Kerbal Space Program 1.5: Dressed for Success is now available.With this update both the base game and the expansion are getting their share of enhancements. With that in mind, a key aspect in this update is the optimization and fresh makeover of various parts, as well the improvement of the burn time indicator!
Recent Reviews:
Overwhelmingly Positive (1,372) - 98% of the 1,372 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (43,442) - 90% of the 43,442 user reviews for this game are positive.
Release Date:
Apr 27, 2015

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Curator Review

By «CaC» May 28, 2016

“Nothing like the feeling of getting a rocket into orbit the first time. Must play!”

Buy Kerbal Space Program

Buy Kerbal Space Program & Making History Bundle

Includes 2 items: Kerbal Space Program, Kerbal Space Program: Making History Expansion


Recent updates View all (50)

December 12

KSP Loading... A closer look into Update 1.6

Welcome to the second edition of our official newsletter, KSP Loading… ! Do you want to learn about all the current developments of KSP? Here’s the place to be, so let's get started!

Update 1.6

Kerbal Space Program 1.6: To Vee or not To Vee is right around the corner, and as with every release the team is very busy wrapping up the final details. As part of our new update delivery plan, To Vee Or Not To Vee is a free update that will be packed with content: Part Revamps, New Features, and more. Here are some of the things we have been busy with for the last few weeks...

Part Catalogue Revamps1

Fuel Tank Adapters

Let’s start with more part revamps. As you have noticed, with this update we took the task of giving some well-deserved attention to several fuel tank adapters that, in all honesty, looked a bit outdated to say the least. Last time we showed you the revamped TVR Stack Couplers, well, this time it is the turn of the O.M.B. Demolition Enterprises TVR-400L Stack Quad-Adapter, which, despite its similarities to a TVR Quad-Coupler, allows for a single 2.5m in diameter rocket to branch into four separate 1.25m stacks. Our artists remade this part’s specular, diffuse and normal texture maps, and created two additional variants to match the different variants found in other Rockomax sized parts.

Click here for high-res images

Revamped Nose Cones

Nose cones have helped your rocket stacks reduce their drag for a long time, but were in need of some well-deserved attention. Our artists gave a facelift to the C7 Aerospace Division’s Small Nose Cone and Goliath National Products’ Protective Rocket Nose Cone Mk7, the Aerodynamic Nose Cone and the Advanced Nose Cones - Type A & B. All these nose cones got brand new diffuse and specular texture maps. Additionally, the colliders of the Protective Rocket Nose Cone Mk7 were revised and, with the exception of the Small Nose Cone, all have new variants to match with your preferred style.

Click here for high res images

The Mk2 Lander Can IVA

Last time we showed you a preview of the revamped Mk2 Lander Can, but there was an aspect of this cockpit we kept under our sleeve: its IVA! Our artists carefully modelled this IVA to match the new dimensions and to give our beloved Kerbals space to perform experiments and store their board games and snacks!

Click here for high-res images

The “Poodle”

Originally based off the Payload Assist Module (PAM), the Rockomax RE-L10 “Poodle” Liquid Fuel Engine is a favorite among players for vacuum operations due to its high specific impulse and thrust. It’s because of this popularity and its outdated look that we decided it needed a makeover, so we turned it into a dual combustion chamber closed cycle engine that will continue to excel at landings, orbital insertions and transfers. As you can see, our artists completely redid the engine’s geometry and created brand new texture maps, giving the “Poodle” a very cool and modern look that matches the engine’s versatility.

Click here to see a high-res image

The “Terrier”

An outstanding engine for orbital maneuvers and landings, the LV-909 "Terrier" Liquid Fuel Engine is also a veteran that received a heavy aesthetic makeover. For this engine the artists completely reworked its geometry and carefully placed some nice details on the engine combustion chamber. Brand new textures maps were also created for the “Terrier” and we are including three variants for you to choose from, including bare and truss mount versions. The new emissive texture (heat map) for the throttle animation of this engine looks pretty awesome, too!

