A geeky collection of papers on games and puzzles. My favourite pieces include "The Nature of Puzzles" and "Embed the Rules" by Cameron Browne, "Defining the Abstract" by Mark Thompson, and "Heptalion" by Néstor Romeral Andrés. Every paper is delightful to read though, teaching us something new about game and puzzle design. As such, I think this journal is a real gem. Sadly, it is no longer running, but I trust the published issues have plenty to offer within them.