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Designed specifically to be played through the mail/post, AdventureByMail games have two players using regular playing cards as prompts as they write and send correspondences as spies, vampires, interstellar explorers, and more. Both you and your partner will need a copy of the rules (no need to purchase twice, just send the pdf to the other player), a six-sided die, a deck of regular playing cards, paper, postage, and envelopes.  But players do not draw prompts from their own deck.