Explore the Ultra-Niche 'Island Trading Cards' with a New Original Game!

Atria LLC (Headquarters: Osaka City, Yodogawa Ward; Representative Members: Satoshi Hamasaki, Touma Tagami), which operates the island-specialty media "Hanarejima Public Relations," has collaborated with "Map Design GALLERY," a brand operated by Zenrin Co., Ltd. (Headquarters: Kitakyushu City, Fukuoka Prefecture; President: Michio Takekawa) that sells stationery and miscellaneous goods designed with maps.

As a joint initiative leveraging the strengths of both parties, we are pleased to announce the production of a rulebook for "Map Design GALLERY CARD/Inhabited Islands," a trading card series specializing in remote islands, which will be distributed starting July 3, 2026 (Fri).

Rulebook Produced for "Shimac Jack," a Game Devised by Hanarejima Public Relations

The collaboration between the two entities has resulted in the creation of the rulebook for "Shimac Jack," an original game devised by Hanarejima Public Relations that can be played using "Map Design GALLERY CARD/Inhabited Islands."

"Shimac Jack" is a "Island Blackjack" where players aim to get as close as possible to "417," the number of inhabited islands in Japan, by guessing the population density depicted on each card. Players can analyze the topography or leave it to luck. It's a game that can be easily enjoyed by both island enthusiasts and beginners.

The rulebook will be included with the target product, and a web version can also be viewed from the article.

"Shimac Jack" Web Rulebook

Furthermore, Hanarejima Public Relations is sharing new ways to enjoy island trading cards, including publishing an article about playing "Shimac Jack" with the Zenrin team. Please enjoy the report on the heated battles in the article.

▲ (Related Article) Heated! We Played the Original Game with the Developers of Island Trading Cards

▲ (Related Article) Too Niche! An Interview with the Developer of Island Trading Cards

About "Map Design GALLERY CARD/Inhabited Islands"

This is a trading card series themed around inhabited remote islands across Japan. The front of the card features basic information such as area and population, in addition to the island's map. The back has a silhouette design that highlights the island's shape, allowing you to fully appreciate the island's topography from both sides.

Since the first series was released in July 2025, the "Map Design GALLERY CARD/Inhabited Islands" series has gained support primarily from map enthusiasts and travel lovers, surpassing a cumulative sales of 180,000 cards by the end of May 2026. With the release of the fourth series in July 2026, the cards will cover 304 islands, including Okinawa, Amami, and Ogasawara, in areas designated for remote island promotion (excluding Iwo Jima and Minami Torishima).

Rulebook Distribution

This rulebook will be distributed for free with packs of "Map Design GALLERY CARD/Inhabited Islands" starting from the release date of the fourth series, July 3, 2026 (Fri). Purchases made at the Map Design GALLERY online store and physical stores are eligible. Distribution will end once supplies run out.

Condition: Distributed free of charge to customers who purchase the "Map Design GALLERY CARD/Inhabited Islands" series (packs, complete boxes, set products).

Inclusion Period on Online Store: July 3, 2026 (Fri) - July 10, 2026 (Fri)

Eligible Stores: Map Design GALLERY online store and physical stores

End Condition: Distribution ends when supplies run out.

* Inclusion conditions and stock status are subject to change without notice.

"Map Design GALLERY"

Increase Opportunities to Engage with Islands Through "Island Trading Cards"!

Remote islands offer numerous fascinating aspects, including geography, nature, culture, lifestyle, and history. We have created this game as a new point of contact to increase opportunities for people to experience these charms.

In this sense, this collaboration is also an attempt to bring out the fascination of islands not just as knowledge, but as an experience. By combining the single topic of "islands" through different approaches such as maps, design, and games, we expect it to be utilized in a wide range of settings, including homes, event venues, and educational institutions.

Hanarejima Public Relations will continue to create opportunities that bring people closer to islands through new projects and collaborations centered around islands.

About Hanarejima Public Relations

A web media outlet that disseminates information and interview articles useful for island life, focusing on the approximately 400 inhabited remote islands scattered across Japan. Since the project was launched in the spring of 2024 by members who love islands, they have been involved in event planning and collaborations with companies inside and outside the islands, leveraging their experience in island activities.

The core members consist of creators such as writers, designers, and engineers, and their strength lies in their ability to approach the various challenges faced by remote islands from a creative perspective.

- "Hanarejima Public Relations" Top Page

https://hanarejima.com/

- "Hanarejima Public Relations" Official Instagram

https://www.instagram.com/hanarejima_com/

- Related Press Release

https://prtimes.jp/main/html/rd/p/000000009.000117645.html

Operating Company: Atria LLC

About Map Design GALLERY

A brand of stationery and miscellaneous goods designed with maps, developed by Zenrin Co., Ltd. It offers a diverse range of items that allow you to enjoy maps in your daily life, including stationery, bags and fashion accessories, accessory items, tableware and table goods, and interior and daily goods.

Currently, in addition to the online store, stores are located in Kokura, Fukuoka, Nagasaki, and other locations, disseminating new ways to enjoy maps.

- "Map Design GALLERY" Online Store

https://www.mapdesigngallery.com

- "Map Design GALLERY" LINE Official Account

https://lin.ee/DakYXBP

- "Map Design GALLERY" Official Instagram Account

https://www.instagram.com/zenrin_mapdesign/

- "Map Design GALLERY" Official X (formerly Twitter) Account

https://x.com/MapDesign_G

Operating Company: Zenrin Co., Ltd.