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Your Thronebreaker goodies can be found below:
Official Thronebreaker Soundtrack
Concept art, including the map of Lyria
Digital version of GWENT: Art of The WItcher Card Gameartbook from Dark Horse Code: 2UHXNZJY
The Witcher graphic novel “Fox Children” by Dark Horse Code: 2FG78M9S
In-game items are automatically added to your GWENT collection on the account associated with your Thronebreaker copy.
Have fun!