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 (21,972 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

109 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

55 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
457 of 488 people (94%) found this review helpful
25 people found this review funny
36.2 hrs on record
Posted: April 28
Parachutes do not work on the moon. Many Kerbals died to bring us this information.

11/10
Was this review helpful? Yes No Funny
212 of 215 people (99%) found this review helpful
4 people found this review funny
806.8 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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285 of 326 people (87%) found this review helpful
9 people found this review funny
271.8 hrs on record
Posted: May 1
I got an asteroid and made it orbit the mun. Now the mun has a mun. 11/10
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254 of 289 people (88%) found this review helpful
5 people found this review funny
427.4 hrs on record
Posted: May 1
Mission Control: Launch in 10... 9... 8... 7...
Jeb: I'm already at the Mun guys...
Mission Control: WHAT? How?
Jeb: Well, the rocket blew up and blasted me 11,000 kilometers
Mission Control: Not again...

But seriously, buy this game. It's fantastic.
Was this review helpful? Yes No Funny
196 of 219 people (89%) found this review helpful
6 people found this review funny
12.2 hrs on record
Posted: April 29
Got to the moon with 2 kerbals, half way back to kerbin I realized I left Bill on the Mun.

10/10
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260 of 307 people (85%) found this review helpful
4 people found this review funny
12.8 hrs on record
Posted: May 2
>Wanted to reach Mun
>Couldn't do it
>builded the most ♥♥♥♥ed up spaceship I could imagine out of frustration
>worked better than all my other attempts
>Crashed into Mun
> Happiest moment of my life

11/10 would put 28 rhino engines on rocket again
Was this review helpful? Yes No Funny
97 of 99 people (98%) found this review helpful
1 person found this review funny
355.6 hrs on record
Posted: May 1
Truly Epic. One of those games I keep going back to (300+ hours as I write this).

Being a simulation, the number of situations you can find yourself in is nearly endless.

My most recent Kerbtastrophe occurred when my unmanned mapping and science probe (JoolStar1) was about to arrive at Jool after nearly 4 years in flight. Actually, it happened quite a while before that, I just wasn't aware of it.

I switched to the probe, ready to fine-tune my approach so I could cut through the atmosphere, bleeding off speed without wasting fuel.

Something was wrong. The probe didn't respond to inputs. That's when I realised I hadn't deployed the solar panels before leaving Kerbin orbit!

Cursing, I tried to deploy them. Nothing. I mashed the button repeatedly. Still nothing. I checked the batteries... Empty!

Since I didn't have a kerbal on board to do an EVA, there was nothing I could do except watch helplessly as JoolStar1 sailed straight past its destination, a failure destined to orbit the sun forever.

This game is all about failing repeatedly (and hilariously) until a Darwinian process of attrition results in an understanding of how to build, fly and land rockets.

I can't recommend it highly enough
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144 of 166 people (87%) found this review helpful
4 people found this review funny
92.7 hrs on record
Posted: May 1
Not as boring as a simulator, not too cartoony to loose immersion. Just perfect. 10/10
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174 of 212 people (82%) found this review helpful
3 people found this review funny
867.8 hrs on record
Posted: April 28
Have I played enough? Definitely not.
Was this review helpful? Yes No Funny
76 of 81 people (94%) found this review helpful
6 people found this review funny
74.9 hrs on record
Posted: May 3
To begin, I guess I should give a short description: Essentially, KSP is a fairly realistic simulation game where you take control of and guide the nascent space program of a race of small green men and women from a planet named Kerbin. You will build your own vessels, choose your targets for exploration, colonization, scientific endeavor, etc, and blast off for space. The construction system is incredibly robust and fun to use, and, because of the level of customization available, tends to mean that no two ships will ever look or behave exactly alike. There are no food or oxygen or water needs on ships (several mods change this if you want), but the actual mechanics and physics of the game are convincingly accurate, and make for a, while unforgiving, very fun game, because the feedback is extremely consistent. A mistake will kill you EVERY time, unless something hilarious happens (this is actually one of the great parts of playing KSP).

I cannot say enough positive things about this game. I purchased this originally in April of 2013, before it was on steam, and only purchased it on steam now that it has officially released. KSP has few goals, and in sandbox mode, it has none, but goals are not the reason to play KSP. The first time I successfully put a Kerbal in orbit around his home planet, I was dancing around my dorm room, and the first time I landed a Kerbal on the Mun, I felt a sense of accomplishment I have quite literally never felt in a game before. Now, over the course of what must be at least a thousand hours of play, I have built massive colonies on Laythe, the Mun, Minmus, Duna, Eve, and even Ike, I've built huge orbital stations around various planets, and I've even built floating cities in the clouds of Jool and Eve through the use of just a few of the thousands of mods available. I've built resource collection and transport systems including storage, mining, and transport operations. I've explored hundreds of different areas with probes, landers, and vehicles, and yet, to this day, I still play this game at least two to three hours a week, and I'll go on KSP binges several hours long when I think of a new challenge to set for myself. Currently, a friend of mine and I are in a little friendly competition for who can build the most epic Duna colonization project. If you can't tell by now, if you want an 'on rails' game where everything is spoonfed to you, just leave now. This game is most certainly NOT for you. The contract system is honestly only there to give a person inspiration.

