Don't Know What You're Assembling Until It's Done!? German "Brain-Stimulating" New Sensation Jigsaw Puzzle "Black Box Puzzle" Lands in Japan for the First Time!

TKD Bros Inc. (Taito-ku, Tokyo), which introduces unique overseas games, puzzles, and lifestyle products to Japan, will be the first in Japan to pre-sell "Black Box Puzzle," planned, manufactured, and sold by German game maker MiSu Games, on Makuake, a crowdfunding service for new products and experiences, starting June 25, 2026 (Thu).

Sales Period: June 25, 2026 (Thu) - August 7, 2026 (Fri)

Product Page: https://www.makuake.com/project/blackboxpuzzle/

Reservations accepted with up to 39% off.

✅【Don't Know What You'll Make】A new sensation jigsaw puzzle where you assemble pieces without a picture of the finished product. ✅【Immersive Experience】Lose track of time and get absorbed! A fun analog experience for digital detox.

✅【Recommended by a Neuroscientist】Endorsed by popular neuroscientist Dr. Kikunori Shinohara, who has made numerous TV appearances.

【Product Features】

"I don't know what I'm assembling."

Unlike traditional jigsaw puzzles where you assemble while looking at the finished picture, Black Box Puzzle is a rare 1000-piece jigsaw puzzle in the world where you don't know what picture will be completed until it's done.

Players are given only a "theme" and "difficulty level." By gradually assembling the pieces using colors and patterns as clues,

"Could it be...?"

"So this was the picture!"

You'll approach completion while experiencing surprise and discovery many times over. It's a new puzzle experience that allows you to enjoy the excitement of deduction and the catharsis of completion simultaneously, in addition to the sense of accomplishment of a traditional jigsaw puzzle.

Furthermore, this product has received the recommendation of neuroscientist Dr. Kikunori Shinohara, known for his appearances and supervision on numerous TV and radio programs such as "Quiz! Brain Bell Show" and "Konya wa Nazotore" (Fuji TV).

Dr. Shinohara evaluates the product's characteristic of assembling while imagining the whole from parts without a finished picture as a new puzzle experience that stimulates brain functions related to "spatial cognition," "imagination/creativity," and "thinking skills," as summarized below.

The themes are "Gradation," "Fantasy," and "Cityscape."

Each offers different difficulty levels and worlds, allowing you to enjoy a challenge that suits you.

In addition, with a commitment to quality unique to Germany, such as high-density blue board and precise cutting technology, it achieves a comfortable play feel where pieces naturally fit together even without a finished picture.

In an era where time spent looking at smartphones and computers is increasing, it is also attracting attention as an "analog hobby for adults" where you can step away from the screen and get absorbed, losing track of time.

【Product Specifications】

Product Name: Black Box Puzzle

Contents: 1000-piece jigsaw puzzle

Finished Size: Approx. 50cm x 70cm

Package Size: Approx. 16cm x 16cm x 16cm

Weight: Approx. 720g

Material: High-density blue board

Country of Manufacture: Germany

【Makuake Pre-order Acceptance Starts】

"Black Box Puzzle" will begin accepting reservations in a project format on Makuake.

[▶] Makuake Project Page URL https://www.makuake.com/project/blackboxpuzzle/

[▶] Project Execution Period Scheduled to start June 25, 2026 (Thu) 10:00 - End August 6, 2026 (Thu) 22:00

[▶] Early Bird Benefits on Makuake We are offering early bird discounts of up to 39% off on the Makuake project page.

[▶] What is Makuake

Makuake, Inc. operates a crowdfunding service for new products and experiences with the vision of "realizing a world where things that should be born are born, things that should spread are spread, and things that should remain remain." Through partnerships with over 100 financial institutions nationwide, it is utilized by businesses across Japan, and through collaboration with domestic and international distribution partners, it supports businesses to expand even after the project ends.

Makuake, Inc. operates a crowdfunding service for new products and experiences with the vision of "realizing a world where things that should be born are born, things that should spread are spread, and things that should remain remain." Through partnerships with over 100 financial institutions nationwide, it is utilized by businesses across Japan, and through collaboration with domestic and international distribution partners, it supports businesses to expand even after the project ends.

【Product Introduction PV】