Sendai — The Dragon's Lost Emissary
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Historic center of SendaiSendai — The Dragon's Lost Emissary
📍 Historic center of Sendai·🕐 2h – 2h30·📍 ~2.5 km
Also available as:HistoricalMysteryFantasySupernaturalFairy tale

Sendai — The Dragon's Lost Emissary

Uncover the fate of Date Masamune's secret emissary who vanished in 1602 carrying a coded alliance proposal. Decipher clues across his Sendai stronghold to expose the betrayal.

📱 1 to 10 phones · 1 team per phone · Independent codes

Difficulty
·From age 12 years
Starting point :Aoba-yama Park (Sendai Castle Site)

In 1602, Date Masamune, the One-Eyed Dragon of Oshu, dispatched a trusted emissary from Aoba Castle with a cryptic message forging a forbidden alliance against the shogunate

8
stages
~2.5 km
route
2h – 2h30
at your pace
🚶
walking

Sendai — The Dragon's Lost Emissary

🎭Your Mission

You are a Tokugawa Shogunate emissary, dispatched to Sendai in the mid-17th century.

Your mission: decipher the secrets of Date Masamune's legacy, founder of the Sendai

Dive into the epic of Sendai's "One-Eyed Dragon," Date Masamune, and unravel the mysteries of his historic domain, at the heart of Tohoku.

The story that haunts this land

Your quest begins at the Sendai Castle Site, founded in 1602 by Date Masamune on Aoba-yama hill, about 140 meters above sea level. Although the main keep was destroyed in 1882 during the Meiji period, the stone wall ruins remain over 2.3 hectares, testifying to the feudal lord's power. This important historical site of Japan, attracting over a million annual visitors, offers panoramic views of Sendai, the "City of Trees." It is here, among the early 17th-century foundations, that your first augmented reality clues will guide you towards the legacy of a man who shaped Tohoku's history.

The path then leads you to the Sendai City Museum, located very close to Aoba-yama Castle. Founded in 1961 and featuring a modern extension in 2022, this museum houses over 60,000 artifacts. Here you will discover samurai armor, original documents from Date Masamune, and objects from the Sendai domain (Sendai-han) dating from the 17th to 19th centuries. A thematic exhibition on dragons in Japanese art and the iconography of the Sendai domain, including Noh theater pieces and historical masks, will provide crucial clues for your investigation into the Lost Emissary of the Dragon.

Your journey continues to the Osaki Hachimangu Shrine, a Shinto sanctuary founded in 1607 by Date Masamune, 1.5 km southwest of Sendai Castle. Its main building, built in Momoyama style and recognized as an important cultural property of Japan since 1975, is dedicated to the god Hachiman, protector of the Sendai domain. Each year, the Donto-sai festival (January 15-16) draws thousands of visitors. This place of worship reveals the symbols and beliefs that forged the identity of this Tohoku region, with decorative motifs that will help you progress in your mission.

The exploration takes you to the Zuihoden Mausoleum, Date Masamune's own mausoleum, built in 1637, 1 km south of the castle, according to his last wishes. Although damaged during the 1945 bombings, this important cultural property of Japan was restored in 1979, respecting the original 17th-century Momoyama style architecture. The golden paintings and sculptures of dragons and mythical creatures adorning the mausoleum are all keys to unlocking the secrets of the Lost Emissary. You will find vital information here about the fate of the lord of Sendai.

Finally, you return to Aoba-yama hill to visit Aoba Shrine, a Shinto sanctuary dedicated to Date Masamune, erected in 1874 on the ruins of Sendai Castle. This important historical site, 500 meters from the original keep, has become a major place of worship. Every May, the Aoba Matsuri festival celebrates Date Masamune with Edo-period costume processions. By completing your quest here, you will have assembled the fragments of a rich history, connecting the vestiges of the past to the vitality of Sendai, a city that, from the Heian period to the modern architecture of the Sendai Mediatheque, has constantly reinvented itself.

1567
Birth of Date Masamune, future daimyo of Sendai.
1613
Departure of the Keichō Embassy from Tsuki-no-Ura, led by Hasekura Tsunenaga.
1620
Return of Hasekura Tsunenaga to Japan, marking the end of the embassy.
Far more than an escape game

A game, a guided tour and a heritage guide — all in one

You're not just buying an escape game. You're carrying a living guide — historical anecdotes, forgotten legends, key monuments, hidden architecture — unfolding as you go.

🏛️
Hidden historical gems

At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.

📜
Anecdotes & legends

Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.

🏗️
Architecture & heritage

Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.

🚶‍♀️
Immersive wandering

Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.

🎙️
Immersive audio narration

A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.

📲
Yours forever

Keep access to the guide & game for 1 year. Come back any time, share it with friends.

« You will not leave this city the way you entered it. »

How does it work?

🏛️
Outdoor escape game

Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.

📱
On your smartphone

No app to download. Play directly from your browser. Guided step by step, at your own pace.

👨‍👩‍👧‍👦
Unlimited players

One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.

🎯
Augmented reality

Point your phone at the façade: a historical character appears and speaks to you in your language. Golden letters magically write themselves on the wall to reveal the puzzle answer.

🤖
AI that helps you

Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.

🗣️
32 languages

French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.

🎟️

Want to go deeper?

