Manage a group of colonists as they attempt to survive underground on an alien world. Automated machine construction was sent ahead to create the Mercury facility, but something has gone wrong and your colonists awake to find the facility in ruin. Build structures, research new technologies and send out expeditions to the surface to ensure the survival of your new found home away from home.

Mercury Fallen is heavily inspired by games such as Banished, Dungeon Keeper II and RimWorld. While there is no plan for combat, there will certainly be challenges your colonists will face.

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media
Post article RSS Articles

Alpha 0.07 :: Medical Issues


Mercury Fallen Alpha 0.07 Header

This is definitely one of the larger updates so far for Mercury Fallen and I’m very excited to announce that Alpha 0.07 is now available on Itch.IO. Lots of great new features, changes and fixes.


Colonists can now contract ailments, that negatively affect colonist attributes in different ways, from performing various jobs . Some ailments are minor and will heal themselves over time, but all can be healed at the MedBay.


Mercury Fallen MedBay

The doctor job role finally comes in to play by treating patients at the Medi-Bed in the new MedBay room. Doctors will remove Ailments and restore colonist health. Colonists will seek treatment if their health is low and/or have an ailment.

Attribute Visibility

Mercury Fallen MedBay

Work Speed and Move Speed attributes are now visible in the colonists info window under Stats. New Quirks added which affect work speed.

UI Improvements

Mercury Fallen UI Improvements

The build window now has a better break down of requirements including power & water requirements.

Colonist management window now has a button on the menu bar at the bottom. The Colonist Management screen can still be toggled by pressing the ‘Tab’ key.

Various Improvements

The crafting stations queue has been fixed so that colonists will now craft the first item they can based on available resources instead of doing nothing if they can’t build the first item in the queue.

Various changes to resource requirements, new Quirks, bug fixes and more. For the full list of changes please see the release notes below.

Release Notes


  • New MedBay Floor
  • New Medi-Bed
  • Added Ailments which are contracted by various actions/events. Ailments that are job action specific are less likely, or won’t happen at all, at higher skill levels of a job. A colonist can have a maximum of 3 ailments at any time and can be removed by getting treated at the Medi-Bed. Some ailments expire naturally over time.
  • New notifications added when a colonist contracts an ailment
  • Smarts stat now increases job skill experience gain by 10% per level of Smarts
  • Added setting for Mouse rotation speed
  • Added several more Quirks
  • Work Speed now visible in Colonist stats
  • Move Speed now visible in Colonist stats
  • New Colonists button to main button bar to open management interface
  • New object selection sound effect


  • Default mouse rotation speed increased
  • Colonists will now stop current action to handle a critical need such as eating/sleeping if the current action can be interrupted. Not all actions are interruptible.
  • New colonist animation for Bio-Refiner interaction
  • Reduced speed of job level progression for some job roles
  • Increased resource requirements for some floors
  • Changes to how experience is gained when performing jobs. Job experience earned is better balanced between different types of jobs.
  • Changed work speed algorithm for better results at higher levels. Initial work speeds are now a bit slower.
  • Power/Water requirements for objects now shown in build window
  • Floor icon now shown in build window
  • Cloning Chamber now requires MedBay Floor
  • Cloning Chamber now requires separate Cloning data recovery
  • Increased data recovery times
  • Data Recovery window now shows time remaining
  • Improved performance of hunger attribute handling
  • Updated new game map colors


  • Fixed colonist path movement to resolve the issue of colonists not reaching their destination when in Hyper speed.
  • Fixed issue with Hauling job not earning experience
  • Fixed floor geometry so that colonists and objects don’t stick through the floor slightly
  • Fix to sleep on floor action to stop colonists from sleeping inside objects
  • Object placement now correctly takes any interaction spots into account. This means that you can no longer place objects facing a wall or another object if it overlaps that interaction spot.
  • Fixed interaction spots not showing correctly on some objects
  • Updated colonist wander behavior to resolve colonists getting stuck in wandering action in some cases
  • Colonist now rotate to face a container they are interacting with
  • Fixed another instance of a wall corner showing the wrong wall material
  • Colonist will more immediately stop performing active job if it’s disabled in the job list
  • Colonist will now craft next available item in craft queue if first item isn’t craftable due to missing resources
  • Fixed issue with craft queue appearing out of order after removing and re-adding an item.
  • Fixed issue with colonist getting stuck if item is removed from a craft queue while attempting to craft that item
  • Fixed error that could occur during crop growth and harvesting
Alpha 0.06 :: Paranoid Colonists

Alpha 0.06 :: Paranoid Colonists

News 1 comment

Alpha 0.06 now available and features new colonist stats info, new decoration, Quirks and more.

Developer Log #19 :: Quirks

Developer Log #19 :: Quirks


Work continues on Mercury Fallen and the next update focuses around colonist attributes and a new feature called Quirks.

Alpha 0.05 :: Colonist Management

Alpha 0.05 :: Colonist Management


Another week and another update for Mercury Fallen. After the big fixes in the last update I wanted to focus back on new content. New in 0.05 is the colonist...

Alpha 0.03 :: Dining In Style

Alpha 0.03 :: Dining In Style


Alpha 0.03 is now available. This new update addresses several issues as well as adds some new features such as functional eating tables and customized...


how do the computers work? I tried everything :(

Reply Good karma Bad karma0 votes
Danto Creator

The computer station needs a colonist set to the scientist profession and an active data recovery project. The computer station will also need power conduits to connect it to power. Hope that helps and thanks for checking out the game.

Reply Good karma+1 vote

This comment is currently awaiting admin approval, join now to view.


Is it ha clone chamber available for use i have the demo I think.

Reply Good karma Bad karma+1 vote
Danto Creator

The clone chamber is available for use in the latest update which was released on yesterday. Thanks for playing!

Reply Good karma+1 vote
Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.

Follow Report Profile
Mercury Fallen
Windows, Mac
Nitrous Butterfly
Send Message
Release date
Game watch
Community Rating



1 vote submitted.

You Say


Ratings closed.

Single Player

Latest tweets from @tpelham42

RT @mercuryfall: Working on more decorative objects #indiedev #gamedev #indiegame #screenshotsaturday

8hours ago

RT @mercuryfall: Alpha 0.07 :: Medical Issues Now Live! #indiedev #gamedev #indiegame #gamingnews

Aug 15 2017

RT @mercuryfall: Improved build info and much more coming soon. #indiedev #gamedev #indiegame #gameart

Aug 14 2017

RT @mercuryfall: Alpha 0.06 :: Paranoid Colonists now available! #indiedev #gamedev #indiegame #GamingNews

Aug 1 2017

RT @mercuryfall: Working on camera tracking selected colonist/object. #indiedev #gamedev #indiegame #videogames

Jul 31 2017

Embed Buttons
Link to Mercury Fallen by selecting a button and using the embed code provided more...
Mercury Fallen
Last Update
7 members
You may also like
Planet Nomads
Planet Nomads Futuristic Sim
ScrumbleShip Futuristic Sim
Cosmoteer Futuristic Sim