Goryokaku — Last Samurai Conspiracy
Uncover the hidden conspiracy that doomed the samurai's final stand at Goryokaku. Decipher codes from Hijikata Toshizo's last messages to expose the traitors who betrayed the Republic of Ezo.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1869, as the Boshin War raged, the last samurai of the Shogunate made their desperate stand in Hakodate's star-shaped fortress of Goryokaku
Goryokaku — Last Samurai Conspiracy
You are a Shinsengumi loyalist, tasked in 1869 Hakodate to expose the betrayal that doomed the Republic of Ezo.
The Boshin War rages as the
In 1868, as the Meiji Restoration reshaped Japan, a group of samurai loyal to the shogunate proclaimed the Republic of Ezo in Hakodate. Barricaded in Goryōkaku Fortress, they fought a final battle to preserve their ideals. Immerse yourself in this desperate struggle, where honor and tradition confront modernity.
« Je mourrai comme un samouraï, fidèle au bushidō jusqu'à mon dernier souffle »— Hijikata Toshizō, vice-commandant du Shinsengumi, mai 1869
La guerre de Boshin et l'effondrement du shogunat
In January 1868, the Boshin War breaks out between supporters of Emperor Meiji and those of Shogun Tokugawa Yoshinobu. This civil war opposes two visions of Japan: modernists wanting to open the country to the West versus traditionalists attached to the Tokugawa feudal system. Enomoto Takeaki, former shogun admiral, refuses to surrender the fleet and flees to Ezo (Hokkaido) with 3000 men.
On May 20, 1869, after five months of resistance in the Western-style fortress of Goryōkaku, the last shogunate loyalists surrender. Hijikata Toshizō, legendary vice-commander of the Shinsengumi, dies in combat at Hakodate. This battle definitively marks the end of the samurai era and the advent of modern Japan. The Republic of Ezo, ephemeral rebel government, disappears with the fall of the star fortress.
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.
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. »
How does it work?
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.
Want to go deeper?
Places tied to your adventure — optional entries, totally up to you · per person
The Route
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.
How does it work with a group?
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.
- ✓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.
Ready to live this adventure?
Get my code · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Revolutionary fortress
Japan's first Western citadel, designed according to French plans
Last samurai
Following the footsteps of Hijikata and the legendary Shinsengumi
Heroic tragedy
The romantic epic of old Japan's resistance
Bushidō — la voie du guerrier jusqu'au bout
Reconstituer le plan secret d'Hijikata avant l'assaut final de l'armée impériale
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.
Avis des aventuriers
Soyez le premier à partager votre expérience.
Did you play la derniere bataille des samourais? Check the email you received after your game to leave a verified review.
Your turn to play
Infiltrez-vous dans la forteresse étoilée où les derniers samouraïs livrèrent leur bataille d'honneur. Huit indices dispersés dans Goryōkaku vous mèneront au trésor de guerre caché par le légendaire Hijikata. Résoudrez-vous l'énigme de la République d'Ezo avant que l'Histoire n'efface à jamais les traces de ces héros rebelles ?
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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