerbal Space Program as history:
Although the solar system in the game is artificially smaller than would realistically be possible (so it doesn't take as long to get things done as it really would), it still has all the parts and the right places to emulate historical real-world space programs. Don't be fooled by the cute derpy-looking Kerbals - you can use the game to see what it would be like to emulate historical actual space missions - space stations in low orbit, docking maneuvers, performing an Apollo-style "Mun" landing, send rover probes to "Duna" (which is Mars-like), and so on. All from gluing together parts and having fun.

(And if you really want to go all-out, there are user community mods out there that replace the game's solar system with the real thing, so you can really try these missions out in full size).

Kerbal Space Program as a 'tycoon' style game:

If you like the old style 'tycoon' games where you have to come up with a means of keeping your business afloat and research new technologies to do interesting things as you move on to bigger and more ambitious projects, then Kerbal Space Program Career Mode is for you. Start up a new game, pick "career mode", set Normal or Easy difficulty (do NOT use Hard until you've played a while), and you'll have the fun of trying to balance funding (for making better space center buildings, and for making the rockets themselves), reputation (for making future offers you see be better for you), and science points (for buying your way up the tech tree). Accept contracts, and try to fufill them cheaply so your space agency makes money from them to fund the other stuff you want to do. Don't fail them or else you'll lose funds and rep for it.

Kerbal Space Program as a mod platform:

From it's early access days, a user community of modders has grown, such that you can do just about anything you can think of with the game. As of this writing, because KSP 1.0.2 is relatively new, some of those mods won't work just yet, but they will after only a week or two. If past use is anything to go by that's about how long it takes for the modders to catch up to a new release. As Steam is not the only means of obtaining the game, and not even the first means of obtaining it, the company, SQUAD, has chosen not to support Steam Workshop for mods due to the way it would open up the chance for people to make Steam-only mods that would be unfair to those who bought the game in its early days and supported the company before the game was even on Steam. I support this decision, but it does mean you'll have to take a few extra steps to find the mods and install them. Look up "KSP" on curse.com and look for Kerbalstuff.com. most mods are in both places.

Kerbal Space Program as "edutainment":

The game is quite educational, but in that good sneaky fun way, where you don't realize you're learning - you're just trying to get stuff done in the game and in so doing learning stuff along the way. If you've got a teenager or pre-teen at home, give this to them. It does something that is really hard to do - it *demonstrates* though gameplay how a mathematical concept works, visually, without revealing the actual formulas, in such a way that the hard math can come *after* the intuitive understanding. Usually what makes math hard is that the understanding and 'feel' can't happen until *after* you understand the numbers. But here, it lets you play with the phenomenon first, and understand it later after its behavior has becomine intuitive to you, rather than the other way around.

Get. This. Game.

A caveat:

My review refers to the 1.0.2 version of KSP and emphatically NOT to the 1.0 initial release that came out a week before and had a critical re-entry bug. Had I written the review about the 1.0 version, it would not have been as kind. The 1.0 release was rushed by about a week. The 1.0.2 release from a week later was MUCH better, and is probably what should have been the 1.0 release.

R.E. The KSP 1.0 re-entry bug: You may read reviews by people complaining about re-entry being broken when 1.0 game out. Those reviews weren't wrong *at the time* they were written. KSP 1.0 was rushed out with a re-entry bug that was very unfair, and importantly, really obvious so it's hard to imagine how they missed it. Adding a heat shield actually *caused* the ship to blow up on re-entry because adding it made the vessel flip nose-first, rendering the heat shield worse than useless as a part. If you see reviews complaining about this behavior, be aware that they are stale and referring to an old version.

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49 of 51 people (96%) found this review helpful
2 people found this review funny
73.6 hrs on record
Posted: May 22
It's been quite a ride. Four long years of development, cool stuff, accidentally education, and the Kraken... and here we are. One point oh (point whatever!) And oh, are things different! But that's all the past! Let's talk about the present.

This is a game in which you go to space repeatedly, success optional.

