GAME · released

They Are Billions

Numantian Games

Quick read

They Are Billions is a colony RTS that ends when the horde finds the hole you left in the wall — a campaign of postponing that minute.

What kind of game is it?

Base-building against a timer of zombies. You expand a colony, then the swarm tests every gap. This is a campaign map rather than a co-op extract or a belt factory, and the next sitting is the hole you left in the south wall.

Who is it for?

For players who keep postponing the minute the horde finds the gap in the wall.

With friends

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How it plays

Loop: Running a colony
Sessions: Long sessions
Progression: Campaign
Players: Single-player
Structure: Systemic
Tone: Tense · Brutal

Game DNA

What playing it feels like, out of 100. Our reading, separate from Steam reviews.

Progression80
Estimate
Social18
Estimate

Key Steam facts

Steam store figures, checked 17 Aug 2026.

Release

released

2019-06-18

Review score

85%

Checked 17 Aug 2026.

Steam positive percent.

Review count

51,313

Checked 17 Aug 2026.

Store price

€29.99

Checked 17 Aug 2026.

Languages

Demo

Early Access

Players

Single-player

How many people play They Are Billions?

Estimates from public Steam data, not figures from the studio. Ranges, not exact numbers.

Estimated copies

1.3M – 2.8M

Steam reviews × 25 to 55. For a free game: players, not sales.

All-time peak players

22,295

Most people playing at the same moment, per SteamCharts.

Average players, Aug 2026

2,097

Peak that month: 3,702.

Median playtime

98.9 h

Half of 300 recent reviewers played 37.9–272.7 h. 2% under 2 h.

Players over time

Sept 2023Aug 2026

Where the players are

Languages of the last 300 Steam reviews. A proxy for regions, not a country split.

English36%
Simplified Chinese32%
Russian6%
German5%
Spanish (Spain)5%
Korean4%

Steam data checked 4 Oct 2026

What makes it different?

The swarm is the clock. Deep Rock's swarm is a drop you extract from; this one is a campaign that ends when the wall fails.

Core mechanics

Similar games

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Related games

Nearby games. Not always a direct substitute.

Shared: Base building, Colony sim, Strategy, City builder

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Northgard is a compact Viking RTS: expand a clan, survive winter, contest victory conditions.

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Genre / subgenre

Steam genre: Survival.

Related rankings

Sources

Store price checked 17 Aug 2026.

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