
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.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.14/day in the week to Aug 22 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
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.
Engagement
Reviews
Themes across 44 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
---{ Graphics }--- ☐ You forget what reality is ☐ Beautiful ☑ Good ☐ Decent ☐ Bad ☐ Don‘t look too long at it ☐ MS-DOS ---{ Gameplay }--- ☑ Very good ☐ Good ☐ It's just gameplay ☐ Mehh ☐ Watch paint dry instead ☐ Just don't ---{ Audio }--- ☐ Eargasm ☐ Very good ☑ Good ☐ Not too bad ☐ Bad ☐ I'm now deaf ---{ Audience }--- ☐ Kids ☑ Teens ☑ Adults ☐ Grandma ---{ PC Requirements }--- ☐ Check if you can run paint ☐ Potato ☑ Decent ☐ Fast ☐ Rich boi ☐ Ask NASA if they have a spare computer ---{ Difficulty }--- ☐ Just press 'W' ☐ Easy ☑ Easy to learn / Hard to master ☐ Significant brain usage ☐ Difficult ☐ Dark Souls ---{ Grind }--- ☐ Nothing to grind ☐ Only if u care about leaderboards/ranks ☐ Isn't necessary to progress ☑ Average grind level ☐ Too much grind ☐ You'll need a second life for grinding ---{ Story }--- ☐ No Story ☐ Some lore ☐ Average ☑ Good ☐ Lovely ☐ It'll replace your life ---{ Game Time }--- ☐ Long enough for a cup of coffee ☐ Short ☐ Average ☑ Long ☐ To infinity and beyond ---{ Price }--- ☐ It's free! ☑ Worth the price ☐ If it's on sale ☐ If u have some spare money left ☐ Not recommended ☐ You could also just burn your money ---{ Bugs }--- ☑ Never heard of ☐ Minor bugs ☐ Can get annoying ☐ ARK: Survival Evolved ☐ The game itself is a big terrarium for bugs ---{ ? / 10 }--- ☐ 1 ☐ 2 ☐ 3 ☐ 4 ☐ 5 ☐ 6 ☐ 7 ☐ 8 ☑ 9 ☐ 10
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English
Hours played at review time, across 44 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Lags with more and more beachballing before eventually stops working on Mac. Totally unplayable. Update: Crashes regularly. No real ending.
So im torn. Im recommending cause there is long term play value even though was released in 2023. SOme major needs are a start tutorial. The AI seems to work very well but some of the issues are the constant clicking just to mine one thing at a time and then it gets overhwhelimg to figure our whats needed for what because things happen totally out of order. But i still recommend. So some of the issues include running out of resources to make more items before you even get to the planet. This doesntmake sense considering the QUANTITY of items under the planet and the ability learn new things doesnt happen till after something else so the balance needs to be adjusted.
Normally i would give a recommend because for a small games its well made. But there is one thing that is really frustrating: In game logic / missing explanations. Normally in such a game new machines, buildings, etc. are either explained how they supposed to work, or its made obvious / logical. Here, unfortunately, it's neither. You build certain things, but it's not explained how they actually work. Sometimes you have to look up the steam discussions to get ahead (as people have asked that before, but the devs didn't fix it/integrate better explanations). Sometimes you can build machines that you cannot use because for that you need to get to the surface and solve something else first (for example for the aquarium, you need 50 bio-research points to unlock a fish to breed. You cannot generate them, so you need to wait for something on the surface to happen (to get the bio-points to unlock the fish), despite the fact that you catch the fish constantly in the water trap and its eggs as well). Why there is such an artificial barrier is beyond me. If it would at least be explained how this is supposed to work, but its not. So as this is not explained at all, you are just dumbstruck and wonder if you have missed something. So progression is all over the place, most things are only vaguely explained or not at all, and often the next step is not obvious/logical, so you have no idea what you need to do to actually get a machine working, which means look up steam discussions. What irks me most here is that these things are really easy to fix, just add explanations to the machines or add more info to the info-overview. It's a small text to add, nothing more, this could be done with a hotfix. Unfortunately this game has very few players and request for support are not really answered mid term. Asked a question a few days ago, no answer. I found out by myself eventually. Until the progression logic is explained better, i cannot recommend this game.
Одни баги, топливо антрацит не загружают в генератор, как не ставь приоритет. Генераторы пустые электричества нет и капец ничего не работает, раньше до обновлений все работало.
gave it just under 2hrs and so far progress seems very slow Awful graphics buggy interface and not much fun, got the game cheap from a Fanatical bundle no way would of paid full price for this.
I'm really enjoying Mercury Fallen. Excellent base building and exploration game. Easy enough to pick up but still challenging enough to keep you interested.
Poor tutorial, just kind of boring. Not terrible, but nothing that plenty of other games in the genre don't do as well or better. If you absolutely have to get it, wait until it's on sale.
1. Woke everyone 2. Marked a few tiles for mining 3. Got stuck in some weird UI mode and couldn't do anything useful or get out 4. Uninstalled Maybe that's not giving it a fair chance, but I don't care to be frustrated by a game right now.
Interesting story, relaxing building sim. Some times a little too much waiting for things to produce, but overall worth trying
Players by region
Where this game's players are, estimated from review languages.
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