Product Research & Development Department (プロダクト研究開発部) was a continuation of Mechatro, continuing to play the same role in manufacturing arcade cabinets and not the arcade software, such as the UFO Catcher series. It became R&D4, during the structure of May 2010 to March 2015. During the March 2015 restructure in turned into Sega Interactive Product R&D.
Sega R&D4 entered the gaming scene in 1987 and has 1 titles tracked on PlayPile. Their catalog focuses on Adventure and Hack and slash/Beat 'em up. Their games are available on Sega Master System/Mark III.