But if you want a game that throws challenges at you that will test every brain cell you have, and pound your face into the ground mercilessly if you make even the slightest mistake, then KSP is your game. And when you finally put a Kerbal safely on the Mun, you just might understand why so many people write such glowing things about KSP.
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67 of 70 people (96%) 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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116 of 142 people (82%) found this review helpful
2 people found this review funny
19.4 hrs on record
Posted: April 30
I blew up Kerbin.

100/10 Best North Korean Space Agancy simulator ever.
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80 of 90 people (89%) found this review helpful
1 person found this review funny
108.2 hrs on record
Posted: April 30
In my Steam library, there are about a half dozen games that are in a special category called "All Time Greats". Civ IV is there. Skyrim is in there.

KSP is in there.

Note my play time does NOT include the 50-100 hours I put in before the game was ever on Steam.

Simply one of the best products in the last decade, KSP is not your typical "game". It's a software toy. You tinker. You experiment. You adjust. You tweak. And you have a grand time doing it. KSP is not a game that is going to hold your hand and help you build a super-deluxe space rocket that can go to the Mun or Eve with ease. If it did that KSP would not be any fun. Besides, if someone wants that Buzz Aldrin's Space Race is available for sale on Steam.

Instead, you get better at the game. You develop an understanding of Newtonian Physics - more than you ever thought you would. You build massive rockets and undertake interesting expeditions. You'll grin the first time you get a rocket into orbit. You'll pump your fist when you land on the Mun for the first time. And you'll continue having fun.

What are you waiting for? Go buy it!
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103 of 124 people (83%) found this review helpful
1 person found this review funny
209.2 hrs on record
Posted: April 28
Warning: this game is like crack. Don't buy if you have a life, a work, a family, a dog or anything else that requires you to actually DO anything else
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83 of 96 people (86%) found this review helpful
2 people found this review funny
325.3 hrs on record
Posted: May 1
There are very few things that are so good that everyone should at least try them.

KSP is among the top of that list, regardless of your age.
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84 of 100 people (84%) found this review helpful
1 person found this review funny
164.8 hrs on record
Posted: May 2
Step 1. Build a rocket
Step 2. Launch rocket, only to realize that you didn't put fuel on your ship
Step 3. Get fuel, set to launch. The thruster you chose is too weak to move your rocket
Step 4. Get a ton of boosters
Step 5. Rocket leaves launch pad, booster overheats, blows up entire ship
Step 6. Re-evaulate entire game now that you have killed Jeb and realize that you will never have another Badass Kerbal
Step 7. Reset and repeat

Best rocket blowing up/personnel management game 2015 10/10
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57 of 60 people (95%) found this review helpful
1 person found this review funny
106.5 hrs on record
Posted: April 27
Pre-Release Review
Kerbal Space Program, AKA "One Thousand Ways to Definitely NOT build a rocket."

Coming from a physicist, I love this game, and all of my physics/math/CS/engineering friends love it too. Granted that's a pretty narrow selection of people, but judging from all the other good reviews, I'd say our opinions reflect the general consensus.

You should buy this game. Then you should go tell everyone you know about it. Then maybe public opinion on space exploration will get a bit of a nudge back toward where it belongs.
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65 of 73 people (89%) found this review helpful
1 person found this review funny
64.2 hrs on record
Posted: April 27
Mission Control asks me to put a craft into orbit.
Third attempt, looks like Jeb's gonna be just a little short on fuel again.
Burns all his fuel because he's not gonna make orbit anyway.
Realizes that he did in fact achieve Orbit.
Mission Control informs him that they didn't tell the recovery team Jeb was staying in space, so they are still looking for him.
Jeb is about to resign himself to being stuck in space when he has a bright idea.
Climbs out of pod and uses monopropellent jetpack to attempt to push his pod into a decaying orbit.
Succeeds on pushing pod into decaying orbit: "Mission Control, I'm coming home!"
Few minutes later, Jeb and his pod burn up on re-entry.

R.I.P Jeb :'(

Great game, I've had lots of fun with it so far, and reaching orbit is the farthest I've manage to make it. It's difficult to pick up, but if you have the patience to learn it, it's totally worth it. At the ~$40 asking price it's worth more than 99% of AAA $60 games, imho.

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79 of 95 people (83%) found this review helpful
2 people found this review funny
638.5 hrs on record
Posted: May 15
I've already played this game for a couple of hours and I think it's pretty nice.
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68 of 81 people (84%) found this review helpful
1 person found this review funny
579.6 hrs on record
Posted: April 30
Wonderful game. Long live games that encourage learning through actual fun!
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