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 (21,959 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
964 of 1,009 people (96%) found this review helpful
4 people found this review funny
78.2 hrs on record
Posted: April 27
This game should be standard issue in school physic classes. Taught me more about orbital mechanics than anything else.
Was this review helpful? Yes No Funny
438 of 465 people (94%) found this review helpful
5 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
989 of 1,108 people (89%) found this review helpful
4 people found this review funny
722.0 hrs on record
Posted: April 27
10/10

Ruined Science Fiction Movies with now learnt knowledge of real-life Astrophysics
Was this review helpful? Yes No Funny
202 of 205 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.
Was this review helpful? Yes No Funny
297 of 339 people (88%) found this review helpful
1 person found this review funny
124.1 hrs on record
Posted: April 26
Early Access Review
I've wasted hours of my life in this game, lost countless nights of sleep, $30, several friends, and hundreds upon hundreds of rockets.

11/10 would recommend. Plus it leaves beta tomorrow.
Was this review helpful? Yes No Funny
279 of 318 people (88%) found this review helpful
1 person 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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251 of 285 people (88%) found this review helpful
1 person 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.
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193 of 214 people (90%) found this review helpful
1 person 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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169 of 183 people (92%) found this review helpful
1 person found this review funny
576.1 hrs on record
Posted: April 27
This is legitimately one of the best video games ever created. People can learn about real life science and have lots of fun to go with it. And you can blow up space frogs.
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257 of 302 people (85%) found this review helpful
1 person 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
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94 of 96 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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143 of 164 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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141 of 162 people (87%) found this review helpful
2 people found this review funny
61.1 hrs on record
Posted: April 26
Early Access Review
So im going to give you a short list of the pro's and cons and it will inevitably leave you with a sense of dread if this game is not already in your steam library (Shame on you!)

==PRO's==
  • Endless Fun
  • Insane Modding Community
  • As complex or as Simple as you want
  • Has a career mode for those who need goals
  • when things go just as you planned you get a giant smile on your face and when then go horribly wrong you get a bigger smile.

==CON's==
  • There is only so much in the time in a day to play this game, so if you only have 30 minutes a week to play you might have trouble getting into it. (But you should still buy it to support this awesome game)
  • The game is not free (And it never should be.. buy it!)
  • If you suffer from having only 2 hands and 2 eyes you may find it difficult to control and micro-manage a space research empire (Warp'ers Bewaaaaare)

So thats my little list as to why everyone should own this gem of a game.
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165 of 196 people (84%) found this review helpful
1 person found this review funny
2,784.4 hrs on record
Posted: April 27
Yha, Its pretty good.
Was this review helpful? Yes No Funny
173 of 208 people (83%) found this review helpful
1 person found this review funny
867.8 hrs on record
Posted: April 28
Have I played enough? Definitely not.
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76 of 80 people (95%) found this review helpful
1 person found this review funny
100.3 hrs on record
Posted: April 26
Early Access Review
94 hours on record with the steam release, about several hundred more before the steam-based purchase.
I can hands down tell you, this game is on the top 3 of a 28 year old gaming streak, and it makes you dream, yearn for the stars.
It fires up your creativity to points even you didn't think were possible, it gives you hope for humanity's destiny.
It can teach you rocket science, to boot!
EVERYONE NEEDS TO PLAY THIS SIM

My experience in short:
Recreation of real extraatmospheric missions
Messing with the physics, with the power of your personal space program - in other words, airplanes with fifty rocket engines, droppods launched from orbit, "martian" colonization endeavours, decoupler-based propulsion, making your kerbals (the humanoid LGM you control) withstand mach 12 -- very educational, much smart. yes. Excuse me, I need to go launch things into a sun now.
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74 of 79 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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115 of 140 people (82%) found this review helpful
1 person found this review funny
19.0 hrs on record
Posted: April 30
I blew up Kerbin.

100/10 Best North Korean Space Agancy simulator ever.
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66 of 69 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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103 of 123 people (84%) found this review helpful
1 person found this review funny
204.7 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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