Hiroshima — The Hibakusha's Vow
From12€

🕒 No date to pick · Code valid 1 year · Play whenever you want

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Peace Memorial Park, HiroshimaHiroshima — The Hibakusha's Vow
📍 Peace Memorial Park, Hiroshima·🕐 2h30 – 3h·📍 ~2.5 km
Also available as:HistoricalMysterySupernaturalCinema

Hiroshima — The Hibakusha's Vow

Uncover the hidden vow of Korean hibakusha silenced after the blast. Decode their secret messages etched in memorials to expose a post-war conspiracy before it fades forever.

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

Difficulty
·From age 12 years
Starting point :Near the A-Bomb Dome

In the heart of Hiroshima Peace Memorial Park, a solemn vow was sworn among the Korean hibakusha—survivors forced into silence by discrimination and official cover-ups

8
stages
~2.5 km
route
2h30 – 3h
at your pace
🚶
walking

Hiroshima — The Hibakusha's Vow

🎭Your Mission

You are Kunihiko Sakuma, a hibakusha survivor born in 1945, whose quest is to transmit memory and hope in Hiroshima.

Your mission leads you through Hiroshima, in the

Immerse yourself in Hiroshima, a phoenix city, for a memorial journey where past ruins whisper vows of a peaceful future.

« Let all the souls here rest in peace, for we shall not repeat the evil. »
Official Inscription, Cenotaph for the Atomic Bomb Victims, Hiroshima Peace Memorial Park, 1955

The story that haunts this land

Your journey in Hiroshima begins at the Genbaku Dome, the former Hiroshima Prefectural Industrial Promotion Hall, designed by Jan Letzel and completed in 1915. This partially preserved structure, only 160 meters from the hypocenter of the atomic explosion on August 6, 1945, stands as a powerful symbol. Inscribed on the UNESCO World Heritage list in 1996, the Dome, with its original height of 25 meters, reveals the devastating impact that destroyed its roof and interiors. The city of Hiroshima and the Chugoku region offer an essential first step here to understand the event's scale and the tenacity of memory.

Continue towards the vast Hiroshima Peace Memorial Park, inaugurated in 1955 on the ruins of the city center. Spanning 120,000 m², this park designed by Kenzo Tange houses over 50 commemorative monuments. Approximately 500 meters from the hypocenter, it welcomes 300,000 annual visitors for peace. At the heart of the park is the Peace Flame, lit on August 1, 1964, burning continuously until the total destruction of nuclear weapons. Directly visible from the Genbaku Dome at 400 meters, it is fueled by natural gas and bears the inscription 'May the flame not be extinguished until atomic bombs are abolished.' This site is central to any visit to Hiroshima.

The route then leads you to the Children's Peace Monument, erected in 1963 in memory of Sadako Sasaki, who died in 1955 from radiation-related leukemia. This 9-meter-high statue, topped with a girl holding a paper crane, symbolizes the hope of a thousand cranes. Millions of colorful paper cranes are hung by visitors from around the world, renewed annually. 600 meters from the Genbaku Dome, this poignant monument in the Peace Memorial Park embodies the resilience of young victims. You then reach the Cenotaph for the Atomic Bomb Victims, built in 1955 by Kenzo Tange, bearing the inscription 'Let all the souls here rest in peace, for we shall not repeat the evil.' 45 meters long, it houses the list of 440,000 known victims from 1945, aligned with the Genbaku Dome and the Peace Museum.

Your exploration continues to the Hypocenter Pillar, a basalt marker erected in 1985 at the exact point of the aerial detonation, 580 meters high. With its base dimensions of 1 m x 1 m and a height of 2 meters, this pillar, 500 meters from the Genbaku Dome, bears the inscription 'Atomic Bomb Explosion Center, August 6, 1945, 8:15 AM.' Although partially hidden by trees in the Peace Memorial Park, it is a crucial point in Hiroshima's history. You then walk along the Motoyasu River, crossed by the T-shaped bridge 100 meters from the Dome. Survivors fled along its banks in 1945, and its 30-meter-wide water flow carried bodies post-explosion. A direct view of the Genbaku Dome is offered from the west bank, 200 meters from the path, highlighting the river's importance in the city's narrative.

