Moon Defence — cheap CD keys, compare prices
Is it worth buying?
- The price is at or near its all-time low — a good time to buy.
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
Moon Defence is a deliberately harsh indie action game where aiming is awkward, movement is sluggish, and resources are scarce. Set in the silent void of space where no one hears your scream, this self-developed 2021 title rewards patience and endurance on an unforgiving Moon.
Best price today
€7.39
all-time low: official €7.39 near low
The cheapest Moon Defence key right now costs €7.39 at Steam. The lowest price we have recorded for this game: €7.39.
The average low over the past 5 months was €7.39.
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
€7.39
Jul 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €7.39 | — |
| Sept 2026 | €7.39 | — |
| Aug 2026 | €7.39 | — |
| Jul 2026 | €7.39 | — |
| Jun 2026 | €7.39 | — |
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: €7.39
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 7 64-bit | WIndows 10 64-bit |
| Processor | Intel i3 or AMD equivalent | — |
| Memory | 6 GB RAM | 8 GB RAM |
| Graphics | AMD Radeon R7 M265 | GTX 1060 or AMD equivalent |
| DirectX | Version 11 | Version 11 |
| Storage | 5 GB available space | 5 GB available space |
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About this game — FAQ
Can Moon Defence be played single-player?
Yes, Moon Defence is a single-player game.
What languages does Moon Defence support?
Moon Defence is available in: English, Russian.
Does Moon Defence use Steam Cloud saves?
Yes, Moon Defence uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a Moon Defence key?
The cheapest Moon Defence key is currently sold by Steam for €7.39. The lowest price we have ever recorded for this game: €7.39.
How much does Moon Defence cost?
Moon Defence currently costs from €7.39 — 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.