Click here to see the high-res images

New Features

New Idle Animations

To give Kerbals even more personality, we are including several animations for idle Kerbals. These animations will trigger randomly after 10 seconds of inactivity and make taking Kerbal group photos as difficult as on Earth.

Click here to see an animated gif showcasing this feature.

Hiding EVA Helmet

There’s another neat feature included in the upcoming 1.6 update. You will now be able to remove the Kerbals’ Helmets, as well as their neck ring! But be careful, there is a reason why Astronauts wear Helmets for space travel…

Click here to see an animated gif showcasing this feature.

Dynamic Cube Maps

With Update 1.5 we introduced a new shader that made some parts’ metallic bits interact with light. However, the way this shader looked inside the VAB/SPH and outside in the environment differed significantly. With the upcoming 1.6 update we are adding Dynamic Cube Maps to flight mode. These cube map textures are consistently updated to represent a dynamically changing environment, so metallic parts, such as the Probodobodyne Stayputnik will now also reflect the surrounding environment on their surface.

Delta-v per Stage and Delta-v Tool App

This feature is the Crown Jewel of Kerbal Space Program 1.6: To Vee or not To Vee and probably one of the most requested ones. With the upcoming update you’ll be able to visualize the delta-v value along with a range of other technical data for each stage, as well as the overall delta-v of the vessel natively. Additionally, we are including the Delta-v Tool App: A tool that will allow you to set the vessel environment for how delta-v is calculated in the VAB and SPH. Check the video below to learn more!

Click here to see a video explaining this feature!

The Bug Hunt

The team has also been busy with some good ol’ bug sweeping for both the base game and the Making History Expansion. So far, more than 60 items (between bugs and feedback) have been resolved for update 1.6. For instance, some players were having trouble with the dV calculation and handling of stages with multiple engines and asparagus staging in the Burn Time Indicator; now that has been fixed. The team also corrected an issue with drills; now these can only operate and generate ore when deployed with proper surface contact. The Making History Expansion is also getting a good deal of bug squashing. You’ll be happy to hear that a Null-Reference Exception is no longer generated when changing the “Location” settings in the "Spawn Vessel" node with the described procedure in the Mission Builder. Additionally, Kerbals will now appear swimming in the correct position when spawning on bodies of water. We also took this opportunity to do some rebalancing for the Wolfhound, Cheetah, Kodiak, Mastodon, Cub, Skiff and Bobcat LFO engines. Finally, we want to remind you, dear bughunters, that the bugtracker includes a feature you can use to upvote reports and, thus, help us order the issues by user relevance (Upvotes). Click here to learn how to use it.

KSP Enhanced Edition

As we disclosed in the last edition of KSP Loading…, we are currently working on a substantial update for KSP on consoles and it will include various items that the PC version currently has. It is important to note that there always will be differences between the PC and console versions. For instance, if we were to bring Update 1.5 to consoles, we would have to do an entirely new port, something that would take a massive amount of time and resources to achieve and would retract from the overall progress of the game. Instead, we are working on a console-optimized update that will take bits and pieces of all updates we have released after 1.2.1; some of the ones that people like the most. Just to name a couple examples, this next update will include several revamped parts, the variant switcher, and a number of other things that we will be revealing along the way.
We know that console players also want to enjoy new content and we are aiming to provide our players with a content-filled package that not only will solve known issues, but give console players more reasons to continue playing KSP from the comfort of their couches.

Meet the team

We also want to take this opportunity to introduce you to our new Lead Designer, Paul “Maxsimal” Boyle, who has been an avid KSP player since the 1.0 release. Here are some words of his own:

Hi! I've just joined the team very recently, but I've been working on games as a software engineer and designer since 2002. I'm a huge KSP & rocket fan - the realism mods really hooked me. And I'm a general nerd-about-town of the sci-fi/ fantasy/ video game/ boardgame/ tabletop RPG/ wargame/ computer/ physics/ you name it type. I also travel a lot and hang out with my better half and our cats to pretend I'm halfway normal.
I'm really looking forward to helping you explode our favorite little green people in new and exciting ways.

