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Compare game prices. Buy Castle Must Be Mine PC in retail box or cd key. Activate Castle Must Be Mine on official platforms such as Steam. Castle Must Be Mine cheapest price.
Castle Must Be Mine
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Use your CD key on Steam to download your game.
Castle Must Be Mine
For Steam CD Keys, you must download (HERE), install the Steam software and create a new account. If you already have a Steam account, once you log in, click "Add a game" (located in the bottom left corner), and then "Activate a Product on Steam". After a few more clicks, you will be prompted to type in your game code. Thus, the game will be activated and automatically added to your account library.