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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
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
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.
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.
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.
At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.
Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.
Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.
Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.
A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.
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. »
Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.
No app to download. Play directly from your browser. Guided step by step, at your own pace.
One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.
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.
Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.
French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.
Places tied to your adventure — optional entries, totally up to you · per person
8 stages through the city
The gameplay: AR, camera, hidden clues
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.
One phone = one team. Pick the number at checkout (1 to 10).
Solo, or a group sharing the screen. One team, one code.
Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.
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.
Ready to live this adventure?
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Follow in the footsteps of an audacious mission at the heart of feudal Japan, defying shogunate prohibitions.
Relive the challenges of an unprecedented maritime expedition that connected Japan to Europe.
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.
OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.
A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.
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.
At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.
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.
A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.
Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.
3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.
At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
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.
GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.
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.
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).
From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.
Pre-register or contact us — we'll email you as soon as your city is live.
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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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.
1 purchase = 1 phone. Play several on the same device.
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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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Entrée aux jardins : ~300¥. Explorez ce temple bouddhiste fondé en 807, l'un des plus anciens du Tohoku, connu pour ses statues de Bouddha du XIIe siècle et ses jardins paisibles.
Prix indicatif : ~1 500-2 500¥ par plat. Savourez la spécialité culinaire de Sendai, le gyutan, dans l'un des nombreux restaurants spécialisés de la ville.
Accès libre. Découvrez cette avenue bordée de 150 zelkovas, cœur culturel de Sendai, et admirez l'architecture innovante de la Sendai Mediatheque de Toyo Ito, construite en 2001.
Dates : 7-10 août (annuel). Vivez l'un des trois plus grands festivals de Tanabata du Japon, attirant plus de 2 millions de visiteurs, avec ses décorations colorées.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.