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 (478 reviews) - 94% of the 478 user reviews in the last 30 days are positive.
Overall:
Overwhelmingly Positive (31,443 reviews) - 97% of the 31,443 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.

327 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.

173 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 (478 reviews)
Overall:
Overwhelmingly Positive (31,443 reviews)
Recently Posted
The Butcher
119.2 hrs
Posted: August 27
Get the game, just get it. Why are reading this, click the add to cart button now. Buy the damn game! Stop reading this review.

You know, you are really driving me insane. Why have you not gotten KSP yet?
Helpful? Yes No Funny
almoSTFUn
506.8 hrs
Pre-Release Review
Posted: August 27
I don't have 506 hours in the game..
I can barely make it out of orbit
10/10 would glitch again
Helpful? Yes No Funny
MLGxXxPROxXxSCOPES
169.2 hrs
Posted: August 27
Product received for free
Very good game, plays like a dream worth the money if you didnt get it for free.
Helpful? Yes No Funny
Aririnkitaku
130.1 hrs
Posted: August 27
Probably the best space sim as of 2016.

Genuinely fun to play & stays that way no matter how long you play it for.
Helpful? Yes No Funny
00
49.0 hrs
Posted: August 27
This game should be taken as a standard for early access games. The developers came in with a plan and didn't stop until they succeeded.
Helpful? Yes No Funny
CGM
6.0 hrs
Posted: August 27
Tough game to learn if you're stupid but if you give it some time and research some things it would become enjoyable testing out new rockets and ideas
Helpful? Yes No Funny
Th3Harbinger
56.2 hrs
Posted: August 27
This game is totally worth the money. I like open world games but get distracted by side-quests too much and never finish the main story. With KSP this isn't an issue since there is no story. 10/10
Helpful? Yes No Funny
Spike
231.9 hrs
Posted: August 27
A game for builders and those looking for a true challenge.
The amount difficulty in accomplishing anything at all in this game makes every accomplishment and milestone is incredibly fulfilling. Successfully getting into orbit, reaching the Mun, landing on the moon, then to the farther moons and planets. I've played probably 50 more hours from prior to owning on Steam, and I still have only made it to Eve once, and never to some of the farthest planets. The modding community is amazing as well and with a few mods this game couldn't be better.

Among many other great ones, must have mods: MechJeb2, RemoteTech, and StageRecovery
Helpful? Yes No Funny
Monkeyslilbr0
35.4 hrs
Posted: August 27
As a former astronaut, I find this game incredibly inaccurate and offensive to the profession. This game is massively simplified to a point in which rocket science may be likened to Legos. This game is perfect for children who like to boast in the YouTube comments section about how they're smarter than everyone else because they get good grades in middle school and build elaborate structures in minecraft. If you're a 12 year old who thinks you're the ♥♥♥♥, this game is perfect for you; for anyone who is actually smart like myself, go to Harvard and use your time usefully learning astrophysics.
Helpful? Yes No Funny
microGRAM
520.2 hrs
Posted: August 27
This game was in development for a loooooong time. The whole journey was available for people to play along the way as they built it. I started sometime around version .20 back in 2013, but the first available version was back in 2011.

This is the best game I have ever played. I don't even hesitate to make that statement.

I have been to all the planets and moons with probes and with kerbals, yet here I am still playing KSP. There is ALWAYS something new to build and do; always some new mission to come up with in your head.

Then when you add in the amazing community... and the mods... ohh all the mods... again, this IS the greatest game ever created.
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
181 of 194 people (93%) found this review helpful
199 people found this review funny
Recommended
118.4 hrs on record
Posted: August 12
Builds rocket that can leave launchpad

