They Are Billions

Real-time colony defense against relentless post-apocalyptic zombie swarms

Numantian Games · Released Jun 18, 2019

Reviews: Very Positive; 85% of 51K
Recent reviews: Very Positive; 84% of 139 in 30 days
Playing now: 1,978; right now
Steam Deck: Playable
Last update: 7 years ago; Jun 24, 2019

What is They Are Billions?

A real-time strategy game with pause, set after a zombie apocalypse in the distant future. You gather resources, expand and fortify colonies, train an army, and hold off infected swarms across campaign missions or randomized survival maps.

For you if...

+you enjoy demanding base building with little room for error
+you prefer replayable randomized survival maps
+you want real-time strategy you can pause

Not for you if...

−you want forgiving missions with manual saves or checkpoints
−you prefer cooperative or multiplayer strategy
−you dislike slow resource buildup and punishing restarts

What players say

85% of 51,462 reviews are positive · 84% of 139 in the last 30 days

Players praise the base-building loop, economy planning, and the payoff of watching prepared defenses stop large hordes, especially in survival mode. The most common complaints target the campaign’s tedious hero missions, severe difficulty spikes, and lack of manual or mid-mission saves, which can turn one mistake into a full restart.

Screenshots and trailer

They Are Billions system requirements

As published by the developer.

Minimum

OS: Windows 7, 8, 10 (32 and 64 bits)
Processor: INTEL, AMD 2 cores CPU at 2Ghz
Graphics: Intel HD3000, Radeon, Nvidia card with shader model 3, 1GB video ram.
Memory: 4 GB RAM
Storage: 4 GB available space
DirectX: Version 9.0c
Notes: Minimum resolution: 1360x768, recomended FULL HD 1920x1080.

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 34
Steam features: Workshop, Cloud saves, Family Sharing, Trading cards

Steam Deck: Playable

Sometimes shows mouse, keyboard or non-Deck controller icons
Some text entry requires manually opening the on-screen keyboard
Some in-game text is small and may be hard to read
All functionality is accessible with the default controller configuration
Default graphics settings perform well on Steam Deck

Multiplayer and co-op

Single-player

Languages

Full audio: English. Text only: Spanish - Spain, French, German, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, Italian.