They Are Billions similar games & best alternatives

They Are Billions

PlayStation 4, Nintendo Switch 2, PC (Microsoft Windows), Xbox One • 2019

Should you play it?

They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?

What works

  • Challenging and rewarding gameplay
  • Unique blend of rts and survival
  • High replayability with randomized maps
  • Immersive steampunk zombie atmosphere
  • Pause feature allowing strategic planning

Things to keep in mind

  • No mid-mission save feature causing frustration
  • Steep learning curve and punishing difficulty
  • Limited campaign content and repetitive hero missions
  • Poor unit pathfinding and some ai quirks
  • Lack of multiplayer or social features

What to play next

Top picks

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Choose your own criteria ->

Last update: 18/09/2026