CAT Interstellar — cheap CD keys, compare prices
Is it worth buying?
- Reviews are mixed. (Steam 72%)
- The price is above its low (was €0.30), but within a reasonable range. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
A short narrative adventure inspired by Robert Heinlein's novel The Moon Is a Harsh Mistress. An indie sci-fi experience built around exploration and storytelling.
Did you know?
The game draws inspiration from Robert Heinlein's classic 1966 science-fiction novel.
Best price today
€0.44
all-time low: official €0.87 · keyshop €0.30 (+47%)
On Steam: €0.87 — you save 49% here
The cheapest CAT Interstellar key right now costs €0.44 at Kinguin — the best of 5 compared offers. The lowest price we have recorded for this game: €0.30. The cheapest official store price is €0.87 at Steam.
The average low over the past 5 months was €2.24.
Prices as of
GameSeal Marketplace
Steam Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
CAT Interstellar prices by store 5
| Store | Type | Price |
|---|---|---|
| Kinguin | Marketplace | €0.44 |
| GameSeal | Marketplace | €0.46 |
| Driffle | Marketplace | €0.76 |
| Steam | Official store | €0.87 |
| G2A | Marketplace | €1.35 |
Lowest — official stores
€0.87
Aug 2026
Lowest — keyshops
€0.30
Aug 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €0.87 | €0.44 |
| Sept 2026 | €0.87 | €0.30 |
| Aug 2026 | €0.87 | €0.30 |
| Jul 2026 | €9.75 | €0.42 |
| Jun 2026 | €9.75 | — |
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: Kinguin, GameSeal, Driffle, Steam, G2A
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All-time low so far: €0.30
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 7, 8.1, 10 (64-bit) | Windows 7, 8.1, 10 (64-bit) |
| Processor | 2 GHz Quad-Core | 2 GHz Quad-Core |
| Memory | 2 GB RAM | 2 GB RAM |
| Graphics | Nvidia GTX 750 | Nividia GTX 970 |
| DirectX | Version 11 | Version 11 |
| Storage | 5 GB available space | 5 GB available space |
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About this game — FAQ
Can CAT Interstellar be played single-player?
Yes, CAT Interstellar is a single-player game.
Does CAT Interstellar support a controller/gamepad?
Yes, CAT Interstellar has full controller support.
What languages does CAT Interstellar support?
CAT Interstellar is available in: English.
FAQ
Where is the cheapest place to buy a CAT Interstellar key?
The cheapest CAT Interstellar key is currently sold by Kinguin for €0.44. That is the best of 5 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €0.30.
How much does CAT Interstellar cost?
CAT Interstellar currently costs from €0.44 — the cheapest offer across the stores we track. For comparison, the game costs €0.87 on Steam, so buying a key saves you about 49%.
Is Kinguin an official store or a keyshop?
Kinguin is a keyshop (marketplace) where independent sellers list keys, so prices are often lower than in official stores. Every offer on ulov.gg is clearly labeled with its store type.
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.