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Decode the ghostly whispers echoing from WWI trenches. Solve the enigma of a traitor's final message hidden among memorials, before its curse claims another soul.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the mud-choked trenches of the Ypres Salient, 1917, a British officer whispered his dying confession to a comrade: a betrayal that doomed thousands during the bloodbath of Passchendaele
You are a junior architect assisting Reginald Blomfield, Ypres, 1920s, tasked with rebuilding a devastated city and commemorating sacrifices.
Your mission in Ypres is to find the original plans
Unravel the whispers of the past in Ypres, a martyred city in Flanders, where every stone still echoes the Great War.
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
« In Flanders fields the poppies blow / Between the crosses, row on row »— John McCrae, In Flanders Fields, poem published in Punch, December 8, 1915
Your journey begins at the Menenpoort, the Menin Gate, inaugurated on July 24, 1927, by King George V. This medieval city gate, built in 1622 by the Spanish, was destroyed during World War I and rebuilt in 1921. Measuring 65 meters long and 33 meters high, it bears the names of 54,896 Commonwealth soldiers missing during the battles of Ypres. Here, the daily Last Post ceremony, a tribute, has taken place without interruption since 1928, perpetuating the memory of sacrifices.
Continue to the Lakenhalle, the Cloth Hall, a Flemish Gothic masterpiece built between 1200 and 1400. Designated a UNESCO World Heritage site in 1999 as part of Ypres' historic center, this 125-meter-long and 70-meter-high building with its belfry housed 365 draper's rooms. Destroyed in 1914-1918, it was faithfully rebuilt and completed in 1967. Today, it hosts the In Flanders Fields Museum, opened in 1998, dedicated to the history of World War I in the "Ypres Salient."
A short walk away, St George's Memorial Church, an Anglican church built in 1928-1929 by architects J.H.G. Buszard and Sir Reginald Blomfield, honors fallen British officers. Located on Elverdingsestraat, it was consecrated on March 24, 1929. Its stained-glass windows and memorials, funded by soldiers' families, tell the individual stories of those who gave their lives, offering a place of remembrance in the heart of Flanders.
Cross the Grote Markt, Ypres' central square since the 13th century, the historic heart of the wool trade in the Middle Ages. Surrounded by faithfully reconstructed Gothic buildings after 1918, this approximately 1-hectare square has been the site of weekly markets since 1223, in front of the Lakenhalle. Every architectural detail of the square testifies to the city's resilience and its determination to preserve its heritage even after near-total destruction. It is a key point for understanding the rebirth of Ypres.
Your quest will finally lead you to Ramparts Cemetery, a British military cemetery opened in December 1914, located on the medieval city ramparts 500m from the Menin Gate. Managed by the Commonwealth War Graves Commission since 1919, it contains 199 Commonwealth graves. By visiting this site, you grasp the scale of the losses and the international commitment to memory. The secret memorial plans, once assembled, will reveal a new perspective on how Ypres chose to remember, far beyond the battlefields of the "Ypres Salient."
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 accounts of soldiers and chaplains facing the unspeakable.
Decipher the historical facts that fueled the front-line legends.
Explore the psychological impact of war and the power of hope.
Trace the whispers of hope in the heart of darkness.
The truth behind the legend of the Angels of Mons.
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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Unravel the whispers of the past in Ypres, a martyred city in Flanders, where every stone still echoes the Great War.
1 purchase = 1 phone. Play several on the same device.
No calendar booking. Code sent immediately by email.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
12€. Explorez les plus de 1000 artefacts et visites interactives de ce musée, élu European Museum of the Year Award en 1999.
Gratuit. Découvrez cette porte de ville construite vers 1640, partie des fortifications Vauban adaptées, haute de 20 mètres avec son pont-levis original.
Variable. Goûtez aux bières artisanales de Flandre dans l'un des pubs historiques de la Grote Markt, une tradition brassicole séculaire.
Location vélo ~15€. Parcourez les paysages ruraux autour d'Ypres pour explorer d'autres cimetières et mémoriaux du "Ypres Salient".
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.