Steam
BestOfficialIn stockcastle idler · Region US · Aug 3
$3.99
castle idler
castle idler is a short, relaxing incremental tower defense game with no waves. upgrade towers, collect coins, and unlock powerful prestige upgrades to defend your castle.
OfficialApr 24, 2026 · Soy Boy GamesCasualStrategyCustom Volume ControlsFamily SharingMouse Only OptionWindows · Mac
Current best
$3.99
at Steam · Aug 3
All-time low
$2.99
Jul 17, 2026
Stores tracked
1
sources indexed
Review signal
81%
151 reviews
Current best · Steam
$3.99
Observed Aug 3
View best listingObserved low target
$2.99 · based on the previous indexed low
KeyDwarf only tracks observations — checkout happens on the store.
Tracked Stores
Best indexed price $3.99 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
$2.99
Jul 17, 2026 · Steam
12-week avg
$3.49
2 recent observations
Current vs low
+33%
Current $3.99
Recommendation
Fair indexed price
not far from the low
Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.
Media
11 indexedCommon Questions
Where is castle idler cheapest right now?
castle idler is currently indexed at $3.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.
What is the historical low for castle idler?
The indexed low for castle idler is $2.99 from Steam, observed Jul 17, 2026. The current indexed price is 33% 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?
castle idler has a best indexed review signal of 81%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.