CD Key / Digital Code Metacritic: 88

Buy Kerbal Space Program – Best Deals & Prices

Buy Kerbal Space Program for PC at the best price. Compare Steam key prices across stores, find discounts and cheap game deals, and check price history to spot the lowest offer.

Lowest Price Found Best Deal

Deal

4.87€ Sold on: Kinguin

Go to Store →

• Best deals for this game

Prices and discounts checked in real time at authorized stores

Store	Product Type	Price	Stock	Action
Kinguin Marketplace	CD Key / Digital Code	4.87€	In Stock	Go to Store ›
Loaded Key Reseller	CD Key / Digital Code	6.19€	In Stock	Go to Store ›
Instant-Gaming Key Reseller	CD Key / Digital Code	6.29€	In Stock	Go to Store ›
G2A Marketplace	CD Key / Digital Code	7.66€	In Stock	Go to Store ›
Gamers Gate Key Reseller	CD Key / Digital Code	36.99€	In Stock	Go to Store ›

Active real-time monitoring: We continuously scan dozens of authorized stores, marketplaces, and partner resellers. Currently, keys in stock have only been found at the stores listed above.

Market Price Tracker

▲ Price Spike

Historical stock-style price fluctuation across stores.

Lowest: 4.87€

Highest: 36.99€

Instant-Gaming

Gamers Gate

Loaded

Kinguin

G2A

44.00€

29.04€

14.52€

0.00€

05-11-2026 06-11-2026 07-11-2026 08-11-2026 09-11-2026 10-11-2026 11-11-2026

Frequently Asked Questions

How do I activate my game key? ›

Activation depends on the game's platform. For Steam, open the client and select "Activate a Product on Steam...". For Microsoft Store, redeem via your Microsoft account. For Ubisoft Connect, EA App, Epic Games, or GOG, log into the respective client, access your profile or settings menu, and select "Activate Key" or "Redeem Code". Always verify the specific instructions provided by the store upon purchase.

What is the difference between Store Types (Authorized, Reseller, Marketplace)? ›

Authorized Stores get keys directly from game publishers. Key Resellers buy official keys in bulk to offer lower prices with instant delivery. Marketplaces are platforms where third-party vendors list and sell digital keys.

Are the keys sold by partner stores safe and legal? ›

Yes! All stores listed on our platform are vetted for reliability. Authorized stores work directly with publishers, while reputable key stores and marketplaces guarantee valid activation keys for Steam, Microsoft, and other major gaming platforms.

• 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.

• Screenshots