There are too few mail-order role-playing games, and even fewer that are really effective or bring something to the table; Epistolary is one of them! First because it is played by more than two people, then because it is an investigation game, and finally because it talks about the coming apocalypse and this one is emulated by the dwindling stamps : when nobody has any more, the game is over. There are other little pieces that don't work as well (especially those with a resolution table), but overall it's a pretty good little game!