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Uncover the lost seal of Childéric I, the buried Frankish king whose tomb in Tournai hides a royal conspiracy. Decipher clues across 8 landmarks to expose the secret buried with him in 481 AD.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1653, workers in Tournai unearthed the magnificent tomb of Childéric I, father of Clovis and founder of the Merovingian dynasty
You are Childeric I, King of the Salian Franks, returned to Tournai in 481 to reclaim your royal seal, buried for centuries.
Your mission: reconstruct the journey of your
Dive into the heart of Tournai, a city of art and history in Hainaut, to find the lost seal of a Frankish king and unlock the millennial secrets of its UNESCO heritage.
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
« Tournai sings and listens »— Official motto of the city of Tournai
Your quest for the seal begins on the Grand-Place of Tournai, a UNESCO World Heritage site since 2000. This historic center, paved with local blue stones, has been the vibrant heart of the city since the Middle Ages, hosting weekly markets since 1192, a tradition established by Baldwin V of Hainaut. It is here, amidst 17th and 18th-century buildings, that the first clues to your royal lineage await you, hidden in architectural details or the tales of merchants who once roamed this 1.5-hectare square.
Proceed to Notre-Dame Cathedral of Tournai, consecrated in 1171 and also a UNESCO site since 2000 for its unique Romanesque architecture in Belgium. Its five 83-meter-high towers dominate the skyline and witnessed the iconoclasm of 1566 before being restored by Viollet-le-Duc in the 19th century. It was beneath its foundations that the tomb of Childeric I, who died in 481, was excavated in 1653 by Alexandre de Berghes. Here, messages carved in stone will guide you to places where your seal might have been hidden.
Your journey then takes you to Saint-Brice Church, a former collegiate church founded in the 10th century by Bishop Hélénard, rebuilt in Gothic style between 1610 and 1624. Its 50-meter bell tower, restored after the 1940 bombings, houses a 17th-century Baroque altarpiece depicting the Virgin. Nearby, Rue de l'Yser, a cobbled street lined with 18th-century houses, connects you to the Grand-Place and the Scheldt quays. This district, an integral part of the UNESCO site, conceals riddles related to Tournai's history and events commemorated by the 1920 plaque, recalling the Battle of the Yser (1914-1918).
Walk along the Scheldt Quays, developed in the 19th century along this vital waterway since Roman times, when Tournai was known as Turiacum. The historic port, with its 1830 locks, connected Tournai to Antwerp and was used for grain trade in the Middle Ages along its 2 km of central quays. Then, discover the Hôtel de Ville of Tournai, built between 1662 and 1675 in Flemish Baroque style. It incorporates the UNESCO Belfry from 1188 (rebuilt 1522), 72 meters high with a carillon of 42 bells, seat of communal power since 1192 and classified monument in 1936. These places, witnesses to your past, hold clues to the seal's final hiding place.
Your quest culminates at the Pont des Trous, a 13th-century river fortification (around 1290) 140 meters long over the Scheldt, restored in 1993 after its partial demolition under Napoleon in 1810. Its 13 arches and two 18-meter watchtowers, classified in 1941, lead you to the Tour Henri VIII, built in 1538 by the King of England during his occupation of Tournai (1513-1546). 25 meters high, it is a remnant of the bastioned fortifications and was returned to Belgium in 1815. It is within these ultimate ramparts, symbols of power and conquest, that Childeric I's seal awaits you, revealing the full extent of Tournai's history, a UNESCO City of Music 2023, and its central role in Hainaut.
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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Trace the origins of the first Frankish dynasty, from the kings of Tournai to the founders of France.
Explore the key locations where Clovis consolidated his power and unified the peoples of Gaul.
Decipher clues hidden in the city's architecture and archives to reconstruct a forgotten secret.
Unveil the hidden legacy of the founding father of the Franks.
Reconstruct the seal of Childeric I, key to Clovis's power.
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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Dive into the heart of Tournai, a city of art and history in Hainaut, to find the lost seal of a Frankish king and unlock the millennial secrets of its UNESCO heritage.
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
🪙+24 TripCoins granted with your booking
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
8€. Admirez des œuvres de Rubens, Manet et Van Gogh dans un bâtiment conçu par Victor Horta, classé monument historique belge.
6€. Découvrez des collections de fossiles, minéraux et une faune locale et exotique, un site de découverte pour Tournai en famille.
Prix variable. Savourez une bière artisanale brassée localement dans l'une des brasseries traditionnelles du Hainaut.
12€. Explorez les quais de l'Escaut et le Pont des Trous sous un angle différent, avec des commentaires sur l'histoire du fleuve et de la ville.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.