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Uncover the buried truth of a traitor's coded confession hidden along the Death Railway. Decode clues at war graves, bridges, and memorials to expose the conspiracy before it fades into legend.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1943, amid the brutal construction of the Death Railway, a Japanese officer uncovered a plot among POWs to sabotage the infamous River Kwai Bridge
You are an Allied intelligence agent, dispatched to Kanchanaburi in 1943, tasked with uncovering a wartime conspiracy.
In 1943, amid the brutal construction of the Death
Kanchanaburi – The Silent Weight of History
« « The survivors are not the strongest, but those who never give up. » »— Ernest Gordon, POW on the Death Railway
Between 1942 and 1943, the Imperial Japanese Army forced over 200,000 Asian civilian laborers and 60,000 Allied prisoners of war (British, Australian, Dutch, American) to construct the Thailand-Burma Railway. Along the 415 kilometers of track through jungle, mountains, and over the Kwai River, approximately 100,000 civilians and 12,000 POWs died from starvation, disease, exhaustion, or brutality. The Bridge over the River Kwai, immortalized in film, is just a small part of this colossal and bloody undertaking, whose remnants serve as a testament to human ingenuity in the face of horror.
Despite the war crimes trials that followed Japan's surrender, many officers and camp officials involved in the atrocities of the Death Railway evaded justice, often due to political protection or the destruction of evidence. This lack of accountability left an open wound in the memory of Allied nations and the victims' families. The coded diary you seek might contain the belated confession of one of these 'ghosts' of history, a crucial testimony for future generations and a step towards long-awaited justice.
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
5-10 curated sites across the territory
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.
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Follow the path of the infamous Death Railway and discover its poignant history through iconic locations.
Decipher the codes of a secret diary to reveal the confessions of a tormented officer and forgotten destinies.
Shed light on the gray areas of history and give a voice to those who were never heard, seeking a form of redemption.
The past is a diary that can always be rewritten.
But the truth itself is unalterable.
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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Uncover the buried secrets of Kanchanaburi and give a voice to the shadows of the past. Your quest for truth begins now.
1 purchase = 1 phone. Play several on the same device.
No calendar booking. Code sent immediately by email.
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Pour une immersion complète dans l'histoire de la Ligne de la Mort, avec des expositions détaillées sur la construction, les conditions de vie et les témoignages des prisonniers de guerre.
Visitez les répliques des abris de bambou des prisonniers de guerre, offrant un aperçu poignant de leur quotidien. Ce musée renforce le contexte historique de l'acte 4.
Situé près du pont, ce musée présente des artefacts de guerre et des informations complémentaires sur la région pendant la Seconde Guerre mondiale, enrichissant l'intrigue de l'acte 3.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.