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Kerbal Space Program

A perfect blend of science and slapstick, and a robust and compelling sandbox of possibility. Simply outstanding.
Kerbal Space Program Game Cover
89%Game Brain Score
gameplay, story
stability, grinding
95% User Score Based on 89,744 reviews
Critic Score 82%Based on 8 reviews

Platforms

Nintendo SwitchPlaystation 5Playstation 4Xbox Cloud GamingXboxWindowsPlayStationLinuxXbox Series X|SPCWii UXbox Game PassCloudMac OSXbox OneNVIDIA GeForce NOW
Kerbal Space Program Game Cover

About

Kerbal Space Program is a single player open world strategy game with a science fiction theme. It was developed by Squad and was released on January 16, 2018. It received positive reviews from critics and overwhelmingly positive reviews from players.

Kerbal Space Program is a physics-based space simulation game where players build and fly their own space vehicles. Launch satellites, build space stations, and explore other planets in a detailed and realistic space flight environment. With a variety of parts and tools, the possibilities for space exploration are endless.

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95%
Audience ScoreBased on 89,744 reviews
gameplay1.3k positive mentions
stability563 negative mentions

  • Kerbal Space Program offers an engaging and educational gameplay experience, effectively teaching players about orbital mechanics and rocketry in a fun, sandbox-style environment.
  • The game features a charming atmosphere and humor, making even failures enjoyable, while the extensive modding community enhances replayability and customization.
  • Players often express a profound emotional connection to the game, celebrating the sense of achievement and joy that comes from successfully completing complex missions.
  • The game has a steep learning curve and a complicated interface, which can be frustrating for newcomers, often requiring external tutorials to understand basic gameplay mechanics.
  • Many players criticize the game's stability, reporting bugs and glitches that disrupt gameplay, particularly during complex tasks like building rockets or executing missions.
  • The career mode can feel grindy and repetitive, with some players expressing frustration over the monotony of completing tasks to progress.
  • gameplay
    5,106 mentions Positive Neutral Negative

    The gameplay of Kerbal Space Program (KSP) is widely praised for its engaging and educational nature, effectively teaching players the fundamentals of orbital mechanics and rocketry through a fun, sandbox-style experience. While the game features a steep learning curve, especially for newcomers unfamiliar with space science, it rewards persistence with a deep understanding of complex concepts like delta-v, gravity assists, and spacecraft design. The extensive modding community further enhances gameplay, offering endless possibilities for customization and exploration, making KSP a beloved title among both casual gamers and space enthusiasts.

    • “Kerbal Space Program is a fantastic game that will teach you the basics of physics and orbital mechanics in a fun, simplified way.”
    • “This game is amazing for learning about engineering and orbital mechanics, and it is still fun after hundreds of hours.”
    • “You will learn real orbital mechanics while laughing at your own explosions.”
    • “Worst game I've ever played. Spent hours dying over and over again; the UI is impossible to figure out. Get ready to look up a tutorial if you want to do the most basic gameplay.”
    • “Gameplay is very complicated for those who haven't experienced this type of game before.”
    • “The interface is dense, the tutorials are limited, and the mechanics are often unforgiving.”
  • story
    4,255 mentions Positive Neutral Negative

    The "story" aspect of Kerbal Space Program (KSP) is largely player-driven, with minimal narrative structure provided by the game itself. Players engage in a variety of missions, primarily through career mode, where they manage a space program, complete contracts, and unlock new technologies, but the missions often feel repetitive and lack depth. While the game encourages creativity and experimentation, many players express a desire for a more cohesive storyline or structured progression, as the current mission system is seen as somewhat artificial and procedural. Overall, KSP excels in allowing players to create their own stories through the challenges and triumphs of space exploration, but it does not offer a traditional narrative experience.

