Buy Mercury Fallen PC Key

Looking for a cheap Mercury Fallen key? As of 21 Aug 2026 the cheapest key costs A$0.67 at Kinguin. We compare 19 offers from 18 stores, spanning A$0.67 to A$36.50. In keyshops the lowest price is A$0.67, in official stores it starts at A$15.77. With this many sellers the gap between the extremes is often several times over, so picking the store matters more here than waiting for a sale. The price ranks among the lowest we have recorded, cheaper on only 7% of days with data. On PC you buy a key that you activate in Steam or another client, and this is the widest market we track, with more than a quarter of games carrying a keyshop offer.

Release: 22 Aug 2023
Nitrous Butterfly
Metacritic:
tbd tbd
Steam:
Positive (244)
Buy in Official Store:
-60%
A$15.77
Buy in Keyshops:
-98%
A$0.67
In keyshops, the price is close to its historical low.
See price history

Official Stores (8)

DRM:
Steam
Steam
JoyBuggy
Mercury Fallen
Windows
+2
2d ago
DRM:
Steam
JoyBuggy
A$39.92 ~A$15.77
-60%
Gamebillet
Mercury Fallen
Windows
+2
6h ago
DRM:
Steam
Gamebillet
A$34.90 ~A$28.89
-17%
PlanetPlay
Mercury Fallen
Windows
+2
23m ago
DRM:
Steam
PlanetPlay
A$40.05 ~A$30.12
-24%
-10% with GAMESCOMcopy
-10% with GAMESCOMcopy
WinGameStore
Mercury Fallen
Windows
+2
11h ago
DRM:
Steam
WinGameStore
A$34.90 ~A$31.40
-10%
Playsum
Mercury Fallen
Windows
+2
1h ago
DRM:
Steam
Playsum
A$34.90 ~A$31.41
-10%
-10% with XDDEALScopy
-10% with XDDEALScopy
Allyouplay
Mercury Fallen
Windows
+2
16h ago
DRM:
Steam
Allyouplay
A$36.50
Steam
Mercury Fallen
Windows
+2
4w ago
DRM:
Steam
Steam
A$36.50

Keyshops (11)

DRM:
Steam
Steam
Kinguin
Mercury Fallen PC Steam CD Key
Windows
+2
6h ago
DRM:
Steam
Kinguin
A$40.05 ~A$0.67
-98%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Gameseal
Mercury Fallen (PC) Steam Key - GLOBAL
Windows
+2
19h ago
DRM:
Steam
Gameseal
A$36.50 ~A$0.67
-98%
-17% with SEAL17XDDcopy
-17% with SEAL17XDDcopy
G2Play
Mercury Fallen PC Steam CD Key
Windows
+2
1d ago
DRM:
Steam
G2Play
A$40.23 ~A$0.69
-98%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Mercury Fallen Steam Key (PC) GLOBAL
5.0
Windows
+2
7h ago
DRM:
Steam
Eneba
A$40.05 ~A$0.86
-97%
-10% with XDD10copy
-10% with XDD10copy
Difmark
Mercury Fallen (PC)
Windows
+2
3w ago
DRM:
Steam
Difmark
A$36.50 ~A$1.01
-97%
-15% with XDDEALScopy
-15% with XDDEALScopy
Driffle
Mercury Fallen (Global) (PC / Mac) - Steam - Digital Key
Windows
+2
11h ago
DRM:
Steam
Driffle
A$34.21 ~A$1.23
-96%
-6% with XDDEALS6copy
-6% with XDDEALS6copy
Mercury Fallen Steam Key (PC) ROW
5.0
Windows
+2
8h ago
DRM:
Steam
Eneba
A$40.05 ~A$1.34
-96%
-10% with XDD10copy
-10% with XDD10copy

About Mercury Fallen

Mercury Fallen - about the game

Mercury Fallen is a strategy and simulation game that places players in charge of rebuilding a damaged underground facility on an alien planet after a colonization mission goes awry. Colonists awaken to find their intended home in ruins, and the task falls to the player to restore order, gather resources, and expand operations both below ground and across the surface. The experience blends base construction with resource management and gradual discovery of the planet's secrets.

Gameplay

Players begin by clearing debris from the collapsed Mercury Facility and repurposing materials to create essential spaces such as bedrooms, crafting areas, and power infrastructure. Resource scavenging forms the foundation of progress, with players deconstructing old structures to fuel new builds while maintaining oxygen, water, and energy supplies for the growing population.

Colonists possess individual traits that influence their performance, including quirks that affect mood and productivity. Managing their needs involves assigning jobs, providing recreation, and responding to injuries or illnesses that arise during daily operations. Research unlocks new room types, crop varieties, and equipment, allowing the colony to incorporate alien plant life alongside standard terrestrial options for food and production chains.

