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Uncover the clandestine network of the Angels of Mons, the ghostly guardians who shielded resistance fighters during the Great War. Decipher coded messages hidden in WWI monuments to expose their ultimate secret before it vanishes forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed streets of Mons' historic center, the Angels of Mons emerged as ethereal protectors during the Great War
You are a royal archivist, dispatched by Leopold I, King of Belgium, to record the untold stories of Mons, the Strong.
Your mission takes you through the Grand-Place of Mons, the starting
Dive into the heart of Mons, a fortified city in Hainaut, and uncover the mysteries hidden beneath its ancient cobblestones and Flemish facades.
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
« Mons Fortis »— Historic motto of Hainaut, attested in medieval charters
Your quest begins on the Grand-Place of Mons, the administrative and commercial heart of the city since the Middle Ages. Surrounded by Flemish and classical facades, rebuilt after the destructions of 1940-1945, this square is the nerve center of any exploration of Mons' heritage. It is here that Hainaut's urban autonomy was affirmed, a history you will decipher by exploring every corner. The stories of merchants and magistrates still resonate, inviting you to an interactive tour of Mons' soul.
Continue towards the Maison de la Mémoire de Mons, an interpretation center that documents local history and 20th-century events. Located in the city center, this site for transmitting Mons' collective memory offers insight into the city's challenges and renaissances. Not far, the Collegiate Church of Sainte-Waudru of Mons, a major edifice of Hainaut's religious heritage, whose construction began in 1450 and gradually completed until the 17th century, reveals its flamboyant Gothic style. It houses the reliquary of Sainte-Waudru (Waltrude), founder of the Mons monastery in the 7th century.
Your journey then leads you to the Belfry of Mons, inscribed on the UNESCO World Heritage list in 1999 as one of the 56 belfries of Belgium and France. Dominating the Grand-Place of Mons, this 87-meter tower is a symbol of urban freedom. Its initial construction dates back to the 12th century (around 1150), with a major reconstruction in the 15th century after several fires. Its carillon of 49 bells, the oldest dating from 1657, will remind you of the fortified city's constant vigilance. It is a central point for understanding the history of Mons.
Explore Square Saint-Germain of Mons, a historic public space redeveloped in the 19th century, near the old ramparts and medieval fortifications. These vestiges, integrated into the current urban landscape, bear witness to the strength of "Mons Fortis." The path then leads you to the British Memorial of Mons, which commemorates the Battle of Mons on August 23, 1914, the first major engagement of British troops in Belgium during World War I. This site recalls the British military presence and Allied losses in the collective memory of Hainaut.
Conclude your exploration at the Jardin du Mayeur of Mons, a historic green space developed in the 19th century, named after the function of Mayeur (mayor) of Mons. This place for walking and relaxation, integrated into the urban fabric of the historic center, offers a serene perspective on the city's evolution. By revisiting the historic ramparts and fortifications of Mons, you will understand how this fortified city of the Middle Ages, with its successive enclosures dismantled in the 19th century, managed to preserve traces of its past. Your interactive visit to Mons will have offered you a unique perspective on Belgium's world heritage.
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?
Get my code · 12€No calendar booking. Code sent immediately by email.
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Unravel the mystery of the "Angels of Mons" and their role in the Great War's imagination.
Uncover the heroic actions of a forgotten resistance network under occupation.
Penetrate the secrets and sacrifices of the civilian inhabitants of Mons who defied the enemy.
Legends are sometimes written in blood, but truth is carved in courage.
Pierce the veil between myth and reality.
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 Mons, a fortified city in Hainaut, and uncover the mysteries hidden beneath its ancient cobblestones and Flemish facades.
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€. Plongez dans l'histoire de la Ducasse de Mons, une fête folklorique inscrite au patrimoine immatériel de l'UNESCO.
Gratuit. Suivez les traces des fortifications médiévales pour une vue différente sur la ville de Mons.
12€. Découvrez les collections permanentes et expositions temporaires d'art moderne et contemporain au cœur de Mons.
4€. Savourez cette spécialité locale, parfaite pour une pause gourmande après votre exploration du centre historique.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.