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A sci-fi colony management sim with a focus on exploration, expansion, and survival. Rebuild your underground facility, manage colonists and robots, and uncover the mysteries of an alien world light-years from Earth. Dig deep, expand across the surface, and shape your new home.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
How it worksTracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
Third-party resellers. Often cheaper, without official store support. Keyshop prices vs Steam →
After a long journey to a distant planet, your colonists were supposed to wake up and begin building their new home. But something went wrong. Their stasis capsules malfunctioned, and when they finally awakened, the underground facility they were meant to inhabit has fallen into ruin.
Now, it's up to you to restore the base, manage resources, and expand across the planet’s surface—all while uncovering the secrets of this alien world and ensuring your colony thrives.
Mercury Fallen is a self-paced sci-fi colony management experience with a focus on exploration, expansion, and story-driven progression. Deconstruct the remnants of an abandoned facility, construct new rooms, conduct research, and grow your colony both underground and across the planet’s surface.
Tear down the ruins, scavenge resources, and transform the underground into a thriving colony. Design essential rooms, power systems, and infrastructure to support your growing population.
Uncover additional colonists, robots, and discoveries hidden in collapsed sections of the Mercury Facility.
Build and manage power and water resources to sustain your growing colony.
Unlock advanced technology, craft vital upgrades, and send colonists on daring expeditions to uncover alien artifacts, lost technology, and the secrets buried beneath the planet’s surface.
Research technology to unlock new rooms, crafting recipes, crops, and facility upgrades.
Discover alien plant life and new resource types to fuel your colony’s expansion.
Expand beyond the underground with surface expeditions and resource extraction.
Construct vehicles to explore alien terrain and extract rare materials.
Expand your power network above ground with multiple energy generation methods.
Send colonists to explore points of interest, uncovering new resources, hidden lore, and lost technology.
Every colonist has a story. Some will thrive, others will struggle—but they all rely on you. Keep them housed, happy, and well-fed while managing their quirks, relationships, and unexpected disasters. As your colony grows, expand your workforce with clones and automated robots to optimize daily operations.
A Colony That Feels Alive: Colonists have unique quirks, moods, and challenges. Keep them happy, or risk disaster as stress builds and problems arise. Manage colonists’ injuries, ailments, jobs, quirks, and needs to ensure long-term survival.
Build & Design Essential Spaces: Construct bedrooms, recreation areas, crafting stations, and more to meet the growing needs of your colony.
Customize your Colonists: Give your settlers unique names, outfits, and equipment, making each colonist truly your own.
Cultivate Alien and Terrestrial Crops: Grow a variety of terrestrial and alien crops to sustain your colony and fuel advanced production chains.
Expand Your Workforce: Grow clones and assemble robots to expand your facility population.
Brace for the Unexpected: React to and prepare for random events, including cave-ins and crop disease.
Procedurally generated worlds ensure a fresh experience each time, while Steam Workshop modding support lets you expand and customize your gameplay. Dynamic events introduce unexpected challenges and opportunities, making each colony feel unique.
Every colony tells a different story. Will yours flourish or fall? With procedurally generated worlds, dynamic challenges, and a blend of underground base-building, planetary exploration, and rich storytelling, Mercury Fallen is an ever-evolving adventure—whether you prefer a laid-back experience or a challenge that keeps you on your toes.
Lowest tracked price: PLN 2.46 (Jul 9, 2026) · current best: PLN 2.48 across 6 stores.
78% positive reviews all-time · 7 peak players in the last 30 days.
Right now the cheapest offer for Mercury Fallen is PLN 2.48 at Eneba. KingsPrice compares 6 offers from 6 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Mercury Fallen is PLN 2.46 (recorded on Jul 9, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Mercury Fallen peaked at 7 concurrent players on Steam in the last 30 days (highest on Jul 19, 2026). The player chart on this page updates daily.
Keyshops are marketplaces that resell game keys, usually below official store prices. The keyshops listed on KingsPrice deliver genuine Steam keys, but buyer protection differs from official stores — check the shop's rating and refund policy before buying. You can hide keyshop offers at any time with the keyshops toggle. Keyshop prices vs Steam →
Create a free price alert on this page and KingsPrice will email you when Mercury Fallen drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
