Single-player games like They Are Billions
Below are 15 single-player Steam games similar to They Are Billions, 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 They Are Billions page.
Ranked picks
- 1
Frostpunk
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Frostpunk is the first society survival game. As the ruler of the last city on Earth, it is your duty to manage both its citizens and infrastructure. What decisions will you make to ensure your society's survival? What will you do when pushed to breaking point? Who will you become in the process?
- 2
Final Outpost: Definitive Edition
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Final Outpost is a survival strategy base-builder. You lead the last survivors of the apocalypse. Assign roles, craft tools, and manage resources carefully. Construct buildings, level up your citizens, and fortify your town against hordes of zombies. How many days can you survive?
- 3
Against the Storm
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
- 4
Judgment: Apocalypse Survival Simulation
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Build, scavenge, craft, and perform occult rituals to survive in a demon-infested, post-apocalyptic colony simulation. Will you survive Judgment day?
- 5
From Glory To Goo
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.
- 6
Zombie Cure Lab
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
In a world overrun by the undead, build a lab to fight back with science. Manage survivors, gather vital resources, and turn zombies into allies. Defend your base and research the cure to reclaim humanity.
- 7
Freaking Meatbags
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Land on a planet, pick up some rocks, leave before the solar system explodes. Oh, and don't die in the nightly robot attacks! Freaking Meatbags is a humorous real-time strategy game that's all about building a base, mixing meatbag DNA, then convincing those dolts to help you gather resources.
- 8
Infection Free Zone
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Choose any real region from the world. Choose your base of operations, then rebuild and readapt the buildings around you to create a self-sustaining settlement. Take charge of a group of survivors from your city. And when the night falls - Defend the zone from the infected!
- 9
Age of Darkness: Final Stand
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Age of Darkness: Final Stand is a dark fantasy survival RTS where you must illuminate, build and defend humanity’s last bastion against hordes of Nightmares. Set in the remnants of a kingdom consumed by a deadly fog, you decide. Will you hide in the light? Or take back your world.
- 10
SC2VN - The eSports Visual Novel
Single-player alternative to They Are Billions — playable solo, no multiplayer required.
SC2VN is a visual novel about the South Korean StarCraft 2 scene. You play as Mach, a foreign semi-pro trying to make it in eSports who soon learns that success in StarCraft takes more than in-game strategy.
- 11
RimWorld
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
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.
- 12
Project Zomboid
Single-player alternative to They Are Billions — playable solo, no multiplayer required.
Project Zomboid is the ultimate in zombie survival. Alone or in MP: you loot, build, craft, fight, farm and fish in a struggle to survive. A hardcore RPG skillset, a vast map, massively customisable sandbox and a cute tutorial raccoon await the unwary. So how will you die? All it takes is a bite..
- 13
Rebuild 3: Gangs of Deadsville
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Rebuild a ruined city in this post-apocalyptic mix of strategy and simulation. Manage survivors, scavenge for food and supplies, deal with rival gangs, illness, interpersonal strife and zombie attacks.
- 14
Cataclismo
Single-player alternative to They Are Billions — playable solo, no multiplayer required. Shares Strategy with They Are Billions.
Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.
- 15
Lords of Xulima
Single-player alternative to They Are Billions — playable solo, no multiplayer required.
Lords of Xulima is a challenging Role-playing game set on the mythical continent of Xulima, where Gods and humans once walked side by side. Experience a genuine RPG featuring over 100 hours of gameplay, and discover one of the most epic sagas ever told.