Finally we want to remind you that you can share and download missions on Curse, KerbalX, the KSP Forum and the KSP Steam Workshop.

That’s it for this edition. Be sure to join us on our official forums, and don’t forget to follow us on Twitter and Facebook. Stay tuned for more exciting and upcoming news and development updates!

Happy launchings!
12 comments Read more

November 21

KSP Loading... Our New Dev Diary!

Welcome to the first edition of our official newsletter, KSP Loading… ! Do you want to get the latest news about everything KSP? Then here is the place to be. In KSP Loading… we will share all current developments of KSP intermittently between each update and more, so without further ado, let’s begin!

Update 1.6

As you probably know by now, we are currently working on update 1.6 as part of our plan to deliver quarterly updates. These quarterly updates will keep offering exciting new content that will enhance our players’ game experience, as well as overall improvements to performance and bug fixes. A key aspect of our work in recent months has been in limiting the impact on mods. As many of you have noticed, the majority of mods that worked on 1.4 did so for 1.5 as well. That’s not to say there won’t be any issues with existing mods when there are updates, but we will continue with this effort as we know that mods are an essential part of KSP and of what makes it great.

Part Catalogue Revamps

Fuel Tank Adapters

For the last couple of weeks we have been teasing throughout our social media channels bits and pieces of what we are preparing for update 1.6 and, as you have seen, we are continuing the revamping effort of the part catalogue; focusing particularly on giving life to older parts that aren’t optimized or simply look outdated. One of such parts is the Kerbodyne ADTP-2-3 Adapter. The purpose of this adapter was to accommodate the Rockomax and the Kerbodyne S3 fuel tank series, but it never really matched with the designs of either tank series. With a total remaking of the adapter’s diffuse, normal, and specular texture maps, as well as with the introduction of a brand new variant, this adapter will now seamlessly blend between these two tank series and its variants. We are looking into the possibility of giving the ADTP-2-3 Adapter fuel carrying capabilities as it has been suggested by the community.

Click here for the high-res images

Other adapters that received the good ol’ makeover treatment are all three TVR Stack Couplers. After the introduction of new variants for the the FL-T tank series in update 1.4, these adapters no longer match the tanks they were supposed to fit. Therefore, we needed to revise the TVR series and create brand new diffuse, normal, and specular texture maps for them to combine with all of the different versions of the FL-T tank series.

Click here for the high-res images

Similarly, both the FL-A5 and the FL-A10 Adapters got a well-deserved makeover. Designed for connecting 1.25m parts to 0.625m parts, these adapters got their UV maps optimized and received new diffuse, normal and specular texture maps. Additionally, a new variant that will match with the orange FL-T tank series was included.

Click here for the high-res images

As part of this adapter renovation effort, the team also gave both the Rockomax Brand Adapters a well-deserved face-lift. Both parts got their UV maps optimize, brand new texture maps and a new variant to combine with the orange FL-T tank series. The geometry of the large Rockomax Brand Adapter was also updated to give it a smoother shape.

Click here to see more and high-res images

The new Spark

The team also gave the iconic 48-7S “Spark” Liquid Fuel Engine a full-fledged aesthetic makeover. We wanted to enhance this engine’s versatile nature by including 3 very different variants that will also increase the customizability of your creations. The geometry was completely redone and the detail of the tubing of the engine was carefully crafted. New textures were also created for this part and a new emissive texture for the throttle animation was added.

Click here to see the high-res images

The Mk2 Lander Can

We also took the opportunity to give Sean’s Cannery Mk2 Lander Can a brand new face-lift. We wanted this command module to be more in-line with comparable parts, so we reduced its mass and added a second top hatch. In an attempt to broaden the creation possibilities with this part we also added a third attach node to the back of the module and included a slimmed down ‘butter stick’ variant ideal for manned rovers. The default variant, on the other hand, will have a pair of built in service bays. The IVA view of this command module is also being worked on to match with its new look.

