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Castle Idler

IncrementalTower DefenseCasualStrategyArcade79% positive on Steam
Soy Boy GamesReleased 24 Apr 2026
3 active offers across 3 stores

All offers (3)

Compare the platform, region and delivery before you buy.

Standard Edition 3 offers · EU & Global

  • castle idler Steam Key (PC) GLOBALActivation key
    SteamGlobal
    Lowest price€1.67+ fee possible
    View deal
  • castle idler PC Steam CD KeyActivation key
    SteamGlobal
    €2.31+ payment fee
    View deal
  • castle idler (Global) (PC / Mac) - Steam - Digital KeyActivation key
    SteamGlobal
    €2.67no Plus, no Protect
    View deal

Official store Steam · price for Germany

  • Steam store pageDirect purchase
    SteamGermany
    €3.99No fee
    View on Steam

You buy directly from the store. "+ service fee" or "+ payment fee" means the store adds a fee at checkout; you see the final price there before you pay. We may earn a commission when you buy through our links.

Best price over the last 32 days

€4.00€3.00€2.00€1.0011 Oct 202611 Nov 2026
  • Lowest €1.678 Nov 2026
  • Highest €2.9911 Oct 2026
  • Today €1.67

The cheapest EU or Global key per day across all compared stores; the dashed line is the Steam price.

Buy Castle Idler key: current price comparison

Where is the Castle Idler key cheapest?

The cheapest Castle Idler key that activates in the EU currently costs €1.67 at Eneba. Keyfinder compares 3 offers from 3 shops for this price. That is 58% less than the Steam price of €3.99. Prices are refreshed hourly; region, edition and any checkout fees are shown on each offer.

What was the lowest Castle Idler key price in the last 32 days?

€1.67 on 8 Nov 2026, for the standard edition that activates in the EU. The highest daily low in that time was €2.99 on 11 Oct 2026; today the cheapest key costs €1.67.

Which Castle Idler keys activate in the EU?

3 offers are marked EU or Global and activate in Germany and the rest of the EU. Keys for other regions are listed separately. The keys on offer are for Steam.

What a game key is and how to read an offer

How do I activate the Castle Idler key?

The cheapest key activates on Steam. You redeem it there with the code the shop sends you after you pay.

How to redeem a Steam key

Is it safe to buy a Castle Idler key from Eneba?

Before you pay, check three things on the offer: the region (EU or Global for Germany), the edition and any fee added at checkout. Keyfinder shows all three on every offer. Our Eneba check covers who runs the shop, its fees and its regions.

Is Eneba legit? Read our check

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About 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.

Developer
Soy Boy Games
Publisher
Soy Boy Games
Release date
24 Apr 2026
Steam
View on Steam