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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
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
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
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.
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.
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.
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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Delve into the poignant accounts of atomic bomb survivors.
Uncover the courage of the Hibakusha in the face of discrimination and stigma.
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.
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.
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.
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.
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.
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.
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Immerse yourself in Hiroshima, a phoenix city, for a memorial journey where past ruins whisper vows of a peaceful future.
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
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
200 ¥. Explorez les expositions détaillées sur les événements de 1945, avec des récits personnels et des artefacts poignants.
260 ¥. Découvrez un jardin traditionnel japonais du XVIIe siècle, reconstruit après la guerre, offrant une oasis de calme et de beauté.
800-1500 ¥. Goûtez la spécialité culinaire de Hiroshima, une crêpe salée garnie de chou, de porc et de nouilles, préparée sur une plaque chauffante.
Ferry 360 ¥. Explorez le sanctuaire d'Itsukushima, classé UNESCO, célèbre pour son torii flottant, à une courte distance en ferry de Hiroshima.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.