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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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Alpha 0.14.4 Now Live


Alpha 0.14.4 is now live on Steam! This update is another small patch/content update while development continues on the planetary exploration/expansion update.

Guide Update

Mercury Fallen :: Help Buttons

New help buttons have been added to various section headers which open the game guide to the relevant guide section. Some of the guide content has been updated and a new guide section on mining has been added.

Updated Water

Mercury Fallen :: Water

Since migrating over to Unity 2017, a few versions back, the look of water wasn’t all the great. The water has been updated and looks more watery now.

Research/Time Of Day Fix

I fixed up a critical issue that caused time of day and research progress to break. If you loaded/started a game after already starting/loading a game the issue would appear. Thankfully this issue has been resolved and research/time of day should work correctly again.

Release Notes

  • Added: Several info window headers now have a “?” button that opens the game guide to the relevant section.
  • Added: Mining section to game guide
  • Updated: Building Objects game guide section
  • Updated: Research Projects game guide section
  • Changed: Water now has a new material shader to look a bit more like water.
  • Changed: Increased chance of emergency rations from food chests
  • Fixed: Colonist attempting to plant crop at a location that can’t be accessed.
  • Fixed: Time of day not updating correctly in some cases if loading/starting a game after a game has been started/loaded
  • Fixed: Research not updating/finishing correctly in some cases if loading/starting a game after a game has been started/loaded
Developer Log #33 :: Planet Map

Developer Log #33 :: Planet Map


Alpha 0.14 was a big update with a lot of new content and now that it’s out the door I’m back to the grind stone working on the next major content...

Mercury Fallen :: Alpha 0.14.1 Patch Now Live

Mercury Fallen :: Alpha 0.14.1 Patch Now Live


Alpha 0.14.1 is a small patch update to fix and tweak a few things such as tutorial tasks, tech tree, food quality and more.

Alpha 0.14 :: Thanks For All The Fish

Alpha 0.14 :: Thanks For All The Fish


I am very excited to announce that Mercury Fallen Alpha 0.14 is now available on Steam! Alpha 0.14 brings a of new build-able objects, recipes, research...

Developer Log #32 :: Alpha 0.14 Almost There

Developer Log #32 :: Alpha 0.14 Almost There


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...


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 itch.io yesterday. Thanks for playing!

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Latest tweets from @tpelham42

RT @mercuryfall: Working on new textures for desert biomes #indiedev #gamedev #indiegame #screenshotsaturday #madewithunity T.co

May 26 2018

RT @mercuryfall: Progress on some planet surface resources. #indiegame #indiedev #gamedev #madewithunity #screenshotsaturday T.co

May 25 2018

RT @legionofmyth: MaxLiao #streams a blind look of Mercury Falling (#mercuryfallen @mercuryfall @NitrousB_Games). Will it be any goo… T.co

May 25 2018

RT @FelixInfintum: I will be playing a new game called #MercuryFallen made by sole developer @tpelham42 from @NitrousB_Games over at… T.co

May 25 2018

RT @mercuryfall: Alpha 0.14.4 Test Build Now Available #indiedev #indiegame #gamedev #gameupdate Mercuryfallen.com

May 24 2018

RT @mercuryfall: Updated water shader to look a bit more water like #indiedev #gamedev #indiegame #screenshotsaturday #madewithunity T.co

May 24 2018

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