Experiences are the Mysterious Package Company's primary product. They are immersive stories told over a series of mailings to the recipient. Each experience contains these core elements:
-Documents and other media
-An element of personalization or customization
-Puzzles or mysteries to solve
-An artifact related to the details of the story, usually in a nailed-shut wooden crate
-A Reveal card identifying who sent the package(s), if they were a gift
Members purchase packages that they send to themselves or a recipient of their choice. The experiences feature genres such as mystery, horror, adventure, time-travel, and science-fiction, and range in duration from 1 to 6 mailings.