
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?
Modeled estimate, not a reported figure. How we estimate →
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Hours played at review time, across 621 reviews with recorded playtime.
Reviews
Themes across 616 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
Waste of time.
Queria muito um jogo no estilo de Age of Empires 2. Esse é o mais próximo que encontrei
Reminds me of my youth, fighting off all da hoez Fun way to pass the time forsure
103 horas, se describe solo, si es verdad que la parte de la campaña es mi favorita pero tiene un problema, las misiones del heroe en solitario, eso lo quitaria, de resto perfecto
万人大饭堂!!
게임 업뎃 안한지 6년됨 완전 유기됨...
可暂停的即时战略游戏
好玩
Easily the best single player campaign RTS zombie survival city builder available. I play once a month or so trying different difficulties on the 5 map 'Biomes' as each map generates a different layout albiet with traits and or trends for each 'map'. This game is immensely fun even after several years i find myself always coming back and trying a new idea, challenge or simply score maxing with each playthrough. The gameplay is polished, the graphics are fine and the zombies make it feel like you are never safe espically on the nightmare density setting. I encourage every person to at least try this difficulty setting as survival definitely won't be assured. I think the interest in zombie style games is when you know survival is possible, but for a select few and its up to you to prove you would or could be one of those few. This game has captured lightning in a bottle when it comes to how fun the zombie waves are and that its balanced fun instead of over the top realism. For example, your soldiers don't miss and given enough skill you can control your scouting units to kite zombies endlessly (not realistic but fun) while balancing noise (bows make less noise than shotguns) realistic, and bullets can go through walls reducinng micro demands or over the top planning (fun). The fact that you cant make save files is what gives this game its replayability. The fragility of your city is what makes you appreciate your progress more and theres simply only yourself to blame if a mutant charges into your new progress point without sufficicent defenses or when a building isnt patrolled properly and a random zombie leads to a base wipe. Theres around 60,000 zombies loaded ontop map 5 and 6 on nightmare difficulty and you start with just 5 troops! The choices are endless which is why in 2026 im still playing this game unlike 105 out of my 110 games ive bought over the past 15 years on steam. After 7 years this game still holds up and my most recent playthrough was both extremely satisfying and annoying as even though i survived on the last map on nightmare density i lost a lot of soldiers and buildinngs and didn't do a Personal Best so next week I'll try again this time hoping for a little bit of luck with the doom village location and mutant placement. 10/10 recommend to all RTS + zombie survival genre fans.
好玩
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Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Audience
Languages: English*, Spanish - Spain, French, German, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, Italian*languages with full audio support
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
Games most often reviewed by the same players — an audience-affinity signal from our review sample, not full ownership data.
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