QuizKnock, operated by baton, Inc., has announced that it will hold a puzzle-solving event titled “Professor Layton and the Secret Invitation at Tokyo Dome City,” in collaboration with the “Professor Layton ” series of puzzle-solving adventure games, from Thursday, September 10, 2026, to Sunday, December 20, 2026.
Online ticket sales began on Monday, August 10, 2026.
QuizKnock Collaborates with the “Professor Layton” Series! Puzzle-Solving Event to Be Held at Tokyo Dome City & Online Ticket Sales Begin
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今年も東京ドームシティで
謎解きイベント開催決定!
\#QuizKnock が仕掛けた謎を、レイトン教授とともに解き明かせ!🎩「#レイトン教授と秘密の招待状」は9/10(木)から開催✨
詳細は明日発表予定ですのでお楽しみに!#QuizKnock10周年プロジェクト pic.twitter.com/63Xeaqc90R— レイトン教授と秘密の招待状【QuizKnock】 (@quizknock_tdc) August 9, 2026
QuizKnock and the "Professor Layton" series are teaming up!
Starting Thursday, September 10, 2026, a mystery-solving event will be held at Tokyo Dome City.
- Event Name: Professor Layton and the Secret Invitation at Tokyo Dome City
- Dates: Thursday, September 10, 2026 – Sunday, December 20, 2026
From 2023 to 2025, QuizKnock hosted the puzzle-solving event “Tokyo Discovery City!” at Tokyo Dome City for three consecutive years.
In 2026, as part of QuizKnock’s 10th-anniversary project, a special collaboration with “Professor Layton” will take place.
The event’s key visual is an all-new illustration created by Level-5, Inc., the developer of the Layton series.
It’s a spectacular visual featuring QuizKnock members in their 10th-anniversary project costumes appearing alongside Professor Layton in the same world!
There are a total of four puzzle courses! The puzzles were devised by NazoLock, QuizKnock’s in-house puzzle creation team.
PR TIMESA “secret invitation” arrived in Professor Layton’s mailbox.
The sender was QuizKnock.The streets of Tokyo were abuzz with excitement thanks to the massive number of puzzles set by QuizKnock.
Amidst all this, Professor Layton received a single invitation.
"A secret mystery that no one has solved yet. We’d like you to be the one to solve it."
What is the real reason behind these puzzles?
What is the true nature of the “secret mystery”?
With the invitation in hand, let’s embark on an adventure full of mysteries!
The stage for this mystery-solving adventure is the streets of Tokyo, which are in a festive frenzy thanks to the massive number of puzzles set by QuizKnock.
The story begins when Professor Layton receives a “ secret invitation.”
4 Puzzle-Solving Courses
You can, of course, take your time solving them on your own, but you can also play with friends, family, or other people!
- Izawa & Fukura’s Inspiration Course
- Sugai & Tsurusaki’s Number Course
- Yamamoto & Kawamura’s Kanji Course
- Mon & Gon’s Quiz Course
The puzzles are created by NazoLock, a puzzle-creation team originating from QuizKnock.
Use your ingenuity to solve this diverse array of puzzles!
Get a great value coupon book and limited-edition stickers when you purchase a puzzle kit!
\チケット販売開始🎟️/
9/10(木)から開催の「#レイトン教授と秘密の招待状」、本日よりチケット販売がスタート!#QuizKnock が仕掛けた謎を、レイトン教授とともに解き明かせ!🎩#QuizKnock10周年プロジェクト
— レイトン教授と秘密の招待状【QuizKnock】 (@quizknock_tdc) August 10, 2026
When you purchase the puzzle-solving kit for this event, you’ll receive a coupon book valid at Tokyo Dome City and limited-edition stickers!
Coupon Book
When you purchase the mystery-solving kit, you’ll receive a coupon book valid at over 50 participating facilities and stores within Tokyo Dome City!
Since there’s no time limit for this event, you can use the coupon book to enjoy some shopping between solving puzzles.
Limited-Edition Stickers

Make a purchase of 1,000 yen (tax included) or more at participating stores within Tokyo Dome City and present your mystery-solving kit or coupon book to receive a “limited-edition sticker” as a bonus!
- First Half: Thursday, September 10, 2026 – Saturday, November 7, 2026
- Second Half: Sunday, November 8, 2026 – Sunday, December 20, 2026
The “Professor Layton” Special Collaboration Event starts on September 10!
"Professor Layton and the Secret Invitation at Tokyo Dome City," produced by QuizKnock, will be held starting Thursday, September 10, 2026!
Online tickets are available for 2,800 yen (tax included) on the event’s official website.
For the latest event updates, check the official “Professor Layton and the Secret Invitation” X account ( @quizknock_tdc )!
| Event Overview | |
|---|---|
| Title | QuizKnock × Professor Layton: Professor Layton and the Secret Invitation at Tokyo Dome City ~QuizKnock 10th Anniversary Project~ |
| Dates | September 10, 2026 (Thu) – December 20, 2026 (Sun) |
| Location | Tokyo Dome City |
| Price | 2,800 yen (tax included) |