Steam
BestOfficialIn stockMark One · Region US · Jul 8
$0.99
Mark One
Robots built by humans are retaliating. Step in to dispose rogue robots, defeat powerful foes and save the human race in this sci-fi action shooter.
OfficialFeb 17, 2021 · Orfeas EleftheriouActionIndieFamily SharingSingle-playerSteam AchievementsWindows
Current best
$0.99
at Steam · Jul 8
All-time low
$0.99
Jul 8, 2026
Stores tracked
1
sources indexed
Review signal
100%
5 reviews
Current best · Steam
$0.99
Observed Jul 8
View best listingCurrent low target
$0.99 · matches the current indexed low
KeyDwarf only tracks observations — checkout happens on the store.
Tracked Stores
Best indexed price $0.99 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
1 observationsBest observed priceAll-time low
All-time low
$0.99
Jul 8, 2026 · Steam
12-week avg
$0.99
1 recent observations
Current vs low
At low
Current $0.99
Recommendation
At indexed low
current indexed price matches the low
Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.
Media
12 indexedCommon Questions
Where is Mark One cheapest right now?
Mark One is currently indexed at $0.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.
What is the historical low for Mark One?
The indexed low for Mark One is $0.99 from Steam, observed Jul 8, 2026. The current indexed price is at that low, so KeyDwarf labels it "At indexed low".
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?
Mark One has a best indexed review signal of 100%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.