
Beat the Devil at his own game. The Killing Stone is a deckbuilding card battler wrapped in a 17th century folk horror narrative. Clean the sins of a cursed family by bargaining against a series of demons - and outwitting the Devil himself.
Complete checkout — your code lands in your inbox in ~30 seconds, and is always available under Orders in your Gameplug account.
In the desktop client: top-left menu "Games" → "Activate a Product on Steam…" (or use the web link below).
Paste the key (format XXXXX-XXXXX-XXXXX) and accept the Steam Subscriber Agreement.
The game joins your library permanently — install it on any machine you sign in to.
Code not working? Contact support — confirmed-invalid codes are replaced or refunded.