INTERSTELLAR PRIME — cheap CD keys, compare prices
Is it worth buying?
- The price is well above its low (was €3.86) — worth waiting for a drop or setting an alert. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
Interstellar Prime imagines humanity on a course toward its own extinction. Blending space simulation, real-time strategy, and role-playing elements, the game takes players deep into what lies ahead for our star system and the vast unknown past it, framed as a desperate struggle to survive. The title is available in Early Access and was developed and published by Dreamcatcher Studio in 2020.
Best price today
€8.19
all-time low: official €8.19 · keyshop €3.86 (+112%)
The cheapest INTERSTELLAR PRIME key right now costs €8.19 at Steam. The lowest price we have recorded for this game: €3.86.
The average low over the past 4 months was €6.06.
Prices as of
Steam best price Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Lowest — official stores
€8.19
Jul 2026
Lowest — keyshops
€3.86
Aug 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €8.19 | — |
| Sept 2026 | €8.19 | — |
| Aug 2026 | €8.19 | €3.86 |
| Jul 2026 | €8.19 | €3.99 |
Lowest in-stock price per month from our price history; the current month is the low so far.
How to activate your key
- Steam key — open the Steam client → Games → Activate a Product on Steam → enter the key. Stores with this activation: Steam
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All-time low so far: €3.86
System requirements
| Minimum | |
|---|---|
| OS | Windows 10 |
| Processor | Core i7 |
| Memory | 16 GB RAM |
| Graphics | Nvidia GTX 1060 and above |
| DirectX | Version 11 |
| Storage | 10 GB available space |
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About this game — FAQ
Can INTERSTELLAR PRIME be played single-player?
Yes, INTERSTELLAR PRIME is a single-player game.
What languages does INTERSTELLAR PRIME support?
INTERSTELLAR PRIME is available in: English.
FAQ
Where is the cheapest place to buy a INTERSTELLAR PRIME key?
The cheapest INTERSTELLAR PRIME key is currently sold by Steam for €8.19. The lowest price we have ever recorded for this game: €3.86.
How much does INTERSTELLAR PRIME cost?
INTERSTELLAR PRIME currently costs from €8.19 — the cheapest offer across the stores we track.
Is Steam an official store or a keyshop?
Steam is an official store — keys come directly from the publisher or an authorized distributor.
Are keys from these stores legal?
Buying is legal — keys come from the grey market, so a small deactivation risk exists. So before paying, check the seller's buyer protection.
Which key region should I pick?
Global activates everywhere. Regional keys (Europe, North America, RU-CIS) only work on accounts from that region — use the Region filter to match your account.
What is an activation platform?
The service where the key activates — Steam, GOG, Epic or the publisher's platform. A key for one platform won't work on another, hence the separate filter.
What's the difference between editions?
Standard is the base game; Deluxe usually adds an expansion or bonus content. The edition filter shows exactly that variant, with no mixed prices.