Most of the entertainment value in this game is either limited or boosted by your imagination. You can just throw some bits together, hit the go button and see what happens! What's that? There are Kerbals in there? I'm sorry, I couldn't hear you over the sound of my massive explosion device. Conversely, you can put things together in a very particular manner and create the perfect interplanetary shuttle. It's all up to you. Your sandbox is the solar system. Go play. Due to the nature of things and such, this game would be truly incredible in a classroom environment, yet it's just as fun alone at home.

Now, for the less sandbox-oriented among us (or just the people like me who enjoy progression,) there's a career mode! This time, you start out with the exclusive ability to make short range, manned, ballistic missiles! FOR SCIENCE! Seriously, you generate Science! from everything, and you use it to unlock more things to build better missiles to make more Science! Be careful though. Don't want to blow up too many bits, because you have funding to worry about now. You should also take care of your Kerbals to keep your reputation acceptable.

Also the camera shakes, there's complicated aerodynamics, there's thermodynamics, there's moresodynamics, there's orbital mechanics, there's resource mining (which you can MAKE FUEL with,) there's management, there's pretty explosions, there's good sound effects that are also deafening, there's accidentally education, and so much more for only some money!

However, the tutorial is absolutely useless and frustrating. Ignore it, fumble around for a while, and utilize the internet to learn what you must know when you decide that trial and error is so last era.

There's not really much else to talk about... All the other details are either not noteworthy, neutral, or better kept quiet... so...

Go build some intercon- advanced spacecraft.
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59 of 68 people (87%) found this review helpful
3 people found this review funny
96.9 hrs on record
Posted: May 7
You will never forget your first Mun landing.
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48 of 53 people (91%) found this review helpful
4 people found this review funny
183.4 hrs on record
Posted: May 15
Orbital mechanics sounds like a boring subject until you throw a few green guys into a rocket ship that you have to pilot around a fictional solar system.

This belongs on your computer and in every science classroom across the globe.
Was this review helpful? Yes No Funny
38 of 42 people (90%) found this review helpful
1 person found this review funny
130.6 hrs on record
Posted: May 15
Best game ever. Taught me orbital mechanics better than any teacher ever could.
Was this review helpful? Yes No Funny
43 of 53 people (81%) found this review helpful
1 person found this review funny
353.0 hrs on record
Posted: May 12
>Designs rocket with large fairing
>Launches
>Begins gravity turn
>Payload phases through fairing wall
>Entire craft explodes, leaving only the probe core
>90k in the hole

10/10 would meet Kraken again.
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38 of 47 people (81%) found this review helpful
2 people found this review funny
39.1 hrs on record
Posted: May 12
I am now banned from ever working at NASA. 10/10
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32 of 38 people (84%) found this review helpful
1 person found this review funny
40.4 hrs on record
Posted: May 11
The best simulation game ever!

I played this game before it came on Steam, and I really love it!
So I tought I should make a review because people need to know the hard truth about this game.

First of all, let's take a look at the graphics..
The game looks like some kind of a cartoon, which makes it really cool.
I shouldn't have done it in any other way, it just made so unique.

Than we got the possibilities.
This game has an enormous amount of modifications you can add to your game, by easily dragging into a folder..
With the mods your game get so much more intresting to play, with a million possibilities.
Even without modifications the game is still amazing to play, with many things to discover.
There is even a multiplayer modification which, of course, makes it posible to play together with friends, or just random people, and it's soo cool!

The developers of the game are amazing too, they listen to their players and add suggestions to the game.
Or sometimes add stuff to the game that has been inspired by amazing modifications.

You can easily play this game the whole day without noticing the time flying, every time your ship crashes you are challenged to make a ship that actually can fly to the moon, and if it doesn't work you try again, and again and you guessed it AGAIN!
Some people maybe think this is annoying but I think it's a good side of the game, instead of beating the game easily, you are challenged every time, in this way to get more into the game and learn more and more about real life space missions.

