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Uncover the hidden runes of King Harald Bluetooth's decree that baptized Denmark. Decode the Jelling stones' secrets, outwit ancient curses, and reveal the truth behind the nation's shadowy founding.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the heart of Jelling, King Harald Bluetooth erected the massive Jelling Stone around 965 AD, proclaiming Denmark's birth as a Christian nation and honoring his parents Gorm and Thyra
You are a royal archivist, dispatched by King Harald Bluetooth in 965 to record the decree that would unify Denmark under the Christian cross.
Your mission takes you to Jelling,
Immerse yourself in 10th-century Jelling, the birthplace of Denmark, and decipher the secrets of the Viking runestones that first inscribed the nation's name.
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
« King Harald ordered this monument in memory of Gorm, his father »— Harald Bluetooth, Runic inscription on the large Jelling Stone, circa 965
Your quest for the decree begins at the foot of Nordhøjen, Jelling's northern mound. Erected around 959-965, this mound, 65 meters in diameter and 8-10 meters high, was excavated in 1820, revealing it may have housed the tomb of Gorm the Old, Harald Bluetooth's father. As an archivist, you examine the surroundings, where the Jelling Monuments, classified as a UNESCO World Heritage site in 1994, attest to the importance of this site for the history of Jelling and Denmark. Augmented reality allows you to visualize the original burial structures, helping you understand Viking burial practices and the status of the rulers.
A few steps from Nordhøjen, you arrive at the Jellingstenene, the famous Viking runestones. The large stone, erected by Harald Bluetooth around 965, is the first to mention the name 'Denmark' and proclaims the Christianization of the country. Standing 2.42 meters high and weighing about 10 tons, it is an essential historical document. The small stone, erected around 960 by Gorm the Old in memory of Thyra, his wife, reveals the family ties of the early kings. Your mission drives you to decipher the runes, revealing the words carved by the Vikings who shaped the cradle of Denmark. These stones are the heart of Jelling's heritage.
Your journey then takes you to Jelling Kirke, Jelling Church, built of stone around 1100 on an earlier Christian site dating from 934. This church, with its 35-meter-high bell tower, had its interior restored in 2004, revealing 19th-century Neo-Romanesque frescoes. It is here that the tombs of Gorm the Old and Harald Bluetooth were believed to have been placed before being moved. As an archivist, you study the evolution of Christianity in Sjaelland, and how this faith replaced ancient Viking beliefs. AR tools show you the original structures and architectural evolutions of the edifice.
Continuing your exploration, you discover the Skibssætningen, a 67-meter-long ship-shaped stone setting, located south of the church. Built around the 10th century, contemporary with the mounds, this arrangement is visible in the UNESCO park. These structures are crucial for understanding Viking funerary rituals and the symbolism associated with ships. Augmented reality helps you visualize the size and scale of this stone ship, and how it integrated into the sacred landscape of Jelling, forming an integral part of the Jelling monuments.
Finally, your mission leads you to the Palisaden, a circular palisade reconstructed with 162 concrete pillars, demarcating a 12-hectare sacred site around the Viking monuments. This fortification, dating from the 10th century and rebuilt in the 1940s, offers a panoramic view of the entire complex. As an archivist, you understand the importance of this demarcation for the protection of Sjaelland's treasures and monuments. The Kongernes Jelling exhibition center, inaugurated in 2017, located at Parvis de Kongernes Jelling, Gormsgade 23, 7300 Jelling, offers an interactive exhibition on the Jelling Stones and the Viking history of Jelling, open Tuesday to Sunday from 10 am to 4 pm in 2026. You leave Jelling with a deep understanding of its central role in Denmark's history, an interactive visit that brought the runes and Viking kings to life.
5-10 curated sites across the territory
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.
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Decipher messages carved in stone by Harald Bluetooth.
Follow the footsteps of Denmark's first kings and their power.
Walk the places where the old faith gave way to the new.
The past is a secret to be unraveled.
Decipher the runes and reveal Denmark's destiny.
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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Immerse yourself in 10th-century Jelling, the birthplace of Denmark, and decipher the secrets of the Viking runestones that first inscribed the nation's name.
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
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💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.