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BlueMooner: Do you have to actually install it as steam says, or is just clicking it to your account enough?
PMPMGamer: Just click on button Install and game is added to your account forever. :)
gatolop: Usually with this kind of giveaways it will suffice to add it to your library. You can install it whenever you like after that.
Another soon to expire Fantasy General code from Christmas sale

Expires on 17 January, 2019 at 23:59:59 UTC