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Uncover the Viking conspiracy behind the forgotten runes of Hedeby. Decode ancient symbols hidden across the trading town to expose the plot that doomed Haithabu to destruction.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the 11th century, Hedeby—ancient Haithabu—was northern Europe's greatest trading hub, a fortified emporium buzzing with Danish Vikings, Swedish Varangians, and Frankish merchants
You are a loyal scout of Harald Bluetooth, King of Denmark, tasked with thwarting a conspiracy that threatens his kingdom's unity in late 10th-century Hedeby.
Your investigation starts
Delve into Hedeby, the ancient Viking trading hub of Schleswig-Holstein, where the Danewerk protected a burgeoning kingdom.
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 in front of the Viking Museum Haithabu, opened in 1985, the starting point of the journey. Here you discover the foundations of Hedeby (Haithabu), a major Viking trading center located opposite Schleswig on the Schlei Fjord. This key archaeological site, now a UNESCO World Heritage site, was a cosmopolis where cultures mingled, essential for trade and the defense of Harald Bluetooth's kingdom. It was here, in this melting pot of civilizations, that the first tensions threatening the peace of the kingdom were felt, even before Sweyn Forkbeard rebelled against his father.
The path then leads you to the Nördliches Tor, the North Gate of Haithabu. Reconstructed, this 9th-century entrance gate was part of the fortifications encircling the 25-hectare Viking town. It was the main access for ships arriving from the Schlei and land caravans. It is along these ramparts that you examine the marks left by ancient defenders, searching for hidden symbols related to the conspiracy. The Danewerk, a Viking defensive rampart built around 737 AD to protect Hedeby from invasions, stretches for about 30 km across Schleswig-Holstein, and was a silent witness to the many passages through this gate.
Continuing your immersion, you walk along the Schlei, this 42 km coastal fjord connecting the Baltic Sea to the hinterland, bordering Hedeby and Schleswig. This waterway was essential for Viking trade in Hedeby, fostering its role as a cosmopolis. The waters of the Schlei have seen countless longships and merchant vessels pass by, carrying goods and secrets. You imagine the Viking ships whose remains were discovered at the port site, and understand the strategic importance of this waterway for kings like Harald Bluetooth, seeking to unify the region.
Your journey then takes you to the Königshügel, the King's Mound in Haithabu. This 10th-century Viking burial mound, one of the largest in Northern Europe at 14 meters high, is likely the tomb of a local chief or Viking king, excavated in the 19th century. It is located at the heart of the UNESCO site of Hedeby. By climbing this elevation, you get an overview of the reconstructed harbor, based on excavations showing a 200-meter-long quay from the 8th to 11th centuries. This Hafen was the center of Hedeby's international trade, with routes to Birka and Byzantium, a place where information and plots could easily circulate.
Concluding your exploration of the Hedeby and Schleswig sites, you have traced the route of the merchants and warriors who built the greatness of this Viking center. From the Nördliches Tor to the Königshügel, passing by the banks of the Schlei and the remains of the Danewerk, each stage has revealed a fragment of the tumultuous history of this crossroads in Schleswig-Holstein. You have not only thwarted the conspiracy threatening Harald Bluetooth, but you carry with you a deep understanding of the ingenuity and resilience of the Vikings, a heritage that continues to shape the region, listed on the "Viking Heritage Trail Schleswig-Holstein".
8 sites to explore by car within the day
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 · 14,90€No calendar booking. Code sent immediately by email.
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Walk in the footsteps of the warriors and merchants who built Hedeby.
Gather the fragments of a ritual calendar to unveil destiny.
Cross the ancient fortifications that protected the Danish border.
The Viking past whispers to those who listen.
Decipher the runes and save the legendary city of Hedeby.
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 Hedeby, the ancient Viking trading hub of Schleswig-Holstein, where the Danewerk protected a burgeoning kingdom.
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.
Accès libre. Admirez l'architecture gothique et le retable de Brüggemann de 1521, témoin de la christianisation de la région après l'ère viking de Harald Bluetooth.
10€. Découvrez les artefacts originaux et les expositions détaillées sur la vie quotidienne, le commerce et l'artisanat de Hedeby, complétant votre aventure en réalité augmentée.
15-25€. Savourez le Labskaus, un plat traditionnel du nord de l'Allemagne à base de corned-beef, pommes de terre et betteraves, héritage des marins et commerçants de la Schlei.
20-30€. Profitez d'une croisière relaxante sur le fjord Schlei, offrant des vues imprenables sur le paysage de Schleswig-Holstein et les rives de l'ancien Hedeby.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.