You even got different things to do, you can do training missions or other kind of missions.
You can start a carreer, play in sandbox-mode or even play in science mode, which makes it possible to both do research on planets for science points, and make ships using all the parts u want without unlocking them.

You can go to soo many different planets, which are made so cool.
They all got things like drag and stuff based on real planets, however some are changed a bit because it's still a game.
For example, taking of at Kerbin - Earth requires you to have a ship with quite some power, while taking off at the Moon is much easier because of the gravity.

There probably are some bad sides of the game, but I actually didn't discover those yet.
However if you are using modifications they may sometimes don't work quite well together and sometimes make your game suddenly crash. - But this isn't the fault of the developers so don't blame them.

If you want to see someone else's perspective of the game you should check out some other reviews, but my advice is to really buy this game if you like the things you see.
I would also recommend to watch some gameplays on YouTube, and maybe if you want you should search the internet for Kerbal Space Program Mods to see what kind of modifications you could add to your game when you bought it.

I will definitly keep playing this game for a long time and if I needed to give this game a mark, it would absolutly get a 10/10!
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22 of 24 people (92%) found this review helpful
1 person found this review funny
66.3 hrs on record
Posted: May 6
Before KSP : normal person.
After KSP : astronomer, rocket scientist, and space engineer.

10/10 - Would launch Kerbals to their deaths again
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19 of 22 people (86%) found this review helpful
3 people found this review funny
55.1 hrs on record
Posted: May 14
This game is awesome. Seriously, it's really, really awesome. And it teaches you physics. So you pass your exams. Win-win.

I feel like listing the pros and cons. Because that's what everyone else does. And it gives you a better idea of the game.

PROS:

- Physics: Explosive stuff explodes, stuff that looks like a plane flies (mostly), spaceships fly like spaceships, stuff that looks like a rover WILL flip over.
- Visuals: The graphics are not as good as some games, but they are definitely good enough. I particularly like all the small details, like the way the RAPIER engine puffs before going out, or the cockpit details, or the little ridges on the engines, or the way the landing gear closes up.
- Career Mode: Feels like you're really running a space agency, and you really feel worried when you crash a rocket into a building and don't have enough money to rebuild it.
- Sandbox Mode: It's also nice to be able to say, "Stuff it, I can't afford this, nor can I wait long enough to invent really powerful rocket engines! Give me everything for free!"
- The way spacecraft just feel like they 'work': The difference between the different engine sizes, the weight distribution problems, the new aerodynamics model, everything theoretically 'works'. My spaceships don't actually work. They explode.
- The difficulty: This game is hard. Very hard. But only if you make it so. If you stick to low-altitude flights and don't try to go to Jool straight away, this game is very possible to play. And slowly, very slowly, you'll get better, and be able to get to Jool.
- Small green beings: Kerbals themselves are very cute. I want one. Anyone know where to buy a Kerbal Plushy?
- Mods: When 1.0 was released, I deleted all my mods and started afresh, so I don't know if they still work. But in Beta, I was greatly enhancing my experience with mods like BDArmoury, B9 Aerospace, KW Rocketry, Chatterer (A completely useless but nonetheless fantastic mod) and Infernal Robotics.

Cons:

- Difficulty: Yeah. I know. That was a Pro as well. But as I said earlier, some things are very hard. Like getting to Jool.
- Lack of an autopilot: The game could do with someone who could fly. Because for a long time, you won't be that someone.
- The load times: This game has a lot to load in, and it takes a long time.
- Lack of stuff: This game has a lot of stuff, but could do with more.
- Problems with adding stuff to wings: Elevons, Landing Gear, and engines are really hard to fix on properly.
- Lack of smaller pre-built wings.

So in conclusion, this game is very very very more verys than I can be bothered to type Goood.

Thanks for reading!
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15 of 16 people (94%) found this review helpful
2 people found this review funny
325.3 hrs on record
Posted: May 8
Why are you still not playing it?

This game is as pivotal to sandbox games as was minecraft , but in a completely different department - depth.

