If you lost your key or didn't receive it, first check your spam folder . If it's not there, you can contact the developer at sales@mediamond.fi or reach out to Jussi Koskela on the official forum to have it resent.
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Without a valid key, you are limited to a small number of hills and cannot play online. Understanding the "Klucz" (Key) & Activation If you lost your key or didn't receive
: While 1.11.3 was a notable release, the current stable version as of early 2026 is Acquisition dsj 4 1113 klucz hot