The Cryptanalyst: Case 1 is a game that has to do with decoding items. This current iteration is the first case, which has to do with someone who's gone missing. You've been sent Journal entries, that have been, for some reason, encoded and that need to be decoded asap. When you download the zip file, for this game, you'll get the Introduction, rules, 21 encoded Journal entries, and the two endings (all in their own notepad files).