Roskilde Fjord — Decode the Viking Jarl's Hidden Trade Empire
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Roskilde, DenmarkRoskilde Fjord — Decode the Viking Jarl's Hidden Trade Empire
📍 Roskilde, Denmark·🕐 2h30 – 3h·📍 ~3 km
Also available as:HistoricalMysteryFantasySupernaturalFairy tale

Roskilde Fjord — Decode the Viking Jarl's Hidden Trade Empire

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

Difficulty
·From age 12 years
Starting point :Roskilde Harbour, near the modern docks.

In 1070 CE, five Viking longships were deliberately sunk in Roskilde Fjord near Skuldelev—officially to block an invasion route

8
stages
~3 km
route
2h30 – 3h
at your pace
🚶
walking

Roskilde Fjord — Decode the Viking Jarl's Hidden Trade Empire

🎭Your Mission

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.

The story that haunts this land

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.

1016
Cnut the Great becomes King of England, uniting a vast maritime empire
1042
Death of Harthacnut, Cnut's son, end of the Danish dynasty in England
1957
Beginning of the discovery of the Skuldelev ships in the fjord
Far more than an escape game

A game, a guided tour and a heritage guide — all in one

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.

🏛️
Hidden historical gems

At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.

📜
Anecdotes & legends

Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.

🏗️
Architecture & heritage

Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.

🚶‍♀️
Immersive wandering

Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.

🎙️
Immersive audio narration

A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.

📲
Yours forever

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. »

How does it work?

🏛️
Outdoor escape game

Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.

📱
On your smartphone

No app to download. Play directly from your browser. Guided step by step, at your own pace.

👨‍👩‍👧‍👦
Unlimited players

One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.

🎯
Augmented reality

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.

🤖
AI that helps you

Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.

🗣️
32 languages

French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.

🎟️

Want to go deeper?

Places tied to your adventure — optional entries, totally up to you · per person

Roskilde Cathedral (Roskilde Domkirke)optional
€10. Visit this UNESCO World Heritage 1995 site, burial place of 39 Danish monarchs since 1443, with its 85m spire rebuilt in 1633.
Optionnel
/pers.
Ragnarock Museumoptional
€15. Explore Denmark's national museum of rock, pop, and youth culture, a modern contrast to Roskilde's Viking history.
Optionnel
/pers.
Local Craft Beer Tastingoptional
€25. Discover the brewing flavors of Sjælland in a Roskilde microbrewery, continuing a medieval tradition.
Optionnel
/pers.
Viking Boat Trip on the Fjordoptional
€30. Embark on an authentic crossing of Roskilde Fjord Natura 2000 aboard a replica Viking ship, just like the traders of 1070 AD.
Optionnel
/pers.
Budget if you do them all / pers.~0

The Route

8 stages through the city

The gameplay: AR, camera, hidden clues

📱Search clues with your cameraRA

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.

8
original puzzles
24
min of narration
🪙 24
TripCoins granted
16
GPS waypoints

How does it work with a group?

One phone = one team. Pick the number at checkout (1 to 10).

🧍
1 phone

Solo, or a group sharing the screen. One team, one code.

👥
2-3 phones

Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.

👨‍👩‍👧‍👦
4 to 10 phones

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.

  • All codes are independent — play at the same time OR separately, each team advances at its own pace.
  • Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
  • More than 10 phones or need a personalized quest? Discover custom tours.
🕒No date to pick · Code valid 1 year · Play whenever you want

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

Practical info

Starting point
Roskilde Harbour, near the modern docks.
Directions on Google Maps
🕐
Duration
2h30 – 3h
A maritime epic
👥
Players
Unlimited
From age 12
📍
Distance
~3 km
Along the fjord and city center
Accessibility
Full
Mostly flat route
🌐
Languages
17 languages
Built-in translation

Why this route?

💰

Trade Networks

Follow the trails of Viking merchants, from northern ports to distant markets.

🧭

Navigation and Exploration

Uncover the techniques that allowed Vikings to explore and connect continents.

📜

Secret Logbook

Decipher an ancient manuscript revealing the double lives of merchant-warriors.

Gold never sleeps...

Especially when it travels by longship.

★ Innovation 2026

9 features nobody else has

OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.

🎁

AR treasure chest

A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.

🧙

AR narrator character

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.

📜

Magic golden letters

At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.

🎧

Written + audio narration

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.

🧭

360° radar + vibration

A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.

📸

Heritage storytelling

Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.

🤖

Progressive AI hints

3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.

🤳

AR selfie memento

At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.

📱

Zero app to install

PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.

Frequently asked questions

Q01Do I need to download an app?

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.

Q02Does it work offline?

GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.

Q03How long does a game take?

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.

Q04What happens if I'm stuck?

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).

Q05What's the age range?

From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.

Q06What if my city isn't in the catalogue?

Pre-register or contact us — we'll email you as soon as your city is live.

Q07What is augmented reality exactly?

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.

Avis des aventuriers

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Your turn to play

Discover Roskilde, former royal capital of Sjælland, by deciphering the commercial secrets that Viking Jarls carved into the stone and waters of the fjord.

12€
1 phone
23€
2 phones
33€
3 phones
42€
4 phones
50€
5 phones
56€
6 phones
62€
7 phones
68€
8 phones
74€
9 phones
80€
10 phones

1 purchase = 1 phone. Play several on the same device.

🕒No date to pick · Code valid 1 year · Play whenever you want
Get my code · 12€

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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