#Japan #Setagaya, Tokyo #Tumbleweed #Langue de Chat #Online Puzzles

Tumbleweed and Langue de Chat Join Forces in a New Strategic Partnership

In an exciting development for puzzle enthusiasts, Tumbleweed, an experiential puzzle-solving brand managed by Green Dice Co. based in Setagaya, Tokyo, has entered into a strategic partnership with Langue de Chat, a company specializing in puzzle technology based in Shibuya, Tokyo. This collaboration, effective from July 1, 2026, aims to jointly develop and expand their online puzzle gaming venture, known as "Puzzle Games Online."

Unlocking New Puzzle Experiences

The platform, "Puzzle Games Online," allows users to purchase and manage various puzzle content accessible via smartphones and PCs, offering an authentic puzzle-solving experience from the comfort of their homes. The partnership leverages Tumbleweed’s extensive experience in puzzle event production and management and combines it with Langue de Chat's technical expertise to enhance the service offerings and content variety available to users.

Since its inception in 2016, Tumbleweed has built its reputation on providing unique, one-time-only puzzle experiences, having produced over 123 events and selling more than 250,000 takeaway puzzle kits, attracting approximately 1,000 visitors weekly. The company has also launched a fan club, "Tumbleweed Puzzle Club," in August 2022, delivering exclusive online puzzle experiences.

In April 2025, Tumbleweed introduced the "Puzzle Games Online" service, paving the way for easily accessible puzzle-solving adventures beyond traditional real-world events.

Meanwhile, Langue de Chat has played a crucial role in the technological aspects of various online services offered by Tumbleweed, including the development of the Puzzle Club and ongoing system maintenance for the online gaming platform.

Through nearly four years of collaboration, Tumbleweed and Langue de Chat have shared insights into puzzle experience design and operational management, solidifying their relationship. Now, with this partnership, they aim to further enrich the online puzzle experience for a broader audience.

Partnership Details

Each company will leverage its strengths to promote the online puzzle business collaboratively. The roles are divided as follows:

• - Green Dice Co. (Tumbleweed):

- Planning and producing puzzle content
- Operating and promoting services
- Planning and launching online events

• - Langue de Chat:

- Designing and developing service systems
- Maintenance and functionality improvements
- Researching and developing new services and features

About “Puzzle Games Online”

"Puzzle Games Online" offers a flexible puzzle-solving experience available anytime and anywhere via mobile devices and PCs. Users can choose from a variety of content, including quickly playable games and online event formats. The service encourages live broadcasts and interactive gameplay experiences, where players and viewers can participate together, facilitating a new form of online engagement.

Since its launch, the service has garnered substantial user interest, with popular titles such as "ONE OPERATION" being played by over 4,000 users. Additionally, the latest release, "Mystery Soaked: Special Edition," surpassed 2,000 copies within just ten days of its debut in June 2026, showcasing the positive reception from the audience.

Through this strategic partnership, Tumbleweed and Langue de Chat aim to enhance service infrastructure, develop new features, and introduce innovative content, striving to create a richer platform that attracts even more users.

Future Prospects

Both companies have ambitious plans for the future, including:

• - Expanding exclusive online puzzle content
• - Developing new online event formats
• - Strengthening collaborations with puzzle creators
• - Introducing coordinated online initiatives linked to real-world events

This strategy seeks to promote further advancements in the online puzzle market.

Comments from the Executives

Atsushi Saito, CEO of Green Dice Co. (Tumbleweed):
"We are thrilled to announce our partnership with Langue de Chat for the Puzzle Games Online project. We have collaborated prior to the project’s inception and believe that combining our strengths will allow us to deliver innovative and high-quality puzzle experiences, meeting the growing demand for online entertainment. This partnership will create new value in the market and deliver exciting experiences to our users."

Hiroaki Hosono, Representative at Langue de Chat:
"Having been the development partner for Tumbleweed's projects over the past four years, we look forward to evolving our collaboration into a business partnership that merges our insights on content and systems. We aim to create unique puzzle experiences that can only be realized in an online setting, ensuring a long-lasting engagement with our audience."

Company Overview

Green Dice Co.

• - Location: 2-16-2 Kitazawa, Setagaya, Tokyo
• - CEO: Atsushi Saito
• - Business: Planning and operation of the experiential puzzle game brand “Tumbleweed.”
• - Website: tumbleweed.jp

Langue de Chat

• - Location: 3-1-9 Shibuya, Shibuya, Tokyo
• - Representative: Hiroaki Hosono
• - Business: Development and operation of web services within the puzzle and mystery genre; systems for entertainment companies including “Puzzle Club”; and operating its label LogicPuzzle.App, among others.
• - Website: langue-de-chat.llc

Contact Information for Inquiries

Public Relations Department, Green Dice Co.

• - Email: [email protected]

Together, Tumbleweed and Langue de Chat are set to unlock new dimensions in the world of online puzzle experiences, ensuring a brighter future for puzzle enthusiasts everywhere.