Forgets parachute


Builds rocket that can leave atmosphere

Forgets heatshield


Builds rocket that can go to the mun

Forgets landing legs


Builds rocket without forgetting anything

Forgets real life


Remembers parachute
Was this review helpful? Yes No Funny
168 of 189 people (89%) found this review helpful
202 people found this review funny
Recommended
2,015.6 hrs on record
Posted: August 12
Not sure if I'm into this game... Need to play a bit more to confirm...
Was this review helpful? Yes No Funny
127 of 148 people (86%) found this review helpful
73 people found this review funny
Recommended
256.7 hrs on record
Posted: August 10
This game made me discover Scott Manley. 10/10 - Would discover Scott Manley again.
Was this review helpful? Yes No Funny
89 of 101 people (88%) found this review helpful
81 people found this review funny
Recommended
233.4 hrs on record
Posted: August 5
1 hour in: Bookmarked useful orbital manuvers...
10 hours in: Put sitcky note reminders on screen...
50 hours in: Doodled rocket designs on the back of any avalibe piece of paper...
100 hours in: Drew the Kebin system on desk for mission planning...
200 hours later: Wrote mission plans and equations on walls...

10/10 Would deface walls again.
Was this review helpful? Yes No Funny
75 of 84 people (89%) found this review helpful
71 people found this review funny
Recommended
544.2 hrs on record
Posted: August 12
I've learned at lot more about space in this game than I did in school.
I also kept missing school because I was playing it instead.
Was this review helpful? Yes No Funny
29 of 29 people (100%) found this review helpful
4 people found this review funny
Recommended
29.6 hrs on record
Posted: August 10
Ok, i've got lots of thinks to say about KSP, but I'll try to be clear, so let's begin!
This game nowadays is the best flight simulator i ever seen.
The potentials of this game are endless, you can do everything you want!
But this game wouldn't be the same without its community.
The KSP's comunnity is on of the best comunnity in the game's world!!
Seriously! I don't have many hours on the game (I hope not for too long ;) but i've never seen rude persons (yes, you'll say "This game is only Single Player!") but, trust me, the community is amazing!
I'd like to thank everyone who helped me when I started playing.
There are tons of useful mod, and if you have any questions, certainly there will be an answer in some forums or in some webpage.
Buy this game absolutely, specially if you are smart and you like to planning and studying the wounderfull game's mechanics.
Was this review helpful? Yes No Funny
30 of 36 people (83%) found this review helpful
42 people found this review funny
Recommended
218.2 hrs on record
Posted: August 1
Be Jebidiah Kerman
You cannot control your destiny
You ride rockets to infinity
and beyond you crash

Be Me
Build rockets that have no sense
Somehow it orbits
start the descent
heat builds
landing gear destroyed and lost to the inferno
deploy chutes
first chute gone lost in the flame
second chute holds but does not slow
third deploys
the last hope
hit the ground and the science pod explodes
but hey, Jeb is ok!
Was this review helpful? Yes No Funny
26 of 33 people (79%) found this review helpful
15 people found this review funny
Recommended
23.2 hrs on record
Posted: August 16
< Be me
< Download KSP
< Launch ♥♥♥♥♥♥ space shuttle
< Stage it incorrectly, first Kerbal dead.
< Google "KSP Tutorial"
< See Scott Manley KSP Tutorial for beginners
< Watch entire series
< Go back into game
< Im an expert now, NASA, sign me up
< Launch space shuttle, get into orbit
< Success
< Want to go to the Mun
< Go to the Mun after days
< Start to draw blueprints for space shuttles in class
< Come home, make shuttle, go to Mun once more.
< Bring home space rocks
< Apollo 18 all over again c;

jk

< Want to go to other planet
< Make space station, modeled after the ISS
< Decide to actually buy game from steam


< Launch ♥♥♥♥♥♥ space shuttle.

11/10 - Would launch ♥♥♥♥♥♥ space shuttle again.

BUY THIS GAME NOW.
Was this review helpful? Yes No Funny
16 of 21 people (76%) found this review helpful
14 people found this review funny
Recommended
92.9 hrs on record
Posted: August 2
Yay! I'm a rocket scientist now.
Was this review helpful? Yes No Funny
8 of 8 people (100%) found this review helpful
5 people found this review funny
Recommended
137.7 hrs on record
Posted: August 13
- built rocket
- forgot to stage it correctly
- Jeb dies, (again... for 25th time), on launch pad
- Jeb's family rises and revolts
- new rocket.... Aimed at Space Center, (THIS IS FOR JEB!!!)
- Conflict spreads through out solar system
- War.... War Never Changes...

10/10 , would start war on kerbin again!
Was this review helpful? Yes No Funny