Expansion extends to the planet's surface through expeditions that locate additional survivors, robotic assistants, and scattered technology. Vehicles enable travel across varied terrain for resource extraction, while surface power networks supplement underground systems. Random events such as structural collapses or crop failures require quick adjustments to prevent setbacks.

Game Modes

Mercury Fallen operates as a single-player colony management experience without separate competitive or cooperative modes. The core loop centers on self-paced progression where players balance construction, research, and exploration at their own rhythm. Procedural generation of the planet and facility layout creates varied starting conditions and resource distributions for each new colony attempt.

Dynamic events and colonist interactions add variability within this framework, encouraging different approaches to workforce expansion through cloning or automation. The absence of predefined scenarios means every run develops according to player choices in layout design and priority setting.

Exploration and Progression

Surface expeditions reveal points of interest that yield rare materials and narrative fragments about the planet's past. These outings support long-term goals by introducing new crafting options and facility upgrades. Technology trees guide advancement toward more efficient systems and specialized equipment for both underground and outdoor operations.

Robots and cloned workers supplement the original colonists, allowing players to scale operations without constant micromanagement of every task. This layered progression rewards consistent attention to infrastructure while leaving room for experimentation with room layouts and crop rotations.

Is It Worth Playing?

Mercury Fallen suits players who enjoy methodical base-building combined with light survival elements and story discovery. Its focus on underground restoration paired with surface ventures provides a distinct take on colony simulation that emphasizes steady expansion over high-pressure crises. The game reached its full 1.0 release after early access, confirming a complete feature set that includes procedural worlds and support for community modifications.

Those seeking a relaxed pace with opportunities to customize colonist appearances and manage interpersonal dynamics will find the systems rewarding. The blend of crafting, research, and exploration creates ongoing objectives that scale with colony size, making it a solid choice for fans of indie strategy titles centered on planetary settlement.

Interface:
English

Age rating

Unavailable
Metacritic:
tbd tbd
Steam:
Positive (244)

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

Recommended:

Minimum:

  • OS: OS X 10.9+
  • Processor: 2.4 Ghz Intel Core i5
  • Memory: 4 GB RAM
  • Graphics: Intel HD 4600 (AMD or NVIDIA equivalent)
  • Storage: 300 MB available space
  • Additional Notes: 64-bit CPU and OS

Recommended:

Historical low
Price history from official stores
A$9.97
PlanetPlay
3 days ago
Price history from keyshops
A$0.46
Kinguin
4 months ago

FAQ

9 questions

Before you start looking for a cheap Mercury Fallen PC key, check the essentials. Developed by Nitrous Butterfly. Published by indie.io. PC released date: 22 Aug 2023. Genres: Strategy, Indie, Simulation. Categories: Family Sharing, Steam Trading Cards, Steam Workshop, Single-player, Steam Cloud.

Q

Where to buy a cheap Mercury Fallen Steam key or CD key?

Using our price comparison and verified discount codes, you can buy a Mercury Fallen key for as low as A$0.67. This deal is available at Kinguin and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest Mercury Fallen price on PC. Check the Mercury Fallen price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the Mercury Fallen Steam price is A$36.50. You can save an extra ~6% by paying with a discounted Steam gift card.

Our price tracker covers both official retailers and key marketplaces, so you can find Mercury Fallen on sale even outside seasonal promotions. We currently detect 19 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, Mercury Fallen is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

On days when both store types carried the game, the keyshop was cheaper by a median of 94%. The spread between offers was wide: from A$0.46 to A$36.50. The cheapest offer came most often from Kinguin: 88 of 184 days with data. The current price ranks among the lowest we have seen: it was cheaper on only 7% of days with data.

Yes. Mercury Fallen has an official page on the Steam Store. You can also buy a Mercury Fallen Steam key from third-party sellers. Our price comparison currently includes 18 offers with Steam DRM. Pick one to ensure your Mercury Fallen download happens on Valve's platform.

Yes, with minor tweaks. Mercury Fallen is Steam Deck Playable - it works after small adjustments like selecting a Proton version or using the touchscreen for tiny launcher text. You can play Mercury Fallen on Steam Deck.

According to our data Mercury Fallen is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Mercury Fallen deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for Mercury Fallen

1 Kinguin Kinguin Keyshop
-98% A$0.67
2 Gameseal Gameseal Keyshop
-98% A$0.67
3 G2Play G2Play Keyshop
-98% A$0.69
4 Eneba Eneba Keyshop
-97% A$0.86
5 Difmark Difmark Keyshop
-97% A$1.01

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