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Uncover the chilling secret behind the 'Breath of Lost Names' etched in Douaumont's ossuary. Decode inscriptions, trace vanished soldiers' paths, and expose a hidden WWI conspiracy before it claims more souls.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed cloister of Douaumont Ossuary, 4,000 names of the vanished whisper through the wind—a poem of the lost, carved by Bishop Ginisty after the 1918 Armistice
You are Commander Sylvain-Eugène Raynal, heroic defender of Fort de Vaux, in the midst of the 1916 battle for Verdun.
You explore the battlefields of Verdun, Me
Dive into the heart of Verdun's hell, where 130,000 souls rest, silent witnesses to history's longest battle.
« They shall not pass! »— General Philippe Pétain, Order of the Day, February 25, 1916, Battle of Verdun
Your journey begins at the forecourt of the Douaumont Ossuary in Verdun, a solemn edifice built between 1920 and 1932. It houses the remains of 130,000 unidentified French and German soldiers from the 1916 Battle of Verdun, symbolizing Franco-German reconciliation. The 46-meter-high lantern tower, visible for several kilometers, dominates the Grand-Est landscape. As you approach, you perceive the reverence emanating from the 46 underground ossuaries, unique in Europe for their binational character, where combatants from both nations rest. The inauguration on August 7, 1932, in the presence of Marshal Pétain and President Albert Lebrun, still resonates in these places.
Right next door, the Douaumont National Necropolis, created in 1919, spans 13 hectares. This French military cemetery contains 16,142 identified French soldiers' graves, arranged in regular rows that evoke order and equality in sacrifice. Each white stone cross is identical, with the exception of Muslim and Jewish soldiers, whose graves bear crescent and Star of David, illustrating French republican secularism. This national pilgrimage site, managed by the Ministry of Veterans Affairs, underwent major restoration between 2010 and 2016, inviting reflection on the "City of Peace," Verdun's motto.
Your route then leads you to the Monument de la Galette, erected in 1920 on the Douaumont plateau. This commemorative monument, dedicated to French soldiers who fell during the Battle of Verdun, occupies a high point of the battlefield. The sculpture of a French soldier in arms, a symbol of military sacrifice, stands proudly. Here, you get a panoramic view of the German and French positions of 1916. This site is the official place of remembrance for military ceremonies on February 21, commemorating the German attack, and October 24, celebrating the French counter-offensive.
Continue towards the Carrefour des Dames, a major tactical stake during the 1916 Battle of Verdun, a junction point of three main roads on the plateau. Although the precise origin of its name is debated, this place was the scene of multiple German assaults and French counter-attacks. Today, an ordinary crossroads, marked by tourist signs and preserved trench remains in surface archaeology, it connects you to the Voie Sacrée. This mythical 65-kilometer road, linking Bar-le-Duc to Verdun, saw more than 3,800 trucks circulate daily between February and December 1916, transporting 50,000 tons of ammunition and provisions, a symbol of French resistance.
The path finally leads you to Fort de Vaux, a military fortress 200 meters long and 100 meters wide, built between 1881 and 1892. It was here that Commander Sylvain-Eugène Raynal defended the work with 600 men against 10,000 German attackers for 142 days. The surrender on June 7, 1916, after running out of food and ammunition, testifies to the heroism. Today, this open-air museum, with its accessible galleries, preserves traces of the fighting (shell impacts, soldiers' graffiti from 1916). Your exploration concludes at the Verdun War Memorial, Place du Marché, erected in 1920, dedicated to the 163,000 French and German soldiers who died in the battle, a 12-meter sculpture representing France weeping for its children, restored in 2006.
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
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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Delve into the verses of a soldier, a sensitive and intimate testimony to the realities of the front.
Explore a battlefield where nature has reclaimed its rights, but where every relief tells a story.
Discover how places of memory have become symbols of friendship and European peace.
Behind every lost name, a story to resurrect.
Poetry, the last bastion against the oblivion of souls.
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.
Outdoor escape game format: no physical locks, no actor, no fixed time slot. You start when you want, progress through Douaumont, Verdun with your phone, and the city itself is the set. More immersive on local history, more flexible in pace.
Easy stroll: between stops you walk 3 to 7 minutes. No tough climbs unless flagged on the product page. If you really want to push, you can jog between stops, but that's not the point.
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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Dive into the heart of Verdun's hell, where 130,000 souls rest, silent witnesses to history's longest battle.
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.
10€. Explorez les 5 kilomètres de galeries construites au XVIIe siècle, utilisées comme refuge et poste de commandement par les Généraux Nivelle et Mangin en 1916.
15€. Un musée moderne qui retrace la bataille de Verdun de 1916 avec des collections d'objets, des témoignages et des installations immersives.
Gratuit (dégustation). Découvrez la célèbre confiserie locale, une tradition depuis le XIIIe siècle, dans l'une des boutiques du centre-ville de Verdun.
Accès libre. Explorez un réseau de tranchées restauré, offrant une immersion dans le quotidien des soldats de la Première Guerre mondiale, à 45 minutes de Verdun.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.