The Innsmouth Papers is a Lovecraftian letter-larp: a roleplaying game of Lovecraftian horror which you play by writing letters to one another. Together you will tell stories of investigation, exploration, unease, horror, and madness. At the end of it all, you will have a collection of letters as a physical reminder of this story.
This book includes advice on safety and improvising content, as well as simple rules for character creation and writing letters aimed at producing Lovecraftian stories.
You will need at least two participants, and if you have more than two, someone to act as postmaster, a coordinator who sets up initial contact lists, manages safety, sets expectations, and optionally introduces new elements when things seem to be fading.
This is a companion discussion topic for the original entry at https://rpg-trader.com/products/217/the-innsmouth-papers