Click here for the high-res images

New Features

Activate Navigation to a Launch Site

Visual enhancements aren’t the only thing that have been on our agenda. In fact, there is a quality of life feature coming to update 1.6 that will help any stray pilots find their way back to any Launch Site or Runway. From the Map View players will now be able to activate the navigation system towards the KSC, the Woomerang Launch Site, the Island Runway, Dessert Launch Site or any mobile Launch Site set by a mission creator. Activate Navigation to a Launch Site will target the chosen location and add a navigation mark in the NavBall.

Click here to see an animated gif showcasing this feature.

The Bug Hunt

Additionally, we have spent some time in the bugtracker identifying bugs that needed to be mercilessly squashed. For starters, in order to have more consistency between modes, the team made an adjustment to the SAS functionality on probes in Sandbox and Science game modes. Some of these probes had full SAS functionality in these modes, even though their description said otherwise, and these adjustments correct this. However, the SAS functionality on probes will be togglable from the game settings, with the old behavior being the default setting. The dV calculator in the burn time indicator included in update 1.5 had some bugs, and the team went straight ahead to figure out what the problems actually were, and of course fixed them. This included fixing the handling of docking ports and multiple nuclear or ion engines within the new Burn Indicator functionality. The flashing of the Burn Indicator and the display of dV before the launch of a vessel was also a problem that we fixed in the past weeks. Moreover, the Vernor Engines now use Liquid Fuel and Oxidizer correctly on the Engineering report, and we also fixed an issue that drained the fuel from tanks when the fuel availability icon was double-clicked. These are only a few examples.

KSP Enhanced Edition

In other news, we want to let console players know that KSP Enhanced Edition is getting a substantial update that among other things includes many improvements and an update to Unity 2017, which will improve performance. We will be sharing the process with you and revealing the content of this update in the upcoming months.

A new Website is coming!

We are also working hard on giving our website a new, sleeker look. Soon, you’ll be able to see the results for yourself; we are eager to see what you think.

Meet the team

We also want to take this opportunity to introduce you to our new Lead Artist, Rafael “Stylushead” Gonzalez. You have already seen his work these past weeks, including the new Key Art, the Halloween images and many things included in update 1.5. Here are a few words from him:

I was born and raised in Mexico City. I worked in the animated movies industry for nine years, most of that time as an art director, supervising from concept art to final product, illustration is my expertise, always mixing different techniques from 2D and 3D and sometimes traditional.
I love video games and movies and everything involved in their development. Also I work from time to time in webcomics as a colorist. I joined the Kerbal team as lead artist during the KSP 1.5 release and since then I have been producing, learning and enjoying a lot!

Ghouls in Jool Halloween Challenge - The best short stories!

Even though Halloween is behind us, we want to share with all of you some of the best short stories we were delighted to receive in the Ghouls in Jool Halloween Challenge. The challenge consisted of submitting spooky short stories based in the Kerbal universe and...oh boy… did we get some chills… Unfortunately, we couldn’t fit all stories here, but if you’re in the mood to read what our fantastic community came up with, click here.

Here are what we thought were the top three stories. Enjoy!

1.- “The Heart of Jool” by Ultimate Steve
Deeper and deeper, away from everything I have ever known.
Falling through the flashes of lighting. Will I be struck, or crushed?
Kerbin. So far away now. I am the first witness of Alien Thunder.
Will I be the last? The only? And how long until I meet death?

I can feel it everywhere. Jool, pulling me closer still.
The helmet creaks. The others would never hear.
The ones who died along the way - The helmetless pilot.
The crushed engineer. The scientist locked outside.

And the world drew Golem Thirteen to its ultimate fate.
Noises, growing louder ever still. But always, nothing
But the menacing fog around the Heart of Jool. Until a voice,
Menacing, kind, Evil and holy, speaks out from the void above.

No - it couldn't be! The ancient legend was true! Have I met Evil?
Tell me, child, what do you know of me, the Deep Space Kraken?
The devourer of ships, destroyer of worlds, the embodiment of Death.
Yours truly - but have none considered a force stronger than I?

Long ago I destroyed ships, devoured worlds, killed mercilessly.
My helmet gives way, great Kraken! In moments I shall meet Death!
I met Death long ago, banished by the Universe to the Heart of Jool.
And tell me, great Kraken of Deep Space, what do you mean by this?

