Steam
BestOfficialIn stockPromethium · Region US · Jul 27
$7.99
Promethium
Inspired by classic Commodore 64 and arcade games, Promethium is a hard-as-nails retro inspired side-scrolling shoot-em-up that takes place over numerous levels that get harder and harder. If you’re after a nice calm casual game this isn’t it!
OfficialAug 18, 2017 · Xiotex Studios LtdActionIndieFamily SharingFull controller supportSingle-playerWindows · Mac
Current best
$7.99
at Steam · Jul 27
All-time low
$3.99
Jul 15, 2026
Stores tracked
1
sources indexed
Review signal
67%
24 reviews
Current best · Steam
$7.99
Observed Jul 27
View best listingObserved low target
$3.99 · based on the previous indexed low
KeyDwarf only tracks observations — checkout happens on the store.
Tracked Stores
Best indexed price $7.99 at Steam.
1/1
View listing
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
$3.99
Jul 15, 2026 · Steam
12-week avg
$6.66
3 recent observations
Current vs low
+100%
Current $7.99
Recommendation
Watch for drop
consider setting an alert
Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.
Media
12 indexedCommon Questions
Where is Promethium cheapest right now?
Promethium is currently indexed at $7.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.
What is the historical low for Promethium?
The indexed low for Promethium is $3.99 from Steam, observed Jul 15, 2026. The current indexed price is 100% above that low, so KeyDwarf labels it "Watch for drop".
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?
Promethium has a best indexed review signal of 67%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.