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Decipher encrypted Viking trade routes hidden in Roskilde Fjord. Five sunken ships hold the secrets of a Jarl's forbidden commerce network—uncover the conspiracy before rival clans do.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1070 CE, five Viking longships were deliberately sunk in Roskilde Fjord near Skuldelev—officially to block an invasion route
You are a trade emissary for Jarl Skule, tasked in 1240 with reconstructing Roskilde's exchange networks, vital to Sjælland's economy.
You
Discover Roskilde, former royal capital of Sjælland, by deciphering the commercial secrets that Viking Jarls carved into the stone and waters of the fjord.
Your quest begins at the Vikingeskibsmuseet, the Viking Ship Museum in Roskilde. Founded in 1969 after the recovery of five Viking ships from Roskilde Fjord in 1962, this UNESCO-recognized site houses maritime treasures. These ships, dating from around 1070 AD, were deliberately sunk in the fjord to form a defensive blockade against attacks from the south. The largest, Skuldelev 2, measured 30 meters long and could carry 80 passengers, testifying to the naval and commercial power of the era. Here you perceive the ingenuity of the Vikings, who made Roskilde Fjord a strategic axis for trade and defense of Sjælland.
Continue to Det Gamle Rådhus, the Old Town Hall, built between 1492 and 1496. This Flemish-Gothic style building was initially a merchant guild hall, a central hub for the city's exchanges. Its facade features a 16th-century astronomical clock, restored in 1985, displaying lunar phases – an essential tool for navigation and organizing medieval grain markets. It was the site of crucial assemblies during the Count's Feud in 1536, highlighting its central political and economic role in Roskilde's history. The interior timber roof, spanning 12 meters without supports, uses a carpentry technique typical of the Viking Age.
The Roskilde Museum, housed in a 1739 rococo building that was once a pharmacy, reveals artifacts dating from 1000 BC and a collection of 5,000 Viking jewels. This Roskilde museum highlights the fjord's trade routes between 800 and 1100 AD, revealed by excavations in the 1980s. Exploring its exhibits, you discover how Roskilde Fjord, a narrow inlet of Isefjord, 40 km long and designated Natura 2000 in 1992, was historically vital for Viking trade and defense, with pollen analysis showing intensive trade in grain and oil. The rococo warehouses of Palæhaven, built in the 1740s for royal grain storage, confirm the importance of this harbor, expanded from the 1150s by Absalon.
As you head towards Skt. Ibs Kirke, a Romanesque church from 1130, expanded in Gothic style around 1400, you observe 1450 frescoes depicting local merchants, restored in 1925 to reveal trade symbols. The adjacent graveyard contains the tombs of 17th-century ship captains, all linked to the fjord's flourishing commerce. This church, dedicated to St. Ibb, testifies to the prosperity of Roskilde's inhabitants, who were major players in eel and flounder fishing since medieval times, exploiting the mixed salinity of the fjord's waters, connected to the Baltic Sea.
Your journey concludes in Stændertorvet, Roskilde's main square, a central marketplace since 1020 when Roskilde became a royal seat under Harald Bluetooth. Surrounded by 17th- and 18th-century half-timbered houses, this square, pedestrianized in the 1970s, was the scene of the 1443 cathedral fire that destroyed half the city. It was here that the Treaty of Roskilde was signed in 1658, ceding Danish provinces to Sweden. Here you perceive the legacy of a city that has always been a crossroads of trade, royal power, and major historical events, making Roskilde an essential part of Sjælland's heritage and a UNESCO World Heritage 1995 site.
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
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.
🔒 Secure payment · Code in 5 min · Free cancellation
Follow the trails of Viking merchants, from northern ports to distant markets.
Uncover the techniques that allowed Vikings to explore and connect continents.
Decipher an ancient manuscript revealing the double lives of merchant-warriors.
Gold never sleeps...
Especially when it travels by longship.
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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Discover Roskilde, former royal capital of Sjælland, by deciphering the commercial secrets that Viking Jarls carved into the stone and waters of the fjord.
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
More destinations, tours & urban treasure hunts across the country
Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
10€. Visitez ce site UNESCO World Heritage 1995, lieu de sépulture de 39 monarques danois depuis 1443, avec sa flèche de 85m reconstruite en 1633.
30€. Embarquez pour une authentique traversée du Roskilde Fjord Natura 2000 à bord d'une réplique de bateau viking, comme les commerçants de 1070 après J.-C.
15€. Explorez le musée national danois du rock, de la pop et de la culture jeune, un contraste moderne avec l'histoire viking de Roskilde.
25€. Découvrez les saveurs brassicoles du Sjaelland dans une microbrasserie de Roskilde, perpétuant une tradition médiévale.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.