Single-player games like Mercury Fallen
Below are 10 single-player Steam games similar to Mercury Fallen, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Mercury Fallen page.
Ranked picks
- 1
RimWorld
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Indie with Mercury Fallen.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 2
Dwarf Fortress
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Indie with Mercury Fallen.
Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.
- 3
Aquatico
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Simulation with Mercury Fallen.
Aquatico is a classic city builder set within the depths of the sea. Strategically build an underwater colony atop the ocean floor and face the challenges that accompany oceanic life.
- 4
Oxygen Not Included
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Indie and Simulation with Mercury Fallen.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 5
Surviving Mars
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Simulation with Mercury Fallen.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 6
Stranded: Alien Dawn
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Simulation with Mercury Fallen.
Brave a new world in Stranded: Alien Dawn, a planet survival sim placing the fate of a small marooned group in your hands. Forge your story through compelling and immersive strategic gameplay as you make vital decisions to protect your survivors.
- 7
STATIONflow
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Simulation with Mercury Fallen.
STATIONflow is a game about controlling the flow of thousands of passengers by building and managing an efficient underground train station.
- 8
Planetbase
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Strategy and Indie with Mercury Fallen.
Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.
- 9
Terraria
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Indie with Mercury Fallen.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 10
P.A.C.K. :: Post Apocalyptic Cleaning Kit
Single-player alternative to Mercury Fallen — playable solo, no multiplayer required. Shares Indie and Simulation with Mercury Fallen.
Step into the wheels of a robot in this sci-fi cleaning adventure set after the apocalypse. Wash, vacuum, recycle and repair abandoned structures while learning about the ultimate fate of mankind, alone or with friends.