Higurashi no Naku Koro ni Matsuri Official Complete Guide (ひぐらしのなく頃に祭公式コンペリートガイド When the Cicadas Cry Festival Official Complete Guide) is a supplementary guidebook published by Kadokawa for Higurashi no Naku Koro ni Matsuri, the PS2 adaptation of Higurashi no Naku Koro ni.
- Concept art of characters and backgrounds
- Dictionary for various terms used throughout the story
- An interview with Ryukishi07, Kanou Kiichi and other staff.
- A short story Nashikuzushi-hen written by Kanou Kiichi.
This is only a partial gallery with select images from the book. Contains spoilers.