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Kerbal Space Program

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.

OfficialApr 27, 2015 · SquadIndieSimulationFamily SharingPartial Controller SupportSingle-playerWindows · Mac · Linux

Current best

$39.99

at GOG · Aug 12

All-time low

$9.99

Jun 19, 2026

Stores tracked

2

sources indexed

Review signal

96%

144,374 reviews

Kerbal Space Program cover

Current best · GOG

$39.99

Observed Aug 12

View best listing

Observed low target

$9.99 · based on the previous indexed low

KeyDwarf only tracks observations — checkout happens on the store.

Tracked Stores

Best indexed price $39.99 at GOG.

2/2
G

GOG

BestOfficialIn stock

Kerbal Space Program · Region US · Aug 12

$39.99

View listing
S

Steam

OfficialIn stock

Kerbal Space Program · Region US · Jul 12

$39.99

View listing
How trust is scored: KeyDwarf combines source type, known retailer posture, marketplace risk, activation-region warnings, and source transparency. Checkout and support still happen with the external seller.

Price History

6 observations
Low $9.99
Best observed priceAll-time low

All-time low

$9.99

Jun 19, 2026 · Steam

12-week avg

$24.99

6 recent observations

Current vs low

+300%

Current $39.99

Recommendation

Watch for drop

consider setting an alert

Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.

Media

12 indexed

Common Questions

Where is Kerbal Space Program cheapest right now?

Kerbal Space Program is currently indexed at $39.99 from GOG. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.

What is the historical low for Kerbal Space Program?

The indexed low for Kerbal Space Program is $9.99 from Steam, observed Jun 19, 2026. The current indexed price is 300% above that low, so KeyDwarf labels it "Watch for drop".

Is the top source safe?

GOG is labeled "Official store" in the index. KeyDwarf tracks the listing and source risk, but checkout and support stay with the external store.

What is the review signal?

Kerbal Space Program has a best indexed review signal of 96%.

Can KeyDwarf notify me about a lower price?

Use the alert target control on this page to save a watch target after sign-in.