Steam
BestOfficialIn stockSudoku Killer / 杀手数独 · Region US · Jul 16
$2.99
Sudoku Killer / 杀手数独
Killer Sudoku (Sumdoku/Mathdoku/Addoku) puzzles include all the rules of regular Sudoku, but add in dashed-line 'cages', which must sum to given values. This great brain exerciser will provide you many hours of new Sudoku experience and be nice addition to your puzzle collection.
OfficialOct 19, 2018 · KonstructorsCasualIndieStrategyFamily SharingSingle-playerWindows · Mac · Linux
Current best
$2.99
at Steam · Jul 16
All-time low
$0.89
Jul 9, 2026
Stores tracked
1
sources indexed
Review signal
89%
242 reviews
Current best · Steam
$2.99
Observed Jul 16
View best listingObserved low target
$0.89 · based on the previous indexed low
KeyDwarf only tracks observations — checkout happens on the store.
Tracked Stores
Best indexed price $2.99 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
$0.89
Jul 9, 2026 · Steam
12-week avg
$2.29
3 recent observations
Current vs low
+236%
Current $2.99
Recommendation
Watch for drop
consider setting an alert
Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.
Media
10 indexedCommon Questions
Where is Sudoku Killer / 杀手数独 cheapest right now?
Sudoku Killer / 杀手数独 is currently indexed at $2.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.
What is the historical low for Sudoku Killer / 杀手数独?
The indexed low for Sudoku Killer / 杀手数独 is $0.89 from Steam, observed Jul 9, 2026. The current indexed price is 236% 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?
Sudoku Killer / 杀手数独 has a best indexed review signal of 89%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.