Steam
BestOfficialIn stockThey Are Billions · Region US · Jul 15
$26.99
was $29.99 · −10%
They Are Billions
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?
OfficialJun 18, 2019 · Numantian GamesStrategyFamily SharingIncludes level editorRemote Play on TabletSingle-playerWindows
Current best
$26.99
at Steam · Jul 15
All-time low
$22.49
Jul 5, 2026
Stores tracked
2
sources indexed
Review signal
85%
51,150 reviews
Current best · Steam
$26.99$29.99−10%
Observed Jul 15
View best listingObserved low target
$22.49 · based on the previous indexed low
KeyDwarf only tracks observations — checkout happens on the store.
Tracked Stores
Best indexed price $26.99 at Steam.
2/2
View listing
GOG
OfficialIn stockThey Are Billions · Region US · Jul 5
$29.99
How trust is scored: KeyDwarf combines source type, known retailer posture, marketplace risk, activation-region warnings, and source transparency. Checkout and support still happen with the external seller.
Price History
3 observationsBest observed priceAll-time low
All-time low
$22.49
Jul 5, 2026 · Steam
12-week avg
$26.49
3 recent observations
Current vs low
+20%
Current $26.99
Recommendation
Fair indexed price
not far from the low
Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.
Media
12 indexedCommon Questions
Where is They Are Billions cheapest right now?
They Are Billions is currently indexed at $26.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.
What is the historical low for They Are Billions?
The indexed low for They Are Billions is $22.49 from Steam, observed Jul 5, 2026. The current indexed price is 20% above that low, so KeyDwarf labels it "Fair indexed price".
Is the top source safe?
Steam is labeled "Official store" in the index. KeyDwarf tracks the listing and source risk, but checkout and support stay with the external store.
What is the review signal?
They Are Billions has a best indexed review signal of 85%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.