They Are Billions
Worth it · Strategy · 2019
Steam Deck PlayableThe verdict
BUY IT.
Worth it at $29.99.
- Length
- 66.6h
- Value
- $0.45/hr
- Reviews
- 85% positive
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Minimum on the Steam store: 4 GB of memory, Intel HD3000, Radeon, Nvidia card with shader model 3, 1GB video ram., 4 GB of storage. Windows only.
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 drives the score
How to read this
Every input gets a grade, S to D, read from the buyer's side. The score is multiplicative, so an input only counts as raising when it sits near the top of its own scale. Anything with real room left is holding the score back, because that room is the gap to 100. ▲ marks a lift, ▼ a drag or a dock, ? an input we do not have, • a fact this genre's score does not use. The exact weights stay secret.
The value story
May 2018 is where it bottomed out, at $18.74. It has been discounted 94 times in the 9 years tracked here, typically at 20 percent off, with about 5 weeks between sales. Today it is at full price. The last sale was about 4 weeks ago, and on this game's rhythm the next one tends to arrive within 5 weeks.
Value puts it in the top 3 percent of the games it competes with. It is pricier than 97 percent of its genre, and better reviewed than 89 percent. Among the games that feel like it, Frostpunk ($5.99, scores 89) beats it on value, while it beats IXION ($34.99, scores 51).
Critics scored it 77. Players sit 8 points higher at 85 percent, which usually means a game that plays better than it reviews.
4 of the 800 Steam-purchase reviews sampled here come from buyers who refunded the game, sampled from reviews written May 2025 to September 2026. Inside the two-hour refund window, 53 percent of the 1,149 reviews written there were positive, against 85 percent overall, and those are 2 percent of everything written about it.
The main story runs 66.6 hours. Doing everything runs 163, 2.4 times as long.
It came out 7 years ago and 2.8K were still playing it at the last check.
The drop-off
62% start to <1% rarestNo achievement in this game marks the ending, so there is no finish rate. The curve runs from the most-unlocked achievement to the rarest, and its shape is where players stop. Steam global achievements
Players
2,751 players at peak in the last day.
The chart appears once this game has been counted more than once.Player counts via SteamSpy.
What players say
A fantastic and addictive strategy game! They Are Billions is one of the most satisfying survival strategy games I've played. The combination of city building, resource management, exploration, and defending against enormous zombie hordes creates a genuinely tense and rewarding experience. I especially love how every decision matters. Expanding too quickly can leave your colony vulnerable, while playing too...
Very fun game for strategists. Currently ended my 2nd campaign playthrough on 800% difficulty. Sadly there is no official DLC. Only mods. I´m pretty sure if they released some DLC campaigns (like AoE2 does) people would come in billions
1 tiny mistake and you have to restart the whole run. Porgression and what you unlock is very impactful, reclaiming the map during the game feels freat and going up against this many zombies is quite unique. Can't recommend because of how much the game does not respect your time.
Player reviews from Steam: the most helpful all-time, plus the newest that clear the same quality bar, with the hours each player had put in when they wrote it. The mix of Recommended and Not recommended follows the game's Steam ratio. Rotates daily. Opinions are theirs.
Cite this score
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They Are Billions scores 71/100 on the BANG Score (worth it). The BANG Score rates what a game is worth for the money. Via Steam BANGERS. https://steambangers.com/game/644930/they-are-billionsThe BANG Score is one number for value, 0 to 100: price against how it reviews and how long it was built to be. It answers the money question and stops there; whether the game is for you is still your call.
Reviews set the ceiling and price moves you inside it, so a cheap game that reviews badly cannot climb. Ratings from few reviewers are shrunk toward the middle, so 100 percent from nine people does not outrank 96 percent from ninety thousand. Length comes from HowLongToBeat where it can be matched, measured against a per-genre floor so a five-hour narrative game is judged against other narrative games rather than against a sixty-hour RPG. Where no verified length exists the score says so and carries a dock, because the biggest input is then a guess. The full method, including where it is weak → Steam reviews as of Sep 12, price as of Sep 24.
A number here look wrong? Tell me what it got wrong and I will look at the inputs behind it.