Compare Kerbal Space Program prices across trusted key stores and find the best deal. Developed by Squad. Published by Private Division. Released on 4/27/2015. Available on PC, Mac, Linux, Xbox. Genres: Indie, Simulation. Metacritic score: 88/100.

Rocket science has never been this entertaining or this humbling: KSP hands you a physics engine and a parts bin and trusts you to figure out why your spacecraft is corkscrewing into the ocean.

I've sunk more hours into Kerbal Space Program than I care to admit, and the honest-to-Kerbin truth is that the first time your rocket clears the atmosphere and you nail a stable orbit, you feel like you actually understand something real. That sensation is not a trick. The orbital mechanics here are grounded in actual physics - Hohmann transfers, delta-v budgets, specific impulse - and the game teaches them through failure rather than lecture. You will blow up dozens of spacecraft on the launchpad. That is the tutorial. The three modes give you a sensible on-ramp regardless of your experience level. Sandbox drops you into the Vehicle Assembly Building with every part unlocked and zero budget constraints - pure experimentation. Science Mode layers in a tech tree that asks you to run experiments and collect data in orbit or on the surface of the Mun before you can unlock more advanced components, giving structured players a satisfying progression loop without the financial pressure. Career Mode is the full package: you manage contracts, track funding, upgrade the Kerbal Space Centre's facilities, and weigh risk versus reward every time you schedule a crewed mission. That last mode has the depth a strategy player wants - you're constantly making decisions about efficiency, mission sequencing, and resource allocation that would not feel out of place in a proper management sim. The elephant in the Vehicle Assembly Building is the learning curve, but here is the case for ignoring that warning. The in-game tutorials do a reasonable job covering ascent profiles, orbit mechanics, and manoeuvre nodes. The real power, though, is the community. The Steam Workshop and the CKAN mod manager together give you access to hundreds of mods - Kerbal Engineer Redux surfaces the delta-v and thrust-to-weight numbers you need while building, Kerbal Alarm Clock stops you missing critical burn windows when you have six active missions, MechJeb handles repetitive orbital tasks once you've already learned to do them manually. Visual overhauls like EVE and Parallax turn the stock planets into something genuinely striking. The modding infrastructure is mature, well-documented, and frankly one of the best in the simulation genre. Where the game shows its age is in performance and polish. Large part-count vessels can hammer frame rates, the stock UI feels dated compared to modern sims, and the in-house AI for mission target accuracy is non-existent - there are no enemies, no opposing space programs, no diplomatic friction. Career Mode's contract system can feel repetitive once you're past the mid-game. These are real complaints, and players who need a tightly authored experience will bounce off KSP hard. It rewards the kind of person who treats a failed Mun landing as a design problem to solve rather than a frustrating setback. Patience is not optional. For strategy and sim players specifically, this is one of the rare sandboxes where the depth of decision-making scales across hundreds of hours. Getting your first Kerbal to orbit is one game; assembling a refuelling station around Minmus, planning a gravity-assist trajectory to Jool, and then landing on all five of its moons in sequence is another game entirely - and both live inside the same install. The 88 Metacritic and 95% positive Steam rating are accurate reflections of what you get when you commit to it. Diego, Scout Team

Kerbal Space Program

Kerbal Space Program

Apr 27, 2015SquadPrivate Division
GamerScout Says

Rocket science has never been this entertaining or this humbling: KSP hands you a physics engine and a parts bin and trusts you to figure out why your spacecraft is corkscrewing into the ocean.

PCMacLinuxXbox
Steam Deck PlayableProtonDB Platinum
Best Price Available
€5.16-86%
at Eneba
Lowest tracked: €4.98
Track this price

GamerScout Verdict

8.8/10

Best for sim and strategy players who want a physics-grounded sandbox that grows with them across hundreds of hours.

Compare Prices(7 stores)

EnebaBest price
StandardGlobalSteam KeyKey
€5.16-86%
Priced in EUR by the store
Buy
StandardGlobalSteam KeyKey
€5.17
Priced in EUR by the store
Buy
StandardEurope (EU)Steam KeyKey
€5.20-86%
Priced in EUR by the store
Buy
StandardEurope (EU)Steam KeyKey
€5.26
Priced in EUR by the store
Buy
StandardUnited StatesSteam KeyKey
€5.48
Priced in EUR by the store
Buy
StandardLatin AmericaSteam KeyKey
€5.48-85%
Priced in EUR by the store
Buy
StandardGlobalGOG KeyKey
€6.99
Priced in EUR by the store
Buy

Every store in this table quotes us in euros, so the EUR figure is the price the seller actually set, not our arithmetic — which is why EUR is also the currency we rank in. We only list an offer here when the store gives us its price in euros, so nothing in this table is a number we invented.