With power comes destruction. At the top I ruled dust.
I fell. From everything, wishing I could go back to mend it.
Wishing the dust would absolve my crimes. In you I see me.

And unlike me, I can save you.

The visor gave way to the intense aether, crushing instantly.
The last I would see, before my final toxic breath, would be
The haunting yet noble face of the Kraken of Deep Space
Against the backdrop of the cruel, unrelenting Heart of Jool.

T Minus Five. The launch pad. But how? The crew, all still alive.
Golem Thirteen would stay on the ground. And then was a sound.
Indeed, it was The Kraken of Deep Space. Gone in a blink, he said
Goodbye and nothing more, with a smile that shook me to the core.

But I am now certain I will remember that great regretful ghoul.
The one who saved me from the void in the Heart of Jool.

2.- “Clank” by Blasty McBlastblast
Startled, research forgotten, the two scientists looked up. They had both definitely heard it this time. This time it was undeniable.
“Okay, maybe you weren’t dreaming earlier” apologised Jedfen, but neither of them seemed pleased by this prospect.
Jedfen and Hencott were familiar with all the regular noises of Outpost V., but this noise was not one of them. They knew the steady whirring of the solar arrays as they tracked the sun, the hum-thud of antennae realigning, and the wet slap of sloshing fuel. Clanking was something new, and it was coming from outside!

The two locked eyes, panic growing at the realisation they were not alone. Something was knocking against the outside of their laboratory!
“Should we call mission control?” suggested Hencott
“We can’t” replied Jedfen, wondering if Hencott’s stupidity might be higher than indicated, “Did you forget that it’s night here for two more days? We need to be facing sunward to get a signal to Kerbin”
“Maybe the supply ship came back?” Hencott proposed weakly, but that ship had launched weeks ago, the kerbonauts were alone.

“WE HAVE TO STAY CALM!!” shrieked Jedfen, momentarily losing his cool “What would Jeb do?”
“We need more information” said Hencott, taking deep breaths, “We need to know what is making the noise, one of us will have to go outside…”
Silently both Kerbals stood to face each other, and proceeded to play rock-paper-scissors…

“That noise came from near the north window” Jedfen said into the handheld radio.
“Copy. Approaching now. I think I see someth…” but the staticky reply was cut short by a yelp! Then laughter! Then ominous silence…
Minutes passed, but the radio only hissed. Amidst rising dread Jedfen moved to the suit rack, compelled to go help, but he was too late! The airlock began to cycle, something was coming in! Armed with a jumbo-sized snack bar Jedfen prepared himself to defend the outpost.
Through dramatic billowing gasses Jedfen saw him step from the airlock, grinning, and holding something that was attempting to wriggle free. Looking closer, he saw cradled firmly in Hencott’s arms an adorable tiny rover!
“Where did that come from?!” he asked, tension dissolving into curiosity.
“Some earlier mission?” laughed Hencott, “I think it was trying to charge power by the window light! Can we keep it?”
“Control can’t say no if they can’t contact us!”

3.- “Fright Night at KSC” by StrandedonEarth
Every year during the three hundred and thirty-third night, mysterious things start to happen at the KSC. None of the KSC staff want to stay that night, as weird noises abound around the Center. The only exception is Mortimer Kerman, who gleefully volunteers to be the caretaker for that night, from his usual haunt in the Admin building. In the deserted Astronaut Complex, ghostly footsteps and flushing toilets are heard. The great radio dishes of the Tracking Station creak and squeal as they turn, but only during that night. Pale apparitions are seen streaking down the runway, rising briefly before vanishing below the waves, while the big display screens at Mission Control fill with static. Even though the VAB is shut down for that night, the cranes and other machinery start moving with nobody at the controls. Fire and smoke bloom on and around the empty launch pad as a muted roar is heard, and hundreds of tiny glowing krakens scurry around the Research and Development center. A steady tap-tap-tapping punctuated with whirring fills the Spaceplane Hangar, without a soul in sight. They call it "Sotreum ed Aid"

When day finally breaks on that seemingly endless night, everything grows quiet again, and Mortimer starts to look sad. The tiny glowing kraken all vanish without a trace. But when the brave kerbonauts start arriving at the Astronaut Complex, they are shocked to find all the kerbals that had been KIA during the last four hundred days sitting around, drinking koffee...

