SegaNET Mahjong MJ and Sumasuro Bakemonogatari Launch Collaboration Tournament
The event uses Sega's own Bakemonogatari mobile game to drive competitive play in its mahjong title, a standard cross-promotion strategy for live-service games.
Reporting from 1 source: 4Gamer.net.
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.
The Sumasuro Bakemonogatari CUP offers two tournament categories-East Wind Round and Three-Player-with players competing for total score across preliminaries and finals. Rewards include evolutionary SP character (UR) Nadeko Sengoku 3, six table backgrounds, three EX backgrounds, and three win buttons. A separate gacha features five more evolutionary SP characters including Hitagi Senjougahara 3 and Tsubasa Hanekawa 3, along with 69 total collaboration items available for a limited time.
The collaboration runs on both the smartphone/PC app version and the arcade version of SegaNET Mahjong MJ, with the tournament period spanning July 13 to August 2, 2026. Sega is leveraging its own IP portfolio to keep its mahjong player base engaged through seasonal events.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.
Sources
- 4Gamer.net 「セガNET麻雀 MJ」，スマスロ 化物語がコラボ。全国大会も開催中