Play, Learn, and Protect Nature: The Popular Educational Card Game 'LineUP' Launches the 'LNT Add-on Package' on June 18, Teaching Outdoor Ethics Through Fun

Background and Overview Leave No Trace Japan (hereinafter 'LNTJ') announces the release of the 'LNT Add-on Package' on Thursday, June 18, 2026. This new series expands the popular card game 'Line UP,' which challenges players to correctly order numerical facts about nature, culture, space, and other fascinating Earth-related trivia. The package is the long-awaited collaboration between 'LineUP,' developed by the creative unit 'infoplay' that designs playful learning experiences, and LNTJ. The illustrations are created by Tomoaki Mukai, known for his iconic visuals for LNTJ. Comprising 12 cards featuring numbers related to the 7 principles of Leave No Trace (LNT), this package helps players naturally develop awareness of outdoor ethics and environmental protection through play. Additionally, KEEN, the outdoor footwear brand that has defined 'any place without a ceiling' as the outdoors since its founding in 2003 and promotes innovative products with reduced environmental impact, has deeply endorsed the project's mission. As the special partner for the first LineUP collaboration package, KEEN has supported the development and launch of this product. Sales begin today. What is 'LineUP'? A Deep and Engaging Number Game That Sparks Conversations About Nature With a familiar touch—'Hey, where have I seen this illustration before?'—the game features approachable artwork by Tomoaki Mukai, a familiar name to LNTJ supporters. Despite its simple rules, 'LineUP' delivers a memorable 'Aha!' experience for both adults and children. Simple Rules, Surprising Numbers, and 'Aha!' Moments The gameplay is straightforward: predict the correct numerical value and arrange the cards in the right order. Yet each number is filled with unexpected surprises. Deepen Your Outdoor Knowledge Through Play Various outdoor-related figures and their contexts are naturally absorbed through gameplay. Learning these facts changes the way you see nature, enriching your next outdoor experience. A Communication Tool That Naturally Sparks Conversations Beyond winning or losing, every time a card's number or explanation is revealed, conversations naturally spark among outdoor enthusiasts: 'Wow, really?' 'Actually, this means...' Recommended Use Cases - During breaks in school camping trips or nature school programs - As evening recreation during camping trips - On rainy days, during relaxed time in tents or mountain huts - As an introduction to LNT (Leave No Trace) workshops or instructor courses Message from Creative Unit 'infoplay' We are excited to introduce a new 'LineUP' that allows players to engage with the 7 LNT principles through play. We believe outdoor activities and games align well with the curiosity and exploratory spirit of nature lovers. One of the game's charms is how the numbers on the cards serve as clues, naturally connecting LNT's guidelines to real outdoor situations. We are delighted to have worked with KEEN to create an accessible entry point to the spirit of LNT through this add-on package. We hope this game inspires a growing ethical respect for nature, leading to a future where more people can comfortably coexist with the natural world. HP: https://infoplay.tokyo Tomoaki Mukai (Illustration & Design) Known for works themed around nature and wildlife, Mukai has created the environmental map for Shogakukan's 'Zukan NEO' and visual designs for Kanazawa Zoo in Yokohama City. His publications include 'A Year in the Rice Field,' 'A Year in the Forest,' and 'A Year in the Field' (Shogakukan), and his illustration and design work includes 'Visual Data Book: Creatures of Japan' (Gakken). Special Partner Since its founding, KEEN has defined 'any place without a ceiling' as the outdoors and has acted on the belief that we have a responsibility to protect the places where we live, play, and work. Deeply resonating with LNTJ's approach of 'nature conservation through play,' KEEN has supported the creation of this LNT add-on package for LineUP. Together, let's work toward a future where more people can comfortably coexist with nature through this game. HP: https://www.keenfootwear.jp/ LNT Add-on Package Overview: A set of 12 lineup cards featuring numbers related to the 7 LNT principles. The add-on package can be enjoyed on its own, but when played together with the main 'Line UP⑤ Mountain' package, the fun and mountain-related trivia are doubled. Contents: 12 lineup cards / dedicated add-on card package Price: - LNT Add-on Package (standalone): 1,000 JPY - Line UP⑤ 'Mountain' with LNT Set: 2,500 JPY - Line UP⑤ 'Mountain' (standalone): 1,870 JPY LNT is an outdoor ethics framework originating in the United States, now practiced in 96 countries worldwide. Based on seven core principles, it provides practical techniques to minimize environmental impact while enjoying the outdoors—making it easy and enjoyable for anyone to practice. Leave No Trace Japan, now in its fifth year, has over 1,000 members and is rapidly expanding its recognition, including being featured in Daishukan's physical education textbooks. The organization runs various initiatives, such as municipal collaborations and Spotlight Programs that address local environmental challenges. In 2022, it became the fourth country globally and the first in Asia to be officially recognized as a branch. HP: https://lntj.jp/