SegaNET Mahjong MJ and Sumasuro Bakemonogatari Launch Collaboration Tournament
Sega has started a collaboration event between its online mahjong game SegaNET Mahjong MJ and the mobile puzzle game Sumasuro Bakemonogatari. The Sumasuro Bakemonogatari CUP national tournament runs from July 13 to August 2, 2026, across app and arcade versions, with collaboration items including characters, backgrounds, and win animations as rewards.