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.

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The alpha 0.14 update is quite a big update and is taking a bit longer than initially planned. I’ve made a lot of great progress and wanted to share some of the things you can expect to find in the next update.

Colonist Portraits

Devlog #32 :: Colonist Portaits

The colonist info window shows a colonist portrait image at the top left. This portrait is generated dynamically and will change when changing outfit colors.

All selectable objects also show an icon at the top left of their info window as well.

Roster Management Window

Devlog #32 :: Roster Management

The colonist selection window for roster management now uses the new colonist portraits for easier identification of the colonist you’re looking for. For more information on the roster management system check out the previous developer log.

New Research Interface

Devlog #32 :: Research Interface

The research interface has been completely redesigned as a visual tech tree. This is something I’ve wanted to do for a longer time, but I wanted to ensure the tech tree was dynamically generated instead of manually positioned. Being dynamically generated means it’s easier to add to/modify and easier for modders once modding is supported. This interface also better visualizes the break down of research progression.

Fine Dining

Devlog #32 :: Cafeteria

The original purpose of the recreation room was for eating as well as entertainment, but I’ve decided to separate out the eating experience into the new cafeteria room. The cafeteria will be for eating tables and the new food dispenser. The food dispenser is a dedicated container for meals and the fridge is being changed to only store raw food ingredients. The existing recreation room will still be available, but will serve little purpose until future updates.

With the addition of new crops and meals I’ve changed how meals affect colonists. Edible items will now have satiation and nutrition attributes. Satiation is how much, in percent, of the hunger bar is decreased when eating that item. Nutrition affects the change rate of the hunger meter which means colonists will get hungry again slower with more nutritious foods. The nutrition affect will naturally decay over a few in-game hours after eating food. Higher quality foods will have better satiation/nutrition values.

There are a lot more additions/changes/fixes coming in the Alpha 0.14 update. As with all major updates, this update will be available on the Test Build beta branch first, for those that want to help work out any issues, before coming to the main branch. I hope to have this update out on the test build branch later this week or next week. Thank you all for your patience and I’m super excited about all the new content this update will bring.

Developer Log #31 :: Alpha 0.14 Progress Update

Developer Log #31 :: Alpha 0.14 Progress Update


Another update to cover some of the things currently being worked on for the alpha 0.14 update. There is a lot of new content in development and it’s...

Developer Log #30 :: Food & More

Developer Log #30 :: Food & More


Developer Log talking about new crops, food items, machines and more that are coming in the next update for Mercury Fallen.

Alpha 0.13 :: Lost & Found Now Available

Alpha 0.13 :: Lost & Found Now Available


Alpha 0.13 is now available on Steam! The new update brings a load of new content, changes and fixes.

Alpha 0.12 :: High Priority

Alpha 0.12 :: High Priority


This update is packed with new content, updates and lots of fixes. While the priority system was certainly a focus for this update there is a lot of additional...


how do the computers work? I tried everything :(

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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.

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

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danto Creator

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

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Latest tweets from @tpelham42

RT @mercuryfall: @gametimeuk1 Playing Mercury Fallen alpha 0.14 live now! Come take a look. :)

Apr 19 2018

RT @mercuryfall: Alpha 0.14 :: Test Build Now Available! #indiedev #indiegame #gamedev #gamingnews

Apr 19 2018

RT @mercuryfall: Developer Log #32 :: Alpha 0.14 Almost There #indiedev #gamedev #indiegame #videogames #gamingnews

Apr 11 2018

RT @mercuryfall: Mercury Fallen is still available on @glightarcade for 25% off! Only 11 days left.

Apr 11 2018

RT @mercuryfall: New research tech tree #ui coming in the next update #indiegame #indiedev #gamedev #screenshotsaturday #gaming

Apr 9 2018

I'll be at #paxeast18 on Sunday with @BethGMS Woot! #indiegames #paxeast

Apr 6 2018

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