Honorable mentions:Eyes in the deep” by Joshua Stubbles, “A few KSP super-short stories that are guaranteed to make grown kerbals hide under their beds and cry for mommy” by Swjr-swis, “Untitled” by KSK, and “Untitled” by qzgy.

Finally we want to remind you that you can share and download missions on Curse, KerbalX, the KSP Forum and the KSP Steam Workshop.

That’s it for this edition. Be sure to join us on our official forums, and don’t forget to follow us on Twitter and Facebook. Stay tuned for more exciting and upcoming news and development updates!

Happy launchings!
74 comments Read more

About This Game

In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics. Launch your Kerbal crew into orbit and beyond (while keeping them alive) to explore moons and planets in the Kerbol solar system, constructing bases and space stations to expand the reach of your expedition.

Kerbal Space Program features three gameplay modes. In Science Mode, perform space experiments to unlock new technology and advance the knowledge of Kerbalkind. In Career Mode, oversee every aspect of the space program, including construction, strategy, funding, upgrades, and more. In Sandbox, you are free to build any spacecraft you can think of, with all parts and technology in the game.

Key Features

  • Build spaceships, rockets, and vehicles using any imaginable combination of parts, each with their own function that will affect the way your spacecraft behaves.
  • Take full control over your ship’s setup to execute complex flight maneuvers.
  • Manage your Kerbal crewmembers, including hiring, training, and sending them into space to become heroes.
  • Discover a whole star system with unique moons and planets, exploring detailed terrain at a vast scale.
  • Send your Kerbal crew outside their ships for “extra-vehicular” activities.
  • Dock spacecraft together to construct space stations, massive starships, and surface bases on new planets.
  • Use satellites to scan terrain and find biomes and other anomalies.
  • Set up communications networks to communicate between your spacecraft and Kerbal Space Center.
  • Research and develop new technologies to extract valuable information and resources from all over the solar system, and much more!

Try out the many mods created by the Kerbal Space Program community!

System Requirements

Mac OS X
SteamOS + Linux
    • OS:Windows 7 64-bit
    • Processor:Core 2 Duo
    • Memory:4 GB RAM
    • Graphics:DX10 (SM 4.0) capable, 512MB VRAM
    • Hard Drive:3 GB HD space
    • OS:Windows 10 64 bit
    • Processor:Core i5
    • Memory:8 GB RAM
    • Graphics:DX10 (SM 4.0) capable, 1GB VRAM
    • Hard Drive:4 GB HD space
    • OS:macOS Mavericks (10.9) 64-bit
    • Processor:Intel
    • Memory:4 GB RAM
    • Graphics:SM 4.0 512MB VRAM
    • Hard Drive:3 GB HD space
    • OS: macOS Sierra (10.12)
    • Processor:Intel Core i5
    • Memory:8 GB RAM
    • Graphics:SM 4.0 1GB VRAM
    • Hard Drive:4 GB HD space
    • OS: Ubuntu 14.04 LTS 64-bit
    • Processor: Core 2 Duo
    • Memory: 4 GB RAM
    • Graphics: SM 4.0 512MB VRAM
    • Hard Disk Space: 3 GB HD space
    • OS: Ubuntu 16.04 LTS
    • Processor: Core i5
    • Memory: 8 GB RAM
    • Graphics: SM 4.0 1GB VRAM
    • Hard Drive: 4 GB HD space

What Curators Say

1,420 Curators have reviewed this product. Click here to see them.
Customer reviews
High Volume of Reviews Detected:
Exclude  or  View Only
Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Display As:
Review Beta NEW!
When enabled, will sort reviews by new Helpfulness score. Read more about it in the blog post.
Show graph
Hide graph
Review Helpfulness Beta Enabled
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...