Mercury Fallen — cheap CD keys, compare prices
Is it worth buying?
- Reviews are solid. (Steam 78%)
- 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 science-fiction base-building simulation that revolves around scouting new territory, growing your outpost and simply staying alive. Players restore a subterranean base, direct a workforce of settlers and machines, and slowly piece together the secrets of a distant alien planet far from Earth. Progress comes from tunneling downward and pushing outward on the surface to establish a lasting settlement. Nitrous Butterfly developed the game, and indie.io published it in 2023.
Best price today
€0.44
all-time low: official €7.59 · keyshop €0.30 (+47%)
On Steam: €9.80 — you save 96% here
The cheapest Mercury Fallen key right now costs €0.44 at Kinguin — the best of 10 compared offers. The lowest price we have recorded for this game: €0.30. The cheapest official store price is €7.59 at Fanatical. — the best offer is €7.15 (94%) cheaper.
The average low over the past 4 months was €0.41.
↳ chosen by the region label on the key — not a guarantee
Prices as of
GameSeal Marketplace
Kinguin Marketplace
Fanatical Official store
Steam Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Mercury Fallen prices by store 9
| Store | Type | Price |
|---|---|---|
| Kinguin | Marketplace | €0.44 |
| GameSeal | Marketplace | €0.46 |
| K4G | Marketplace | €0.65 |
| Driffle | Marketplace | €0.77 |
| G2A | Marketplace | €1.31 |
| Loaded | Marketplace | €6.79 |
| Instant Gaming | Marketplace | €7.39 |
| Fanatical | Official store | €7.59 |
| Steam | Official store | €9.80 |
Lowest — official stores
€7.59
Oct 2026
Lowest — keyshops
€0.30
Sept 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €7.59 | €0.44 |
| Sept 2026 | €7.83 | €0.30 |
| Aug 2026 | €8.32 | €0.40 |
| Jul 2026 | €8.32 | €0.49 |
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, K4G, Driffle, G2A, Loaded, Instant Gaming, Fanatical, Steam
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Confirm in our Telegram bot — no account, no spam.
All-time low so far: €0.30
System requirements
| Minimum | |
|---|---|
| OS | Windows 10+ |
| Processor | 2.4 GHz Dual Core |
| Memory | 4 GB RAM |
| Graphics | DirectX 11 compatible card (shader model 3) |
| DirectX | Version 11 |
| Storage | 500 MB available space |
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About this game — FAQ
Can Mercury Fallen be played single-player?
Yes, Mercury Fallen is a single-player game.
What languages does Mercury Fallen support?
Mercury Fallen is available in: English.
Does Mercury Fallen use Steam Cloud saves?
Yes, Mercury Fallen uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a Mercury Fallen key?
The cheapest Mercury Fallen key is currently sold by Kinguin for €0.44. That is the best of 10 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €0.30.
How much does Mercury Fallen cost?
Mercury Fallen currently costs from €0.44 — the cheapest offer across the stores we track. For comparison, the game costs €9.80 on Steam, so buying a key saves you about 96%.
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.