Koiwai Farm Space Nazotoki Mystery – The Case of A-chan the Cow’s Disappearance

This event is a “Round-the-World Mystery Solving Event” in which participants will solve riddles while touring around the Koiwai Farm Makiba Park. The first 2,000 people to solve all the riddles will receive a limited edition event sticker!
Please give it a try!

Holding period

Saturday, September 6, 2025 – Monday, November 24, 2025

Hours.

9:00-16:00 (last admission)
*The event can be experienced until 17:00, the closing time of the park, but some facilities will close earlier than closing time. Depending on the starting time, you may not be able to visit all facilities. Please understand this in advance.
Milk Hall/closes at 16:30
・Ranch Hall/closes at 16:45
・Gallery of Important Cultural Properties/closes at 16:45

story

One day, Koiwai Farm’s signature cow “A-chan” was kidnapped by aliens. It seems that the aliens left behind many clues in Makiba Park. Help Dr. Kuro solve all the riddles and rescue A-chan from the aliens!

way of playing

Difficulty level / Elementary school students and above. Younger children should try with an adult.

(1) Get a guidebook!
Special guidebooks for the event are available at the entrance. Let’s get it and participate in the event!

(2) Work with Dr. Kuro, the Space Doctor, to solve riddles based on clues left at various locations in Makiba Park!
If you can’t solve it, you can try again on another day!

(3) Clear!
Those who solve all the riddles will receive a limited edition event sticker at counter #5 at the entrance.
Please present the coupon screen on the LINE that says “CLEAR Limited Sticker Present”.