Mercury Fallen

Indie Simulation Strategy

In stock, Instant delivery

Licensed digital copy

Works in United States,

$24.99

78% (316 reviews) based on Steam data

Works in United States,

Publisher

Indie. io

Developer

Nitrous Butterfly

Release date

22 August 2023

In-game languages

English

Description

Mercury Fallen is a cozy-but-tense colony management and survival sim where a small crew tries to build a new life deep underground. After a crash strands your people in a hostile world, you’ll carve out a base, keep everyone fed and sane, and turn a fragile shelter into a thriving settlement—one room, one system, and one crisis at a time.

Design your bunker with smart layouts, power and production chains, and specialized rooms that keep daily life running. Assign jobs, balance priorities, and watch colonists act on their needs—sleep, food, hygiene, social time—while you juggle shortages, breakdowns, and unexpected emergencies. Every decision matters: expand too fast and resources vanish; play too safe and progress stalls.

Explore beyond your walls to gather materials, uncover new tech, and secure the supplies your colony depends on. Research upgrades to unlock better tools, automation options, and improvements that make survival smoother and more efficient. With a clear interface and satisfying management loops, Mercury Fallen delivers that “one more day” feeling as your settlement grows from survival to stability.

Deep colony management with priorities, roles, and daily routines
Base building underground with interconnected rooms and systems
Research and progression to expand tech and efficiency
Exploration and resource gathering to fuel long-term survival
Emergent challenges that test planning and adaptability

If you love thoughtful management, steady progression, and the satisfaction of a well-run base, Mercury Fallen is your next underground obsession.

System requirements

Minimum

Windows 10+; OS X 10.9+

Processor

2.4 GHz Dual Core; 2.4 Ghz Intel Core i5

Random access memory

4 GB RAM; 4 GB RAM

Video card

DirectX 11 compatible card (shader model 3); Intel HD 4600 (AMD or NVIDIA equivalent)

DirectX

Version 11

Disk space

500 MB available space; 300 MB available space

Additional

64-bit CPU and OS, Windows, Requires a 64-bit processor and operating system, macOS

Only official, licensed copies of games.

PrimePlayer is a dedicated PC game store. We do not resell unknown keys: every game comes from trusted, legal sources and is guaranteed to activate on Steam.

Verified Steam keys

Region-checked offers

Instant digital delivery

Secure payments

Every purchase is protected with a clear key-replacement guarantee if something goes wrong.

All keys are checked for region and version so you always know where they will activate.

Keys are delivered instantly after payment - no queues, no waiting.

Support stays available if you need help with activation or your order.