They Are Billions
Short description
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?
- Developer
- Numantian Games
- Publisher
- Numantian Games
- Release
- Tue, Jun 18, 2019
- Price
- $29.99
- Reviews
- 46,324
- Positive
- 85%
- Followers
- 280,793
- Owners (estimated)
- 2M – 5M
- Concurrent players
- 2,655
- Genres
- Strategy
- Features
- Steam Trading Cards, Steam Workshop, Stats, Steam Leaderboards, Includes level editor, Remote Play on Tablet
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by $27.91, the average price these copies actually sold for — weighted from the price history rather than taken from the $29.99 launch price. That is 7% below list price on average. Before Steam's cut, VAT and refunds. How these numbers are calculated.
Waiting for They Are Billions to get cheaper? Name your price and we will email you when it gets there.
Media
History
87 data points since Aug 16, 2026. Gaps mean nothing changed — the value carries forward.
The revenue curve is an estimate, not a measurement. It is the only calculated series here: each interval takes the review growth of that period, multiplies it by the sales-per-review factor and by the price actually charged at the time, and adds the result to the running total. That is why it climbs more slowly through discount periods than the review curve next to it. The last point is the same figure quoted above — gross, before Steam's cut, VAT and refunds. How these numbers are calculated.
The blurred area is the rest of the history. 303 further data points reach back to Oct 1, 2017 — your plan shows the last 90 days of it. How far each series in particular reaches is written on its own chart; not every one of them goes back that far. The shape in the blurred area is decoration, not data: the figures are not in this page at all. Plus unlocks the complete series.
Lowest recorded price: $18.74 on May 5, 2018.
Similar games that found an audience
Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with They Are Billions. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.
| Image | Name | Studio | Shared | Tag difference | Price | Reviews | Positive | Released | Revenue (estimated) |
|---|---|---|---|---|---|---|---|---|---|
|
RimWorld | Ludeon Studios first game | 4 | − Zombies − RTS + Sandbox + Management | $34.99 | 210,381 | 98% | Wed, Oct 17, 2018 | $168m $141m – $168m |
|
Surviving Mars | Haemimont Games 16 titles +1 | 4 | − Zombies − RTS + City Builder + Space | $29.99 | 17,453 | 79% | Thu, Mar 15, 2018 | $21.5m $9.6m – $137m |
|
Going Medieval | Foxy Voxel first game | 4 | − Zombies − RTS + Voxel + Management | $29.99 | 17,100 | 89% | Tue, Mar 17, 2026 | $24.1m $24.1m – $33m |
|
Space Haven | Bugbyte Ltd. 2 titles | 4 | − Zombies − RTS + Space + Simulation | $24.99 | 10,384 | 86% | Wed, May 13, 2026 | $9.8m $4.4m – $10.5m |
|
Planetbase | Madruga Works 4 titles | 4 | − Zombies − RTS + City Builder + Space | $14.99 | 9,590 | 80% | Thu, Oct 15, 2015 | $6.1m $2.7m – $28.3m |
There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.