I am not really sure if the Physical game part is to sell it real game in the real world. But I think it is like to sell it files and people print it in home. I never printed a board to play really or a game book. Like AD&D now D&D. But well you have to check it yourself.
Anyway exist Amazon (I have a adult comic in Kindle) and Ebay (I just got a U$5 discount coupon last day) too. I just don't like Amazon to much because they charge for a import tax for book to Brasil that do not exist. Books are one of the things free of import taxes in Brasil.