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Uncover the dark conspiracy behind the 1164 theft of the Magi Kings' relics from Milan. Decipher clues across Old Town to expose if the bones in Cologne's shrine are truly divine or a medieval forgery.[1][2]
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1164, Emperor Frederick Barbarossa sacked Milan and seized what he claimed were the bones of the Three Magi Kings—Caspar, Melchior, and Balthazar—from a hidden monastery
You are Rainald von Dassel, Archbishop of Cologne, on this pivotal day in 1164, as you return with the precious relics of the Three Kings.
Your mission is to protect
Delve into the heart of Cologne, where the sacred relics of the Three Kings shaped the history and destinies of Germanic emperors.
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 adventure begins in front of the Kölner Dom, on the Domplatte (50.9413° N, 6.9583° E). This Gothic cathedral, whose construction was initiated by Konrad von Hochstaden in 1248 and completed only in 1880, dominates the landscape with its 157-meter-high spires, the tallest in Northern Europe. It is here, in the Shrine of the Three Kings, that the relics you brought back in 1164 rest, making this place a major pilgrimage center. The Kölner Dom, designated a UNESCO World Heritage site in 1996, also served as the coronation site for Germanic emperors until 1797. The Domplatte itself, a gathering place since the 13th century, witnessed the procession of these same relics on November 11. Visiting this historical monument is a must to understand the history of Cologne and North Rhine-Westphalia.
Continue towards the Archäologische Zone Köln (AZK), an archaeological area of 3700 m² opened in 2003. Beneath the modern city of Cologne, you discover the remains of Colonia Agrippina, founded in 50 AD. This area preserves a Roman city gate and a sewer system that bear witness to the ingenuity of Roman engineers. An adjacent underground museum, inaugurated in 2009, plunges you even deeper into this period. This site is tangible proof of Cologne's ancient foundations, long before the era of archbishops like Engelbert II of Berg, and offers a striking contrast to the Gothic grandeur of the Kölner Dom, showing the different layers of North Rhine-Westphalia's heritage.
Your journey then takes you to the Alter Markt, a historic square rebuilt after World War II. It was a lively market place since the 13th century, located near Cologne's Rathaus (City Hall). The statue of Count Engelbert II of Berg, archbishop-elector from 1185 to 1226, watches over this square, which was also the site of the medieval Tuchhalle, a flourishing textile center in the 14th century. In this square, you imagine the merchants and artisans who contributed to Cologne's wealth, a city at the crossroads of trade in North Rhine-Westphalia, long before the Heumarkt became the central hay market.
As you head towards the Heumarkt, a medieval square located 500 meters from the Dom, you pass through a site that was a historic hay market since the 13th century. Rebuilt in 1955 after the destruction of 1945, this square is now a venue for festivals, notably Christmas markets since 1804. Its proximity to the Museum Ludwig, opened in 1976, shows the evolution of Cologne, integrating its medieval history with a more contemporary culture. The Heumarkt, like the Alter Markt, is an example of Cologne's resilience and its ability to rise from its ashes, while maintaining its role as a center of activity for residents and visitors of North Rhine-Westphalia.
The journey concludes with a return to the Kölner Dom after visiting other sites such as the Minoritenkirche, a Franciscan Gothic church from 1237, and Groß St. Martin, a Romanesque church from 1150 whose 54-meter triple tower is an emblem of Cologne's skyline. This stroll through Cologne will have allowed you to trace the history of the relics of the Three Kings, from the Roman foundation of Colonia Agrippina to the imperial coronations of the Kölner Dom. You leave with a deep understanding of the heritage of North Rhine-Westphalia, centuries of architecture, and the figures who made Cologne a city of legend. This itinerary is an interactive visit that reveals the secrets of Cologne's monuments, a unique experience to explore its millennial history.
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 clues from a fragmented and hidden medieval celestial map.
Follow the legend of the Magi Kings whose relics shaped the city.
Explore the hidden details of Cologne Cathedral and its surroundings.
The stone whispers past prayers.
Uncover the secret at the heart of Cologne.
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 heart of Cologne, where the sacred relics of the Three Kings shaped the history and destinies of Germanic emperors.
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
More ideas for self-guided walking tours, scavenger hunts & city quests in the same city

Uncover the hidden formula of Farina's original Eau de Cologne. Follow a trail of 18th-century clues through perfumery haunts to expose a rival's sabotage plot before the elixir vanishes forever.

Uncover the conspiracy behind Agrippina the Younger's rise to power in Roman Cologne. Decipher coded messages left in the ancient city to expose her secret influence over the empire.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
12€. Abrite l'une des plus grandes collections d'art Pop Art en Europe, ainsi qu'une importante collection d'œuvres de Picasso.
5-15€. Explorez les Brauhäuser traditionnels autour du Alter Markt et du Heumarkt pour savourer la bière locale Kölsch, servie dans des verres de 0,2 litre.
15-25€. Admirez le skyline de Cologne, y compris le Kölner Dom et Groß St. Martin, depuis le fleuve Rhin pour une perspective unique de la ville.
10€. Situé juste à côté de la Cathédrale, ce musée expose des artefacts de la période romaine de Colonia Agrippina, y compris la mosaïque de Dionysos.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.