Sega Opens 108 Free Seats for Mahjong MJ Event at Osaki Headquarters
Sega will hold an official offline event for its online mahjong game Sega NET Mahjong MJ at the Sega Osaki Headquarters in Tokyo on Saturday, December 26, 2026, from 13:00 to 19:00.
1 source 41m ago
Reporting from 1 source: 4Gamer.net.
Why it matters
Sega is capping attendance at 108 free seats and taking applications for under two weeks, which keeps the event small and puts a US-style convention draw inside a corporate headquarters instead of a public hall.
Key Facts
- Sega NET Mahjong MJ's official offline event takes place at Sega Osaki Headquarters in Tokyo on Saturday, December 26, 2026.
- The event runs from 13:00 to 19:00, with doors opening at 12:00.
- Twelve professional mahjong players will appear as guests and play against users on MJ Mobile.
- Participation is free and planned for 108 people.
- Applications close at 23:59 on Monday, November 16, 2026.
Twelve professional mahjong players will appear as guests and play against attendees on MJ Mobile. Participation is free and limited to 108 people, with applications accepted through Monday, November 16.
The event runs from 13:00 to 19:00, with doors opening at 12:00, at the Sumitomo Fudosan Osaki Garden Tower in Nishi-Shinagawa, Shinagawa-ku, a six-minute walk from JR Osaki Station's New West Exit. Attendees and the twelve guest professionals play directly against each other on MJ Mobile, Sega's mobile version of the game. Applications close at 23:59 on Monday, November 16, and the participation fee is free.
- Seiichi Kondo: Professional mahjong player, guest
- Ken Sonoda: Professional mahjong player, guest
- Doki Asai: Professional mahjong player, guest
- Emu Aikawa: Professional mahjong player, guest
- Naoya Kono: Professional mahjong player, guest
- Momo Matsushima: Professional mahjong player, guest
- Akihiro Shiozawa: Professional mahjong player, guest
- Risako Kaji: Professional mahjong player, guest
- Hanana Uematsu: Professional mahjong player, guest
- Ai Yamamoto: Professional mahjong player, guest
- Shoa Saito: Professional mahjong player, guest
- Miyu Nogi: Professional mahjong player, guest
Written with AI by Yomimono from the 1 cited source below, including Japanese-language reporting where cited. See our editorial policy.
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Sources
- 4Gamer.net 「セガNET麻雀 MJ」,公式オフイベントを12月26日にセガ本社で開催