Simulated solar system, chance to experience and learn real (almost - still cut some corners - no la-grande points, orbits are mostly radial without additional simulation after a swing, but none the less) rocket science.
Sense of achievement with this game is as huge as in dwarf fortress, when through error, misery, failure, countless tries you finally get your ♥♥♥ to <s>mars</s> Duna. And it only goes up from there.

And then there are mods. My. GOD. Modding scene for this game gone above and beyond:
You want attachment systems? Sure.
You want to mine? Since 1.0 - embedded, but there are also kethane and open resource system.
You want to build rockets on distant planets - sure - Extraplanetary launchpads got you covered.
You want even more? How about warp drive and additional systems mod?
Want more realism? TAS Mods got you covered with food, water and waste resources.
Want working actuators? Infernal robotics got you covered.

I got more than 600 hours of gameplay out of this game (300+ on steam, 300 prior) and it still has a little bit more to offer, and with newer mods coming around - it is always fun to occasionally get back to it.
This game is like a good song or a good movie - memorable, can be watched/listened a dozen times and never gets old.

So, once again, why are you still not playing it?
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16 of 18 people (89%) found this review helpful
1 person found this review funny
8.0 hrs on record
Posted: May 6
Attempted to put a kerbal in the sun.
Slingshotted off, and broke orbit.
Jeb is now moving away from the known universe 53.5 times the speed of light

Honestly though, I cannot recommend KSP enough.
This is not a game. it is an experience.

11/10 would transcend time and space again
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19 of 24 people (79%) found this review helpful
1 person found this review funny
150.0 hrs on record
Posted: May 16
Orbital mechanics for fun and profit. It is the best game. If you need a hand getting started look up Scott Manley on Youtube, he has an excellent series of tutorials and miscellany on KSP. Alternatively just play in Sandbox until you make things which don't explode immediately (or things which do ...for science).

Note: You may actually end up learning science so you can get better at this game.
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18 of 23 people (78%) found this review helpful
1 person found this review funny
31.1 hrs on record
Posted: May 5
After 3 Hrs of hard work .

Losing more than 6 Kerbals .

I came to know that parachutes doesn't work on Mun ( Moon ) .

(10/10) Must buy , Must play Game.
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13 of 14 people (93%) found this review helpful
1 person found this review funny
253.9 hrs on record
Posted: May 7
I bought this game pre alpha... I watched it grow and grow until now finally its out of beta and is officially released 1.0. The developers of this game should be commended for sticking to their guns and finishing the project. Each update provided a TON of new stuff, slowly changing this game from a sandbox into a fully functional single player game (which still can be played in sandbox mode).

I have over 240 hours playing this game and have still not achieved all thats accomplishable. This game is the ♥♥♥♥. Plain and simple. Squad, thank you for putting the time and effort into finishing this project and not walking away with everyone's money as so many early release developers have done. This is what early access is all about!
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14 of 16 people (88%) found this review helpful
2 people found this review funny
12.4 hrs on record
Posted: May 22
How did i not write a review for the great game. I think it amazing to get to experience space travel with todays tech imaginations. I was born too late to discover the earth and too soon explore the stars. For now i have the internet with cat pictures and ksp
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26 of 38 people (68%) found this review helpful
1 person found this review funny
199.1 hrs on record
Posted: May 4
I lost my Girlfriend, my job, my cat, my house. my friends, droped out of school, and im forced to play this game at a libary now. best game ever. 10/10
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16 of 20 people (80%) found this review helpful
1 person found this review funny
8.3 hrs on record
Posted: May 11
Boiled down to it's very core it's a physics symulator. Under that catagory, it's the best physics symulator out there. Go to another generality, say it's a space game. It's the best space game I've ever played. Go specific, it's a game where you start on one big potato, and explore other potatos in space. It's unique, it's physics-ey, it will teach you about space, and it's got mods flowing from every crack. 10/10, this game sets a really high bar, and then jeb flies a rocket all the way up to that bar, then runs out of fuel on the burn back to Kerben.
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