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Decipher why five Viking warships were deliberately sunk in 1070 to block Roskilde Fjord. Uncover the hidden threat that forced this desperate naval barricade.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1070, Roskilde was Denmark's most powerful trading hub—a beacon of Viking commerce and wealth
You are Svend Tveskæg, Viking King and military strategist in Roskilde around the year 1000, tasked with understanding the threat looming over your coasts.
You arrive at the
Unravel the submerged secrets of the Viking defenses that protected Roskilde, in the heart of mysterious Sjælland.
Your quest begins at the Vikingeskibsmuseet, founded in 1969 after the discovery of five Viking ships sunk around 1070 at Skuldelev to block access to Roskilde Fjord. These Skuldelev ships, excavated between 1959 and 1962, reveal the naval ingenuity of the Vikings. The largest, Skuldelev 2, measured 29 meters long and traveled 12,000 km, testifying to the vast explorations of the era. This museum, located on Peberlyk just 1 km from Roskilde city center, exhibits faithful reconstructions like the replica of Roar Ege, launched in 1984. It is an essential site for Viking naval archaeology, listed on the UNESCO tentative list in 2004, offering an insight into Denmark's world heritage and the famous Skuldelev ships.
Heading towards the heart of Roskilde, you discover Roskilde Domkirke, a Romanesque cathedral whose construction began as early as 1080, before being expanded in the Gothic style in the 13th century. This site, classified as a UNESCO World Heritage site in 1995 as a Danish royal mausoleum, is the burial place of 39 Danish kings and queens. The main tower, soaring 85 meters high, dominates the Sjælland landscape, while the 1991 organ, with its 59 stops, still resonates with royal coronations since 1443. The preserved original Romanesque apse from 1170 directly connects you to the era of Harald Blåtand and Olof Skötkonung, whose destinies are linked to the emergence of this powerful kingdom.
Continue your Roskilde visit towards the moving remains of Sankt Laurentii Kirkeruin, a 12th-century parish church burned down in 1380. These ruins, the most complete of a Romanesque church in Denmark, are located near the port and include a 25-meter long choir and 15-meter high towers. Even before the church's construction, the site was used as a Viking cemetery before 1100, with excavations in 1910 revealing pagan tombs. This historically rich place offers a unique perspective on Denmark's transition from pagan to Christian, a path initiated by figures like Harald Blåtand.
Your exploration then leads you to Stændertorvet, Roskilde's historic central square since the Middle Ages, and the site of the weekly market since 1268. Here stands the Renaissance town hall, rebuilt in 1493 after a fire. This 5,000 m² square was also a site of public execution until the 18th century, bearing witness to the evolution of laws and customs. Nearby, Det Gule Palæ, a baroque manor built in 1736 by Governor Johan Frederik Classen, features the typical ochre yellow of royal buildings. Located at Algade 29, it was visited by King Christian VII in 1771, and is now an art gallery, extending Roskilde's history through the centuries.
Your journey through Roskilde's history concludes near Sankt Ibs Kirke, a 14th-century Gothic church dedicated to Saint James, whose 45-meter bell tower was added in 1520. Its interior houses 16th-century wall frescoes depicting biblical judgments. This place of worship was even used as a grain store by the Swedish army in 1658 during the occupation, illustrating the city's resilience in the face of conflict. This interactive Roskilde visit, from the UNESCO Roskilde Domkirke 1995 to the Vikingeskibsmuseet Skuldelev ships, offers a complete immersion in Sjælland's heritage, revealing the layers of history that shaped this ancient Viking capital. It is an essential discovery for understanding the history of Roskilde and the monuments of Sjælland.
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
Uncover the construction secrets of the longships and knorrs that dominated the Northern seas.
Dive into the heart of a daring plan to protect Roskilde from maritime invasions.
Explore the sites that unveiled the remains of an era of conquests and survival.
The fjord keeps its secrets...
But the ships reveal all.
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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Unravel the submerged secrets of the Viking defenses that protected Roskilde, in the heart of mysterious Sjælland.
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.
Accès gratuit aux jardins. Admirez l'architecture baroque du XVIIIe siècle, ancienne résidence royale adjacente à la cathédrale de Roskilde.
À partir de 145 DKK. Montez à bord d'une réplique de bateau viking et naviguez sur le fjord de Roskilde comme les anciens guerriers.
130 DKK. Explorez le musée national du rock, de la pop et de la culture des jeunes, situé dans une ancienne usine de béton à Roskilde.
À partir de 150 DKK. Visitez une brasserie locale et dégustez des bières produites avec des ingrédients de Sjælland.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.