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 (515 reviews) - 93% of the 515 user reviews in the last 30 days are positive.
Overall:
Overwhelmingly Positive (31,180 reviews) - 97% of the 31,180 user reviews for this game are positive.
Release Date: Apr 27, 2015

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Recent updates View all (34)

September 13

Update 1.2 Pre-release is here!

Hello dear Kerbonauts!

Update 1.2 has finished its Experimentals phase and we’re excited to announce the launch of the Public Pre-release.

During Experimental testing a small team of experienced KSP players threw everything they’ve got at the game in order to help us catch as many bugs as possible, so that we could make the game as stable as it could be. Now we’re proud to say that’ve come to the point where we can finally release the open test build.

This ‘pre-release’ test build is for everyone to have a go before we officially released the update and you’ll be able to opt-in to get the Pre-release builds via the Steam betas, or, for the first time ever, through the KSP Store. Naturally, you’ll need own a copy the game beforehand in order to access these builds. This opt-in branch will run for a minimum of two full weeks before the release date of the final update (the final release date hasn’t been closed, so changes may occur).

To facilitate discussions of the Pre-release branch we’ll be opening up a temporary sub-forum for feedback. Additionally, a Pre-release project will be made available on the bug tracker to report bugs on.

Furthermore, we want to help the modding community by making the modding API public. Click this link and enjoy!

Finally, and as promised, you can get Porkjet’s awesome rocket parts package files here .

We’re almost there and we couldn’t be more excited. Stay tuned for updates and happy launchings!

199 comments Read more

September 5

Update 1.2 has entered Experimental testing!

Hello Kerbonauts!

Update 1.2 has just entered Experimentals! We’re eager to finally start the next phase of testing and getting ever closer to the 1.2 release.

During experimental testing a crack team of experienced and hand-picked KSP players will throw everything they’ve got at the game to make it bend, blend and break in many ways. The goal is to catch as many bugs as we can, and to make the game as stable as it can be before we make a public test build available.

Those of you who’ve been around for the 1.1 update will remember that we released a ‘pre-release’ test build for everyone to have a go before we officially released the update, and for update 1.2 we plan to do the same thing. Once the pre-release builds are available you’ll only be able to opt-in via the Steam betas, or through the KSP store.

We hope you’re as excited as we are about the coming weeks. Stay tuned for updates and Fly Safe!

207 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 Sept. 2016! Learn more
Recent:
Very Positive (515 reviews)
Overall:
Overwhelmingly Positive (31,180 reviews)
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24,877 reviews match the filters above ( Overwhelmingly Positive)
Recently Posted
Marlling
24.7 hrs
Posted: September 26
Time for me to achieve:

Orbit around Kerbin: 12,3 h

Fly-By of Mun + Safe return: 24,7 h
Helpful? Yes No Funny
Tahwylevisolpxe
47.3 hrs
Posted: September 26
A very fun and intriguing game.
9/10
Helpful? Yes No Funny
greywolfua
111.0 hrs
Posted: September 26
One of the coolest game i have ever played. Variety of mods can make the game much harder and more intersting if you want. The game increased my interest to space science.
Helpful? Yes No Funny
Fallow's Dark
277.0 hrs
Posted: September 26
Cash Grab
t'was good at first, but now bug's arent even being fixed
should not have left EA
Helpful? Yes No Funny
free
112.7 hrs
Pre-Release Review
Posted: September 26
Inept developer. Updates take ages, still no workshop support even though the game is very boring without mods.
Helpful? Yes No Funny
Prince Ferdinand
124.3 hrs
Posted: September 25
This is a very fun and interesting game about space exploration...

PROS:

Can travel to several celstial bodies
Can build your own ship from scratch
Can plant flag on moon

CONS:

Can't play if youre Polish :(
Helpful? Yes No Funny
Your Mother™
467.7 hrs
Posted: September 25
Kerbal Space Program, at least to me is the king of simulation games. While I play numerous others (such as Farming Simulator) they don’t seem to hit every mark in that field. KSP, while challenging at first is the one that throws everything that happens in reality at the player, and force them to deal with it. While a game like Farming Sim only really requires you to keep an eye on fuel or some crops, KSP requires that you maintain a healthy supply of necessities ranging from fuel and electricity, to a satellite connection back home. But the part of the game that truly shines is the feeling you get when you first land on the Mun. A friend who gave the game a shot said
#Discussions_QuoteBlock_Author
“it was just...pride. So many Kerbals died in previous attempts, and I finally made it.”

While the game is difficult, I can’t stop asking people to try it. To me, it’s the perfect “life isn’t about the destination, but the journey” and I think this game captures that perfectly.
Helpful? Yes No Funny
pineporch
40.4 hrs
Posted: September 25
I wasn't smart enough to work for NASA, but at least my incompetence won't hurt anyone in this game.
Helpful? Yes No Funny
Peepster McGraw
135.6 hrs
Posted: September 25
Who knew Mexicans could actually make good games
Helpful? Yes No Funny
Voltar
238.7 hrs
Posted: September 25
Ok, first step... Build rocket, watch it explode.
Second Step: Build rocket again, launch it, then watch it dive bomb into the ground/water/mountain....
Third Step: Build rocket again, launch it, make it to the upper atmosphere and discover you didn't bring enough fuel....
Fourth: Build rocket again, add more fuel, launch, and finally get it into orbit.....
Fifth Step: Pass out from high blood pressure attack from actually getting into orbit and finding out you don't have enough fuel to return to the planet....