    • “Every mission embarked upon—each triumphant landing or catastrophic miscalculation—becomes a story, a lesson, a memory.”
    • “The satisfaction of successfully landing on another planet after carefully planning and executing a mission is unmatched in gaming.”
    • “The feeling of successfully completing a long and complex mission into the emptiness of space is more euphoric than injecting 50cc's of marijuanas.”
    • “Be warned, this game is very much a 'story generator.' What I mean by that is, the game offers very little narrative direction or depth, so it'll be on you to invent the stories that take place on your missions and between your kerbals.”
    • “It seems like all the effort went into the rocket building, and not enough into exploration missions or base building.”
    • “The missions are sometimes game-generated—save Bobkin Kerman from low Kerbin orbit—or a personal challenge, such as building a massive re-usable interplanetary craft and landing vehicle and sending it on a mission to every moon around Jool.”
  • humor
    1,779 mentions Positive Neutral Negative

    The humor in "Kerbal Space Program" is a standout feature, characterized by the charmingly clumsy kerbals and their often catastrophic misadventures in space. Players frequently find themselves laughing at the absurdity of their rocket failures, with the game cleverly blending educational elements of physics with slapstick comedy. The quirky animations and humorous descriptions of parts add to the lighthearted atmosphere, making even the most frustrating moments enjoyable.

    • “Learning how to build rockets and reach other planets feels great, and even the failures are fun thanks to the kerbals’ humor.”
    • “The charm of the kerbals, the humor, and the sheer joy of exploration all come together to make something timeless.”
    • “You’ll learn real orbital mechanics while laughing at your own explosions.”
    • “The animations I did see were mostly tiny and not funny.”
    • “Maybe not for those who appreciate humor.”
    • “I have put so many hours into this game; it's not funny.”
  • graphics
    1,680 mentions Positive Neutral Negative

    The graphics of Kerbal Space Program (KSP) have received mixed reviews from players. While many appreciate the game's charming, cartoonish aesthetic and find it visually appealing, others criticize the graphics as outdated and lacking detail, particularly on planetary surfaces. However, a strong modding community offers numerous graphical enhancements that can significantly improve the visual experience, making the game more visually stunning and modern. Overall, while the base graphics may not impress everyone, the gameplay and modding potential compensate for these shortcomings.

    • “Seriously, go check out the mods for this game before playing - there are a lot of very awesome graphical mods that make this game shine.”
    • “The graphics are certainly dated but they have a charm to it (though there are visual mods).”
    • “The graphics, whilst not the most ultra-realistic, are simply beautiful; the character & styling is remarkable and I've caught myself just sitting in orbit of some planets watching eclipses and 'sun' rises.”
    • “The graphics are not good at all.”
    • “It's not polished, it's occasionally buggy, it's an absolute mess, it also looks hideously dated, even with lots of graphical user-mods, it's just plain bad in so many ways.”
    • “The graphics are pretty dated, but there's mods to fix that.”
  • atmosphere
    956 mentions Positive Neutral Negative

    The atmosphere in Kerbal Space Program is described as both beautiful and challenging, providing a realistic simulation of atmospheric flight and physics that can lead to spectacular failures and successes. Players often find themselves immersed in the intricacies of rocket design and flight dynamics, with many hours spent experimenting within the atmosphere before even attempting to reach space. The game's humor, combined with its educational aspects, creates a captivating environment where players can enjoy the thrill of launching rockets, navigating atmospheric challenges, and experiencing the consequences of their engineering decisions.

    • “Beautiful atmosphere, wonderful, sometimes horrifying, and mostly very realistic physics.”
    • “The atmosphere simulation for airplanes is decent but do not expect Microsoft Flight Simulator.”
    • “The game is all about your rockets going boom, or stranded in the middle of nowhere, or burning on atmosphere reentry, or experiencing unexpected decomposition, or meeting deep space krakens, or occasionally succeeding in its mission and bringing kerbonauts home alive (at least some of them).”
    • “It just isn't fun building a ship, just to realize it's either missing tons of delta v, burns up in atmosphere due to tumbling or other krakeny bugs 4 hours into its flight, resulting in multiple unrecoverable deaths.”
    • “I can't express the tremendous guilt I have due to all the kerbals I've left stranded in LKO or burned up in the atmosphere because I messed up the staging.”
    • “The game is hard to learn, the learning curve is steep because although the build system is seemingly simple and the planets are small enough to be friendly (smaller atmospheres, slower orbital speeds), the aerodynamic model is incredibly intricate and the physics engine scarcely pulls its punches.”
  • stability
    594 mentions Positive Neutral Negative

    The stability of the game is frequently criticized, with many users reporting a variety of bugs and glitches that can disrupt gameplay, particularly during complex tasks like building rockets or executing missions. While some players find the glitches amusing and part of the game's charm, others describe the experience as frustrating and unpolished, with issues ranging from minor graphical glitches to significant game-breaking bugs. Overall, despite its stability issues, the game remains popular among fans for its engaging mechanics and modding community, which can help mitigate some of the problems.

