Mystery solving games and events are being held at various places across Japan.

However, this venue is quite unique — Tokyo’s Imperial Palace. It’s the first time such a game is ever held at the emperor's residence.

The Imperial Household Agency and QuizKnock, a group that promotes the fun side of learning with its quizzes, worked together to craft this special event.

Participants can join the game held at the Imperial Palace East Gardens for free by using their smartphones.

They can scan the questions and solve them as they wander around the palace gardens.

Visitors can learn about the activity and culture of the imperial family by participating in the game.

The game will be available starting March 18, and is scheduled to run for 2 years.