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Uncover the hidden conspiracy behind Orolaunum's enigmatic stelae. Decode ancient inscriptions, track shadowy cult rituals, and expose the forbidden truth buried in Arlon's Gallo-Roman heart before the curse claims you.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the 1st century AD, Orolaunum vicus—modern Arlon—thrived as a bustling Gallo-Roman crossroads, its streets lined with grand mausolea towering like sentinels
You are an Imperial Roman archivist, personally dispatched by Emperor Augustus in the 1st century AD on a secret mission to retrieve a lost stele in Orolaunum, the powerful crossroads of
Delve into the mystery of forgotten cities and unearth the Gallo-Roman secrets of Orolaunum, capital of the Treveri, in the heart of Arlon.
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
Your quest begins at Place Léopold, the beating heart of Arlon. Developed in the 19th century in honor of Léopold I, the first King of the Belgians, this 5,000 m² square has always been a convergence point. Since the Middle Ages, it has hosted weekly markets, testifying to its central role in the city's economic and social life. The neoclassical buildings surrounding it, erected between 1830 and 1850, immerse you in a past atmosphere as you search for the first clues of the missing stele.
A short walk away, Arlon's Hôtel de Ville stands proudly. Built between 1621 and 1626, it embodies the Mosan Renaissance style, succeeding a 16th-century edifice. Its facade is adorned with 48 allegorical statues, sculpted by local artisans, representing virtues and arts. Classified as a Historic Monument since 1943, this building has housed municipal archives since 1830. The bell tower, rising to 40 meters, offers a perspective on Wallonia's history and its administrative secrets, possibly linked to your imperial mission.
Your journey then leads you to Arlon's Archaeological Garden, a Gallo-Roman Orolaunum site opened in 1931. Over 1 hectare, this garden exhibits mosaics and foundations of Roman villas dating from the 2nd-3rd century, discovered during the 1920s excavations. This place is a direct link to Orolaunum, which was the capital of the Treveri under the Roman Empire from the 1st to 4th century. Right next door, Arlon's Roman Baths, listed as a classified heritage property in 1997, reveal remains from the 2nd century AD over approximately 2,000 m², with intact hypocaust and pools. These archaeological sites in Wallonia are crucial for your investigation.
Continuing your exploration, you arrive at Saint-Donat Church. This collegiate church, initially built in the 11th century then remodeled in the 14th century in a Brabantine Gothic style, is another Historic Monument Belgium. Its bell tower, completed in 1721, rises 62 meters high. More importantly for your quest, it houses Gallo-Roman funerary steles from the 3rd century, exhibited in its crypt. These artifacts offer a direct insight into the Treveri culture and could contain clues about Augustus' stele. Classified as a Historic Monument in 1937, this church is a pillar of Wallonia's archaeological heritage.
Your journey concludes on Rue des Thermes, which follows the route of Orolaunum's ancient cardo maximus from the 1st century, and Place du Musée. Rue des Thermes, 300 meters long, is lined with 18th-century houses and has revealed 2nd-century Roman sigillata pottery during excavations. Finally, Place du Musée, developed in the 19th century, is the heart of the Gallo-Roman quarter and home to Arlon's Archaeological Museum. Founded in 1840, it houses Belgium's largest Gallo-Roman lapidary collection with over 600 funerary steles from the 2nd-4th century, including the famous 'Augustus' stele dated 14 AD. You have found traces of your mission in this Gallo-Roman Orolaunum site, thus concluding your interactive visit to Arlon.
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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Decipher messages carved in stone by Orolaunum's inhabitants, witnesses to a forgotten civilization.
Explore the remnants of a distant civilization and its complex funerary rituals scattered throughout the city.
Follow the clues of a funerary enigma through the modern city of Arlon, from its squares to its ancient alleys.
Dead indeed, but always remembered.
Decipher the legacy of Orolaunum's ancestors.
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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Delve into the mystery of forgotten cities and unearth the Gallo-Roman secrets of Orolaunum, capital of the Treveri, in the heart of Arlon.
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.
5€. Découvrez l'art et l'histoire locale d'Arlon à travers les collections du sculpteur Jean-Marie Gaspar et d'autres artistes régionaux.
Gratuit. Explorez les vestiges d'une tour de défense romaine du IIIe siècle, offrant une vue sur les anciennes fortifications d'Orolaunum.
15€. Savourez les saveurs uniques des bières artisanales brassées dans la province de Luxembourg, avec des options pour tous les palais.
Gratuit. Profitez d'un espace vert paisible en plein cœur d'Arlon, idéal pour une pause détente après votre exploration historique.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.