    • “The game has pretty bad graphics; however, it makes up for it with no glitches or lag.”
    • “This game is very enjoyable, functions great, no glitches, and surprisingly educational.”
    • “It may be early access at the moment, and new things are being added, but in its current form, it's pretty much bug free and plays flawlessly.”
    • “It's not polished, it's occasionally buggy, it's an absolute mess, it also looks hideously dated, even with lots of graphical user-mods, it's just plain bad in so many ways.”
    • “It may sometimes be a buggy, unplayable mess.”
    • “The game is just a buggy, unfinished mess.”
  • replayability
    444 mentions Positive Neutral Negative

    The game boasts exceptional replayability, often described as "endless" or "infinite," largely due to its extensive modding community and the creative freedom it offers players. Users highlight that even without mods, the game provides significant replay value through various gameplay modes and challenges, ensuring that players can continually find new experiences and challenges. Overall, the combination of a rich sandbox environment and ongoing community support makes it one of the most replayable games available.

    • “Even as I write this in June 2025, after the game has been out for over 10 years, this game continues to be something I always return to, with near infinite replayability.”
    • “Not only will it teach you about orbital mechanics, but it is one of the most replayable games with a huge modding community always adding new things to try and new challenges to complete.”
    • “The amazing community and the mods they create make it infinitely replayable.”
    • “Despite its age, KSP continues to feel fresh, thanks to its depth and replayability.”
    • “The replayability of the game is also almost limitless.”
    • “This game will consume your waking hours and, if you ever manage to get free of its gravitational pull and play something else, its replayability and scope is such that its siren song will always be there to pull you back in months or even years later.”
  • optimization
    387 mentions Positive Neutral Negative

    The optimization of the game has received mixed feedback from users. While some players report smooth performance on lower-end systems and commend the game's ability to run well with minimal issues, many others highlight significant performance problems, particularly with larger crafts or when using extensive mods. Overall, the game shows potential for improvement, but it currently suffers from bugs and optimization challenges that can detract from the experience, especially for those with less powerful hardware.

    • “Performance and frame rate is very good as well.”
    • “Not laggy at all and zero performance issues.”
    • “With mods, the graphics of this game can be improved to almost KSP2 level; if the devs did update this game, I would ask for better optimization so that the mods run better. It has a lot of potential and has already taken a stake in the genre, worth the buy in my book.”
    • “As expected given the nature of the sequel's release, it was also (and continues to be) filled with countless bugs and performance issues.”
    • “The performance is atrocious; add any graphical mods and you'll need fat stacks to keep the 5% lows above 80.”
    • “The biggest problem with the game is the poor optimization of certain aspects like time warps and the high quantity of objects in space.”
  • grinding
    355 mentions Positive Neutral Negative

    The grinding aspect of the game is frequently described as tedious and time-consuming, particularly in career mode where players must complete repetitive tasks to progress. While some find the grind rewarding and a necessary part of the learning experience, many express frustration with the monotony and the need for extensive time investment to achieve goals. Overall, the game offers a mix of fun and frustration, with players often recommending the sandbox mode as a less grind-heavy alternative.

    • “It's not tedious though, it's actually fun.”
    • “Unlike some other games with a lot of hours behind them, this one isn't grindy; this is 600+ hours of me figuring stuff out and enjoying the learning process.”
    • “Fun, something many new games lack; no tedious grind. Yes, the distances between worlds are huge, but with the time warp function, hours can pass in minutes or seconds.”
    • “The game can be grindy but is never stale, as there is always something to learn and do.”
    • “Repetitive tasks: grinding resources and completing contracts can feel monotonous after a while.”
    • “The career mode feels a bit grindy and boring; science mode is my preferred mode, as you don't instantly have like a million parts at your disposal, which is what sandbox feels like.”
  • music
    287 mentions Positive Neutral Negative

    The music in the game is widely praised for its calming and atmospheric qualities, effectively enhancing the sense of exploration and achievement during gameplay. While many players appreciate the iconic and hopeful soundtrack, some note that it can become repetitive over extended play sessions, leading to a desire for more variety. Overall, the soundtrack, primarily composed of royalty-free tracks, complements the game's whimsical and lighthearted tone, though some players prefer to mute it and listen to their own music instead.