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Price History

Lowest tracked
€4.9815 Aug 2026
Current best
€5.16
Keyshops
€4.66€5.77€6.88€7.995 Jun24 Jun12 Jul31 Jul18 Aug
5 Jun — 18 Aug
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Screenshots & Media

About Kerbal Space Program

I've sunk more hours into Kerbal Space Program than I care to admit, and the honest-to-Kerbin truth is that the first time your rocket clears the atmosphere and you nail a stable orbit, you feel like you actually understand something real. That sensation is not a trick. The orbital mechanics here are grounded in actual physics - Hohmann transfers, delta-v budgets, specific impulse - and the game teaches them through failure rather than lecture. You will blow up dozens of spacecraft on the launchpad. That is the tutorial. The three modes give you a sensible on-ramp regardless of your experience level. Sandbox drops you into the Vehicle Assembly Building with every part unlocked and zero budget constraints - pure experimentation. Science Mode layers in a tech tree that asks you to run experiments and collect data in orbit or on the surface of the Mun before you can unlock more advanced components, giving structured players a satisfying progression loop without the financial pressure. Career Mode is the full package: you manage contracts, track funding, upgrade the Kerbal Space Centre's facilities, and weigh risk versus reward every time you schedule a crewed mission. That last mode has the depth a strategy player wants - you're constantly making decisions about efficiency, mission sequencing, and resource allocation that would not feel out of place in a proper management sim. The elephant in the Vehicle Assembly Building is the learning curve, but here is the case for ignoring that warning. The in-game tutorials do a reasonable job covering ascent profiles, orbit mechanics, and manoeuvre nodes. The real power, though, is the community. The Steam Workshop and the CKAN mod manager together give you access to hundreds of mods - Kerbal Engineer Redux surfaces the delta-v and thrust-to-weight numbers you need while building, Kerbal Alarm Clock stops you missing critical burn windows when you have six active missions, MechJeb handles repetitive orbital tasks once you've already learned to do them manually. Visual overhauls like EVE and Parallax turn the stock planets into something genuinely striking. The modding infrastructure is mature, well-documented, and frankly one of the best in the simulation genre. Where the game shows its age is in performance and polish. Large part-count vessels can hammer frame rates, the stock UI feels dated compared to modern sims, and the in-house AI for mission target accuracy is non-existent - there are no enemies, no opposing space programs, no diplomatic friction. Career Mode's contract system can feel repetitive once you're past the mid-game. These are real complaints, and players who need a tightly authored experience will bounce off KSP hard. It rewards the kind of person who treats a failed Mun landing as a design problem to solve rather than a frustrating setback. Patience is not optional. For strategy and sim players specifically, this is one of the rare sandboxes where the depth of decision-making scales across hundreds of hours. Getting your first Kerbal to orbit is one game; assembling a refuelling station around Minmus, planning a gravity-assist trajectory to Jool, and then landing on all five of its moons in sequence is another game entirely - and both live inside the same install. The 88 Metacritic and 95% positive Steam rating are accurate reflections of what you get when you commit to it.

Diego
Diego · Scout Team

Strategy & simulation

Tags

Single-playerSteam Trading CardsSteam WorkshopPartial Controller SupportSteam CloudFamily SharingsteamOrbital MechanicsTech Tree ProgressionCareer ManagementModdable SimPhysics SandboxHigh ReplayabilityCKAN Mod SupportSteep Learning Curve

System Requirements

Minimum

Processor
Core 2 Duo
Memory
2 GB RAM
Graphics
SM3 512MB VRAM Hard Drive:1 GB HD space

Recommended

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

DLC & Add-ons for Kerbal Space Program3

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Reviews & Ratings

GamerScout
8.8/10
Metacritic
88
Steam
95%(140,491)

Game Info

Developer
Squad
Publisher
Private Division
Release Date
Apr 27, 2015

Game Modes

singleplayer

Languages

Subtitles (9)
EnglishSpanish - SpainSimplified ChineseJapaneseRussianFrench+3 more

Features

Cloud Saves

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Best price€5.16
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Across the 21,448 games we track, a verified key was cheaper than the official store 92% of the time. See the method and the full numbers in our game price report.

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Frequently asked questions about Kerbal Space Program

How much does Kerbal Space Program cost?

As of 18 August 2026, the cheapest in-stock offer for Kerbal Space Program is €5.16 at Eneba, out of 34 live offers we track across verified key stores. Prices change daily — the table on this page is refreshed continuously.

Where can I buy Kerbal Space Program cheapest?

The lowest in-stock price we track for Kerbal Space Program is €5.16 at Eneba (18 August 2026). We compare 34 live offers from verified key stores — the full table with every store and its trust score is on this page.

What platforms is Kerbal Space Program available on?

Kerbal Space Program is available on PC, Mac, Linux, Xbox.

When was Kerbal Space Program released?

Kerbal Space Program was released on 27 April 2015.

Who developed Kerbal Space Program?

Kerbal Space Program was developed by Squad and published by Private Division.

Is Kerbal Space Program worth buying?

Kerbal Space Program holds a Metacritic score of 88/100, making it one of the standout Indie titles. See the full reviews, ratings and how-long-to-beat times on this page to decide.