Merchandise
Various merchandise based on the series has been released in Japan. The 253-page 1995 novel Gouketsuji Ichizoku: The Novel (ISBN 978-4-8470-3158-8) was published by Wani Books in 1995. It relates the history of the Goketsuji family and features some art made by Range Murata. Gouketsuji Ichizoku: THE CD-ROM was published in 1998 by Toshiba EMI and contains information about the series including characters profiles, correlation diagrams, the family lineage, concept art, sounds and other artwork. It also has desktop wallpapers and screen savers.
Soundtracks to the first five games in the series were also released. Pony Canyon/Scitron released the first four, while Noise Factory released the Matrimelee soundtrack. In 2005, Noise Factory released a box set of all soundtracks to the first five games in the series, along with a 2005 calendar featuring art from the. Unlike the original releases, the CDs in the box art do not include the sound effects collections and the Groove on Fight's CD has the arranged tracks from the Sega Saturn.
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