    • “And then there’s the music — that iconic, hopeful soundtrack that captures the feeling of discovery perfectly.”
    • “It’s calm and inspiring all at once, the kind of music that makes even your smallest milestones feel epic.”
    • “They never bothered to secure an actual soundtrack, so the whole game sounds like an online psychology class module (lots of free and free-sounding music), easily fixed by mods of course but still annoying.”
    • “The music can get repetitive at times, especially if you spend a lot of time building rockets.”
    • “The music is calming, but it, too, will start to grate on you as you hear the same song yet again.”
  • emotional
    156 mentions Positive Neutral Negative

    Players frequently express a profound emotional connection to the game, often describing experiences that range from joy and pride to heartbreak and frustration. The adorable kerbals evoke strong feelings of attachment, leading to tears during moments of success and failure, such as landing on the moon or losing a spacecraft. Overall, the game is celebrated for its ability to elicit a wide spectrum of emotions, making players feel accomplished, nostalgic, and deeply invested in their space exploration journeys.

    • “The emotional and mental payout of this game can't be described in words.”
    • “Landing on the Mun (and making it back) for the first time is – I don't know how else to put it – a goddamn visceral experience that made me feel things I didn't know this old cynic was still capable of feeling.”
    • “Nothing beats the sense of achievement at seeing a spacecraft you built touching down on another planet, moon, or asteroid.”
  • monetization
    132 mentions Positive Neutral Negative

    The monetization aspect of the game has drawn significant criticism, with many users expressing frustration over the introduction of a launcher that serves ads and collects personal data, which they perceive as a cash grab by the new publisher, Take-Two Interactive. While some players appreciate the absence of microtransactions in the original game, concerns about future DLCs and monetization strategies have led to fears that the game's integrity may be compromised. Overall, the community is divided, with a strong sentiment against invasive advertising practices and a distrust of the direction the game may take under corporate ownership.

    • “A rare great game, no microtransactions.”
    • “It's fun, difficult, void of in-game purchase popups or overlays, and you might even learn a little.”
    • “This game is in early access admittedly, this may put some of you off, but do not let it be so, this game is as polished and tidy as most AAA releases these days; there are no microtransactions here, you are buying practically a finished game.”
    • “Sad that the second game was nothing but a cash grab, but #1 is still great to play!”
    • “The game is good, but it's not worth giving your money to the heartless corporate stooges who are trying to sell merch after the full-price, early-access sequel was cancelled (and left on the Steam store to rot away in its unfinished state). This whole IP is turned into a cash grab and the original creators probably aren't getting a penny.”
    • “I used to like this game a lot and loved where it was going; sadly, the new owners of the publisher company have turned it into a cash grab.”
  • character development
    5 mentions Positive Neutral Negative

    Character development in this game is largely absent, with many reviewers noting a lack of story or progression for the characters. However, the character design is often highlighted as amusing and visually appealing, contributing to the overall enjoyment of the gameplay despite the minimal narrative depth.

    • “Real physics, great character design, and a clever progression system make this a true game for the ages.”
    • “Never has a game with no story, character development, or even plot been this fun.”
    • “No character development.”
    • “Character design is... umm... not important in this genre, but I can't stop seeing minions.”
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205h Median play time
380h Average play time
115h Main story
602h Completionist
45-600h Spent by most gamers
*Based on 591 analyzed playthroughs
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Frequently Asked Questions

Kerbal Space Program is a open world strategy game with science fiction theme.

Kerbal Space Program is available on Nintendo Switch, PlayStation 5, PlayStation 4, Windows and others.

The main story can be completed in around 115 hours, while the entire game is estimated to take about 602 hours to finish. On average players spend around 380 hours playing Kerbal Space Program.

Kerbal Space Program was released on January 16, 2018.

Kerbal Space Program was developed by Squad.

Kerbal Space Program has received positive reviews from players and positive reviews from critics. Most players liked this game for its gameplay but disliked it for its stability.

Kerbal Space Program is a single player game.

Similar games include Cities: Skylines, Universe Sandbox, Space Engineers, Stormworks: Build and Rescue, Spaceflight Simulator and others.