Sixth Step: Look at the clock and discover you forgot to go to work, feed the cat, ect.
Seveth Step: Return to step 1.

Bloody love this game! I acutally have more hours than posted, as I play this game on my laptop while on the road, usually at night so that I'm all stressed out.

Now the Cons:

[ ] Steep learning curve, unless you have high understanding of physic's, math, your already an Astronaut.
[ ] An i5 Intel CPU (or AMD equal) or better recommended
[ ] Lots of memory and graphics memory
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
239 of 266 people (90%) found this review helpful
105 people found this review funny
Recommended
249.1 hrs on record
Posted: August 27
Who needs No Man's Sky when you got KSP?
Was this review helpful? Yes No Funny
65 of 69 people (94%) found this review helpful
55 people found this review funny
Recommended
42.8 hrs on record
Posted: September 4
A wise man once said:

"If at first you don't succeed, add more mainsail thrusters."

This man was correct.
This man was me.
Was this review helpful? Yes No Funny
69 of 81 people (85%) found this review helpful
40 people found this review funny
Recommended
478.5 hrs on record
Posted: August 29
Better than No man's Sky - Derp
Better than Space engineers - Hardest call to make
Better than Starbound - Yeah I said it.
Better than Stellaris - was 50/50 but hey, kerbals rule.
Better than Factorio - you get to fly the damn rocket!

Would crash into the Mun for another 470+ hours.
10/10
Was this review helpful? Yes No Funny
40 of 41 people (98%) found this review helpful
32 people found this review funny
Recommended
296.5 hrs on record
Posted: September 1
Top 5 things that taught me orbital mechanics:

5. Apollo 13 (1995, Tom Hanks, Bill Paxton, Kevin Bacon) ~$13 [Amazon.com]

4. Highschool Physics (Newtonian Mechanics) ~Free [Australian Education System]

3. Undergraduate Physics Degree (Keplerian Motion, One body mechanics) ~$8000 /year [UQ]

2. Postgraduate Physics Degree (Analytic two-body solutions, computational Runge-Kutta simulations) ~$10000 [UQ]

1. Kerbal Space Program ~$30
Was this review helpful? Yes No Funny
32 of 36 people (89%) found this review helpful
23 people found this review funny
Recommended
6.3 hrs on record
Posted: September 5
Launched rocket; watched it explode.
Made adjustments and launched rocket; watched it explode.
Made more adjustments and launched rocket; landed it successfully. Watched science explode.

10/10 Michael Bays.

You should definitely buy this game if you like physics and explosions.
Was this review helpful? Yes No Funny
52 of 70 people (74%) found this review helpful
64 people found this review funny
19 of 20 people (95%) found this review helpful
13 people found this review funny
Recommended
297.7 hrs on record
Posted: September 13
Nothing will prepare you for the moment you first touch down on the Mun with your Kerbals - alive. The sense of accomplishment is magnificent.
Its probably comparable to the crushing defeat you feel as you realize you forgot to make sure you had enough fuel to get back home.
But! You've done it! You managed to get your Kerbals to the Mun, land them safely, lift off and get into an aerobrake orbit around Kerbin!
Aaaand, you forgot to put parachutes on your command pod :|
Was this review helpful? Yes No Funny
13 of 14 people (93%) found this review helpful
4 people found this review funny
Recommended
46.6 hrs on record
Posted: August 27
The short and easy scientific observation mission turned into a half day long, nerve-racking rescue expedition. Scott Manley would be proud.
Was this review helpful? Yes No Funny
12 of 14 people (86%) found this review helpful
11 people found this review funny
Recommended
120.3 hrs on record
Posted: August 29
I spent 120 Hours on this game so far, and all i could achieve was crashing on the "Mun" and killing my Crew.
10/10
Was this review helpful? Yes No Funny
8 of 9 people (89%) found this review helpful
3 people found this review funny
Recommended
43.6 hrs on record
Posted: August 28
KSP is a game in which you run a space center, build spacecrafts, launch them and fly them to explore the Kerbin system.

Your space empire could be built on a plethora of crew sacrifice, and it will be tedious process to learn to fligth freely. But nothing could bring you so much sense of achievement than standing on the soil of other celestial objects. Only the most intellectual and hardworking one will be awarded.

The most attracting portion of this game is building mindblowing spacecrafts and flying them in the space. When you play in career mode, you will have to consider whether it could fly your crew members back to Kerbin safely and whether you could afford it. Every spacecraft is a essense of your mind and your knowledge about astronomy, physics, aerodynamics, etc.

10/10 Play this game and kill Jedebiah again!
Was this review helpful? Yes No Funny