Sony Music Entertainment Japan has agreed to acquire a 23.29% stake in Puzzle & Dragons developer GungHo Online Entertainment for 28.635 billion yen, or approximately $178.7 million, according to corporate disclosures. The off-market transaction with primary shareholder SON Financial values each share at 2,385 yen, with the completion date scheduled for December 30, 2026, pending necessary regulatory approvals.
Financial Structure and Corporate Ownership Details
According to official filings, the acquisition will establish Sony Music Entertainment Japan as the single largest shareholder in GungHo Online Entertainment. Upon completion of the deal, GungHo will operate as an affiliated company of Sony Music Entertainment Japan, while parent entity Sony Group Corporation will also be designated as an affiliated corporate entity under the new ownership structure.
Despite the significant equity shift, GungHo is set to retain its administrative independence as a publicly traded entity listed on the Prime Market of the Tokyo Stock Exchange. Neither company has announced plans to integrate GungHo directly into Sony’s internal corporate hierarchy, allowing the developer to maintain its current management framework.
Commercial Alliance and Intellectual Property Strategy
Alongside the equity purchase, both companies have established a formal capital and commercial alliance agreement. According to the joint corporate announcement, the partnership will focus on several collaborative initiatives:

- Joint development and operation of mobile, console, and personal computer video games distributed by GungHo Online Entertainment.
- Promotion of collaborative cross-promotional campaigns for existing GungHo titles.
- Exploration of fresh gaming projects that leverage intellectual property belonging to Sony Music Entertainment Japan, its subsidiaries, and its affiliates.
Broader Corporate Investments in Japanese Entertainment
The GungHo transaction mirrors a broader consolidation strategy by Sony within the Japanese entertainment and gaming sector. In a related partnership announced in July 2025, Sony acquired a 2.5% stake in Bandai Namco Holdings through the purchase of 16 million shares, according to reporting by IGN Italia and announcements tracked by Gematsu.

Sony Chief Strategy Officer Toshimoto Mitomo stated in a joint release covered by IGN Italia that the company aims to co-create content that exceeds audience expectations by uniting forces with Bandai Namco. This portfolio of minority stakes and strategic investments includes a 10.11% holding in Kadokawa, a 14.09% stake in FromSoftware, a 5% share in Devolver Digital, a 4.9% investment in Epic Games, and a 4.98% position in Chinese publisher Bilibili, as detailed by IGN Italia.