SteamBestHistoric Low$29.99
Real Time Strategy (RTS)Role-playing (RPG)Strategy
They Are Billions — Best Price & Deals
3.7
Developer: Numantian Games
Publisher: Numantian Games, BlitWorks
Released: June 18, 2019
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Skip They Are Billions for now — ThereAny Score 18/100, currently 33% above its all-time low.
Our take
Next major sale: Autumn Sale in 41 days
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?
They Are Billions has 2 active deals across Steam, GOG. The current lowest price is $29.99 on Steam — a 0% discount off the $29.99 retail price. Historical low: $29.99 (Aug 19, 2026). Compare prices on Steam, Epic Games Store, GOG, Fanatical, and more major PC game retailers below.
Historic Low  GOG | $29.99 | $29.99 | — | View Deal |