The Moon Particle is a ten card game series. In the pack are a series of 'first drafts' of a children's story written by Sir Jacob Lester. Each card has a set of puzzles on it - one indicates the order that the cards should be placed, and the other how to extract a hidden ten letter message from that order.
This can be played separately to the main Notable remains game, and is designed to be highly portable, and perfect for solo play.
Also included is an introductory guide for how to play. Hints for the game can be found on the link below.