Places tied to your adventure — optional entries, totally up to you · per person

Visit Rinnoji Temple and its Zen gardensoptional
Garden entrance: ~300¥. Explore this Buddhist temple founded in 807, one of Tohoku's oldest, known for its 12th-century Buddha statues and tranquil gardens.
Optionnel
/pers.
Stroll on Jozenji Street and the Sendai Mediathequeoptional
Free access. Discover this avenue lined with 150 zelkova trees, Sendai's cultural heart, and admire the innovative architecture of Toyo Ito's Sendai Mediatheque, built in 2001.
Optionnel
/pers.
Tasting Gyutan (grilled beef tongue)optional
Approximate price: ~1,500-2,500¥ per dish. Savor Sendai's culinary specialty, gyutan, in one of the city's many specialized restaurants.
Optionnel
/pers.
Participate in Sendai Tanabata Festival (August)optional
Dates: August 7-10 (annual). Experience one of Japan's three largest Tanabata festivals, attracting over 2 million visitors, with its colorful decorations.
Optionnel
/pers.
Budget if you do them all / pers.~0

The Route

8 stages through the city

The gameplay: AR, camera, hidden clues

📱Search clues with your cameraRA

At each stop, open your phone camera: an augmented reality character appears on the façade and speaks your language. Hunt the clue — it materializes as golden letters on the real wall or floats in front of you. When you find it, the phone vibrates, an AR chest opens and reveals your answer fragment. 8 stops, 8 clues to find with the camera, 1 final code.

🎭

The stops on your route are a surprise. You'll discover them one by one, guided by your phone, starting from the meeting point.

8
original puzzles
24
min of narration
🪙 24
TripCoins granted
16
GPS waypoints

How does it work with a group?

One phone = one team. Pick the number at checkout (1 to 10).

🧍
1 phone

Solo, or a group sharing the screen. One team, one code.

👥
2-3 phones

Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.

👨‍👩‍👧‍👦
4 to 10 phones

Friends, bachelor/bachelorette, small office outing — each their own code, each plays at their own pace. Tiered pricing then €6 flat per phone from the 6th.

  • All codes are independent — play at the same time OR separately, each team advances at its own pace.
  • Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
  • More than 10 phones or need a personalized quest? Discover custom tours.
🕒No date to pick · Code valid 1 year · Play whenever you want

Ready to live this adventure?

Get my code · 12€

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Practical info

Starting point
Aoba-yama Park (Sendai Castle Site)
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.5 km
Downtown hills
Accessibility
Partial
Slopes and stairs
🌐
Languages
17 languages
Built-in translation

Why this route?

📜

Secret Diplomacy

Follow in the footsteps of an audacious mission at the heart of feudal Japan, defying shogunate prohibitions.

🧭

Transoceanic Journey

Relive the challenges of an unprecedented maritime expedition that connected Japan to Europe.

🏯

The Dragon's Legacy

Explore the vestiges of the power of the legendary Date Masamune, the strategist of Tohoku.

Uncover the secrets of the One-Eyed Dragon's diplomacy.

Japan before Sakoku.

★ Innovation 2026

9 features nobody else has

OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.

🎁

AR treasure chest

A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.

🧙

AR narrator character

Point your phone at the façade: a knight, witch, monk, sailor, detective or ghost appears full-screen and speaks to you in your language with their dedicated ElevenLabs voice (each character has their own unique voice) — your living guide.

📜

Magic golden letters

At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.

🎧

Written + audio narration

Every puzzle available as text AND voice-over: read at your own pace or listen eyes-free while walking. Great in groups and for accessibility.

🧭

360° radar + vibration

A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.

📸

Heritage storytelling

Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.

🤖

Progressive AI hints

3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.

🤳

AR selfie memento

At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.

📱

Zero app to install

PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.

Frequently asked questions

Q01Do I need to download an app?

No, never. You get a link, you click, it plays in your browser. That's the point of a PWA: same as an app, without the hassle.

Q02Does it work offline?

GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.

Q03How long does a game take?

1 h 30 to 2 h 30 depending on your pace. The timer runs but only for the leaderboard — you play at your own tempo.

Q04What happens if I'm stuck?

You get 3 levels of hints per puzzle (increasing penalty). If truly stuck, you can skip the step (45-min penalty but you keep going).

Q05What's the age range?

From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.

Q06What if my city isn't in the catalogue?

Pre-register or contact us — we'll email you as soon as your city is live.

Q07What is augmented reality exactly?

Point your phone at the façade: a historical character appears full-screen and speaks to you in your language. At the puzzle climax, golden letters magically write themselves on the real wall — that's your answer. After each puzzle solved, a treasure chest floats in front of you. Seeing is believing.

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Your turn to play

Dive into the epic of Sendai's "One-Eyed Dragon," Date Masamune, and unravel the mysteries of his historic domain, at the heart of Tohoku.

12€
1 phone
23€
2 phones
33€
3 phones
42€
4 phones
50€
5 phones
56€
6 phones
62€
7 phones
68€
8 phones
74€
9 phones
80€
10 phones

1 purchase = 1 phone. Play several on the same device.

🕒No date to pick · Code valid 1 year · Play whenever you want
Get my code · 12€

No calendar booking. Code sent immediately by email.

🔒Secure payment · Code in 5 min · Free cancellation

🪙+24 TripCoins granted with your booking

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