Osaki Garden Tower Poker 2026: SEGA SAMMY Headquarters

Osaki Garden Tower is a state-of-the-art skyscraper and a centerpiece of the Nishi-Shinagawa redevelopment in Tokyo. Rising 24 stories, it serves as the prestigious “Grand Harbor” global headquarters for SEGA SAMMY Holdings and major corporations like LIXIL. Beyond its status as a premier office complex, the tower is a versatile venue for large-scale corporate and social events. In the 2026 Tokyo “Mind Sports” circuit, the tower has gained recognition as a sophisticated arena for major non-cash poker festivals, offering professional infrastructure in a high-tech environment that reflects the gaming and entertainment heritage of its primary tenants.

Why Osaki Garden Tower?

• The Hub of SEGA SAMMY: As the headquarters for one of the world’s leading gaming and entertainment groups, the tower embodies a culture of play and competition, making it a natural fit for high-production tournament series.
• Advanced Event Infrastructure: The venue features modern, open-plan spaces and conference facilities engineered for high-capacity logistics, easily accommodating the tables and tech required for massive Mind Sports fields.
• Seamless Transportation: Located just a 6-minute walk from Osaki Station (JR Yamanote, Saikyo, and Rinkai lines), it is exceptionally accessible for local players and international visitors arriving via Haneda Airport.
• The “Grand Harbor” Environment: The tower’s design focuses on a sense of openness and high-end hospitality, providing a professional “Main Event” atmosphere that aligns with international tournament standards.

The Osaki Garden Tower Poker Experience

In the 2026 landscape, Osaki Garden Tower is a key venue for high-stakes “Amusement” poker. While it does not house a permanent card room, its vast event floors are frequently leased by third-party organizers for flagship festivals. These events are strictly non-cash, adhering to Japanese law by awarding sponsorship packages and ranking points. Because of the building’s association with SEGA SAMMY, poker events held here often feature a higher level of technical production, including RFID feature tables and professional live streams.

The venue is particularly noted for its wide corridors and “Grand Harbor” reception areas, which facilitate smooth registration for thousands of players during peak tournament windows. Between sessions, players can enjoy the on-site green spaces and the commercial facilities of the Osaki Garden Residence and nearby Gate City Ohsaki. This makes it a preferred stop for players who value a sophisticated, business-class environment over the more crowded amusement dens of central Shinjuku.

Venue Logistics & Contact

📍 Address: Sumitomo Fudosan Osaki Garden Tower, 1-1-1 Nishi-Shinagawa, Shinagawa-ku, Tokyo 141-0033, Japan .

📞 General Phone: +81 3-6864-2400 (SEGA SAMMY Holdings)

📧 Email: Contact typically via the corporate website’s inquiry form.

📝 Entry & Requirements: Operating hours for events vary (usually 10 AM – 10 PM). Original Photo ID and event QR codes are mandatory for security gate access.