Steam
BestOfficialIn stockQuantum Protocol · Region US · Jul 13
$12.99
Quantum Protocol
A deckbuilding card game where it's always your turn. Play as the master hackers of Quantum and take on the most dangerous malware in the world. Every action matters. Make plays, upgrade your deck, and break the enemy board!
OfficialNov 4, 2020 · Kaio MerisStrategyFamily SharingSingle-playerSteam AchievementsSteam CloudWindows
Current best
$12.99
at Steam · Jul 13
All-time low
$9.09
Jul 8, 2026
Stores tracked
1
sources indexed
Review signal
91%
654 reviews
Current best · Steam
$12.99
Observed Jul 13
View best listingObserved low target
$9.09 · based on the previous indexed low
KeyDwarf only tracks observations — checkout happens on the store.
Tracked Stores
Best indexed price $12.99 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
2 observationsBest observed priceAll-time low
All-time low
$9.09
Jul 8, 2026 · Steam
12-week avg
$11.04
2 recent observations
Current vs low
+43%
Current $12.99
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 Quantum Protocol cheapest right now?
Quantum Protocol is currently indexed at $12.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.
What is the historical low for Quantum Protocol?
The indexed low for Quantum Protocol is $9.09 from Steam, observed Jul 8, 2026. The current indexed price is 43% 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?
Quantum Protocol has a best indexed review signal of 91%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.