The National Peace Memorial Museum for the Atomic Bomb Victims, opened on April 5, 2002, offers an in-depth perspective. Across 2,700 m² and two floors, it displays a collection of 350,000 artifacts, including burnt clothing and testimonies from 1945. Located 400 meters from the Genbaku Dome in the Peace Memorial Park, this museum, with its capacity for 600 visitors, is a key step in understanding Hiroshima's history. This thematic circuit in Hiroshima, at the heart of Chugoku's heritage, is an invitation to an interactive and immersive visit. It allows you to grasp hibakusha testimonies, explore the Peace Memorial Park, and reflect before the Atomic Bomb Dome, essential sites for anyone wishing to discover Hiroshima's history and its commitment to peace.

6 août 1945
Bombing of Hiroshima, beginning of the Hibakusha tragedy.
1947
Establishment of the ABCC (Atomic Bomb Casualty Commission) to study radiation effects, but without providing direct treatment.
1957
Enactment of the Atomic Bomb Victims Relief Law, a first official recognition.
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.

📵
Playable offline

The game downloads to your phone on start. Once the "✓ Downloaded" indicator appears, everything works without data — narration, AR, GPS and puzzles. Perfect abroad without a data plan.

🎟️

Want to go deeper?

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

Hiroshima Peace Memorial Museumoptional
200 ¥. Explore detailed exhibitions on the 1945 events, featuring personal accounts and poignant artifacts.
Optionnel
/pers.
Shukkei-en Gardenoptional
260 ¥. Discover a 17th-century traditional Japanese garden, rebuilt after the war, offering an oasis of calm and beauty.
Optionnel
/pers.
Okonomiyaki Tastingoptional
800-1500 ¥. Taste Hiroshima's culinary specialty, a savory pancake topped with cabbage, pork, and noodles, cooked on a hot plate.
Optionnel
/pers.
Visit Miyajima Island (Itsukushima)optional
Ferry 360 ¥. Explore the UNESCO-listed Itsukushima Shrine, famous for its floating torii gate, a short ferry ride from Hiroshima.
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€

No calendar booking. Code sent immediately by email.

🔒 Secure payment · Code in 5 min · Free cancellation

Practical info

Starting point
Near the A-Bomb Dome
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.5 km
Peace Park & surroundings
Accessibility
Partial
Flat paths, some sidewalks
🌐
Languages
17 languages
Built-in translation

Why this route?

🕊️

Silent Testimonies

Delve into the poignant accounts of atomic bomb survivors.

💔

Invisible Resilience

Uncover the courage of the Hibakusha in the face of discrimination and stigma.

📜

Legacy of Hope

Bring to light a forgotten vow that continues to inspire generations.

The silence of the ruins hides the cries of the soul.

To regain a lost dignity.

★ 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

Q01Concretely, how does it unfold outdoors?

You arrive in Peace Memorial Park, Hiroshima, open the link on your phone, the story starts. It's the modern outdoor escape game: audio narration, camera puzzles, final code unlocked as a team. No install. No need to book a time slot.

Q02How long does it take to finish Hiroshima — The Hibakusha's Vow?

Plan 1 h 30 to 2 h 30 depending on your pace. Some finish in 1 h 10, others take 3 h in slow-mode. No pressure: the clock only counts for the leaderboard, you play at your tempo.

Q03Does Hiroshima — The Hibakusha's Vow work for team-building?

Yes — it's actually one of our main use cases. Outdoor escape game format, teams of 4 to 6, live ranking possible between groups. For companies above 12 participants, contact us: we can issue linked codes.

Q04What happens if it rains in Peace Memorial Park, Hiroshima?

The game is playable in light rain — just keep your phone under a hood. For heavy thunderstorms, your code stays valid, you can postpone to another day at no cost.

Avis des aventuriers

Soyez le premier à partager votre expérience.

Did you play le serment des hibakusha? Check the email you received after your game to leave a verified review.

Your turn to play

Immerse yourself in Hiroshima, a phoenix city, for a memorial journey where past ruins whisper vows of a peaceful future.

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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