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Decipher the secret code hidden in Jacob van Eyck's carillon melodies. A 17th-century musical cipher holds the key to a forgotten conspiracy at Utrecht's Dom Tower.
📱 1 to 10 phones · 1 team per phone · Independent codes
Utrecht, 1660s
You are a dedicated scholar of the Utrecht Academy, 1658, specializing in the musical innovations of Jacob van Eyck.
You are investigating an encrypted manuscript discovered in the Domkerk
Follow the musical traces of Jacob van Eyck, recorder virtuoso who revolutionized street music in 17th-century Utrecht.
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
Utrecht still resonates with the melodies of Jacob van Eyck, composer and carillonneur who transformed the Dom Tower into a giant instrument between 1625 and 1657. Born around 1590, this recorder virtuoso revolutionized Dutch street music by creating 'Der Fluyten Lust-hof', the first European collection dedicated to variations for solo flute. On Domplein, the central square since the 13th century, you discover the urban theater where van Eyck gave his improvised concerts, transforming public space into an open-air concert hall.
The Dom Tower, built between 1321 and 1382, rises 112.5 meters above Utrecht as the tallest medieval belfry in the Netherlands. Jacob van Eyck served there as carillonneur and carillon technician from the 1620s, mastering the 49 bells reconstructed in the 16th century. Daily, his compositions resonated throughout the cathedral quarter, creating a unique sonic identity that distinguished Utrecht from other Dutch cities of the era.
In the Dom Cathedral, a Gothic church built between 1254 and 1517, van Eyck developed his recorder art in service of Reformed liturgy. This 109-meter-long cathedral served as an acoustic setting for his musical experiments, where he fused Dutch popular traditions with Italian Renaissance innovations. The adjacent Pandhof, a Gothic cloister from the 14th-15th centuries, preserves the contemplative atmosphere where the composer circulated daily.
The Academy Building, seat of Utrecht University founded in 1636, testifies to the intellectual effervescence that accompanied van Eyck's artistic peak. Nearby, the 14th-century Paushuize and Saint John's Church at Janskerkhof (1423-1520) complete the urban landscape where the musician evolved. These Renaissance and Gothic buildings formed a natural acoustic network, allowing van Eyck's melodies to propagate from one monument to another.
Zocherpark, landscaped in the 19th century on Utrecht's former public gardens, preserves the memory of Jacob van Eyck's musical evenings. Here, between 1640 and 1657 according to archives, the master played recorder for strollers, creating this unique tradition of outdoor concerts that influenced all Dutch musical culture. In 2023, the underground passage beneath the Dom Tower was renamed 'Jacob van Eyck Passage', definitively consecrating his legacy in Utrecht's 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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Decipher an ancient musical score left by the carillonneur Jacob van Eyck.
Uncover the symbols and secrets of a discreet Utrecht guild or society.
Immerse yourself in Utrecht's Golden Age, an era of science, art, and hidden mysteries.
The secret of the bells awaits to be revealed.
Listen to the echoes of the past.
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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Follow the musical traces of Jacob van Eyck, recorder virtuoso who revolutionized street music in 17th-century Utrecht.
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.
16€. Plus grande collection d'art néerlandais d'Utrecht, avec des instruments de musique Renaissance et des portraits du XVIIe siècle contemporains de Jacob van Eyck.
12€. Ascension guidée des 465 marches jusqu'au sommet de la plus haute tour médiévale des Pays-Bas, avec vue panoramique sur le carillon de 49 cloches.
25€. Bières artisanales d'Utrecht dans un café historique du quartier cathédral, avec spécialités néerlandaises traditionnelles et ambiance XVIIe siècle.
Gratuit. Concerts hebdomadaires sur le carillon de la Domtoren les samedis après-midi, perpétuant la tradition musicale inaugurée par Jacob van Eyck au XVIIe siècle.
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