You will never get tired of building a settlement and defending yourself from waves of zombies. You will find similar gameplay in a selection of games similar to They are Billions from me.

12 Games Like They are Billions For PC (Steam, EGS, GOG)

12. Frostpunk (series)

similar games to Frostpunk

Develop, expand, and advance your city in a society survival game set 30 years after an apocalyptic blizzard ravaged Earth. In Frostpunk 2, you face not only the perils of never-ending winter, but also the powerful factions that watch your every step inside the Council Hall.

Frostpunk screenshot

11. Dream Engines: Nomad Cities

  • Buy: Steam
  • Similarity: 50 %
  • Year of release: 2024
  • Game play time: 30 hours
  • Genre: Survival
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

A survival city-building game with flying cities. Build, automate, and defend a flying city that travels between procedurally generated maps to survive in a wacky, nightmare-infested, post-apocalyptic world full of strange science and dreams.

Dream Engines: Nomad Cities screenshot

10. Infection Free Zone

  • Buy: Steam
  • Similarity: 60 %
  • Year of release: 2024
  • Game play time: 15 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

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!

Infection Free Zone screenshot

9. Project Zomboid

similar games to Project Zomboid
  • Buy: Steam
  • Similarity: 60 %
  • Year of release: 2024
  • Game play time: 100 hours
  • Genre: Survival
  • Singleplayer: yes
  • Coop: yes
  • Multiplayer: yes
  • Trailer: Youtube
  • Reviews: Metacritic

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..

Project Zomboid screenshot

8. Conan Unconquered

  • Buy: Steam
  • Metascore: 62
  • Similarity: 70 %
  • Year of release: 2019
  • Game play time: 20 hours
  • Genre: Strategy
  • Singleplayer: no
  • Coop: yes
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

From the Command & Conquer veterans at Petroglyph comes the first ever survival RTS set in the savage world of Conan the Barbarian. Play solo or team up in multiplayer in Conan Unconquered’s action-packed co-op Mode where you build a shared stronghold and fend off the hordes together.

Conan Unconquered screenshot

7. Diplomacy is Not an Option

  • Buy: Steam
  • Buy: GOG.com
  • Metascore: 81
  • Similarity: 70 %
  • Year of release: 2024
  • Game play time: 25 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

Diplomacy is Not an Option is a strategy game set in a medieval fantasy world. Build your town and defenses, raise huge armies and fight against massive hordes of enemies. How long can you survive?

Diplomacy is Not an Option screenshot

6. From Glory To Goo

  • Buy: Steam
  • Similarity: 70 %
  • Year of release: 2025
  • Game play time: 20 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

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.

From Glory To Goo screenshot

5. Thronefall

  • Buy: Steam
  • Metascore: 92
  • Similarity: 70 %
  • Year of release: 2024
  • Game play time: 12 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

A minimalist game about building and defending your little kingdom.

Thronefall screenshot

4. Age of Darkness: Final Stand

  • Buy: Steam
  • Metascore: 74
  • Similarity: 80 %
  • Year of release: 2025
  • Game play time: 30 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: yes
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

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.

Age of Darkness: Final Stand screenshot

3. IDUN

  • Buy: Steam
  • Metascore: 73
  • Similarity: 80 %
  • Year of release: 2025
  • Game play time: 25 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!

IDUN screenshot

2. The Last Spell

  • Buy: Steam
  • Metascore: 82
  • Similarity: 80 %
  • Year of release: 2023
  • Game play time: 30 hours
  • Genre: Roguelike
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

Defend the last bastion of humanity with your squad of heroes! Exterminate fiendish monsters with magic and brute force by night and re-build your battered city defenses by day in this tactical RPG with rogue-lite mechanics.

The Last Spell screenshot

1. The Riftbreaker


The Riftbreaker™ is a base-building, survival game with Action-RPG elements. You are an elite scientist/commando inside an advanced Mecha-Suit capable of dimensional rift travel. Hack & slash countless enemies. Build up your base, collect samples and research new inventions to survive.

The Riftbreaker screenshot

2 Games Like They are Billions On PlayStation 5

2. Frostpunk (series)

similar games to Frostpunk
  • Buy: Playstation Store
  • Similarity: 10 %
  • Year of release: 2018 - 2024
  • Game play time: 9 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

Develop, expand, and advance your city in a society survival game set 30 years after an apocalyptic blizzard ravaged Earth. In Frostpunk 2, you face not only the perils of never-ending winter, but also the powerful factions that watch your every step inside the Council Hall.

Frostpunk screenshot

1. The Riftbreaker

  • Buy: Playstation Store
  • Metascore: 83
  • Similarity: 80 %
  • Year of release: 2021
  • Game play time: 20 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic
  • Review: IGN

The Riftbreaker™ is a base-building, survival game with Action-RPG elements. You are an elite scientist/commando inside an advanced Mecha-Suit capable of dimensional rift travel. Hack & slash countless enemies. Build up your base, collect samples and research new inventions to survive.

The Riftbreaker screenshot

2 Games Like They are Billions On Xbox Series X|S

2. Frostpunk (series)

similar games to Frostpunk
  • Buy: Xbox Store
  • Similarity: 10 %
  • Year of release: 2018 - 2024
  • Game play time: 9 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic

Develop, expand, and advance your city in a society survival game set 30 years after an apocalyptic blizzard ravaged Earth. In Frostpunk 2, you face not only the perils of never-ending winter, but also the powerful factions that watch your every step inside the Council Hall.

Frostpunk screenshot

1. The Riftbreaker

  • Buy: Xbox Store
  • Metascore: 83
  • Similarity: 80 %
  • Year of release: 2021
  • Game play time: 20 hours
  • Genre: Strategy
  • Singleplayer: yes
  • Coop: no
  • Multiplayer: no
  • Trailer: Youtube
  • Reviews: Metacritic
  • Review: IGN

The Riftbreaker™ is a base-building, survival game with Action-RPG elements. You are an elite scientist/commando inside an advanced Mecha-Suit capable of dimensional rift travel. Hack & slash countless enemies. Build up your base, collect samples and research new inventions to survive.

The Riftbreaker screenshot