Knin — Zvonimir's Lost Secret
From14,90€

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Knin, CroatiaKnin — Zvonimir's Lost Secret
📍 Knin, Croatia·🕐 5h – 8h·📍 ~40-60 km en voiture
🚗Roadtrip · Car needed
Also available as:HistoricalRomanceSupernaturalFairy tale

Knin — Zvonimir's Lost Secret

Uncover the secret chronicle of King Zvonimir, hidden before his cursed death. Decode clues across Knin's ancient fortress to break a 1000-year curse and reveal Croatia's royal conspiracy.

📱 1 to 10 phones · 1 team per phone · Independent codes

Difficulty
·From age 12 years
Starting point :In front of the main entrance of Knin Fortress, Ul. Tvrdjava

In 1076, Knin Fortress became the beating heart of the Croatian Kingdom under King Dmitar Zvonimir

2–4
days at your pace
🚗
car · 5-30 km between sites

Knin — Zvonimir's Lost Secret

🎭Your Mission

You are King Zvonimir's most trusted royal archivist in 11th-century Knin, Croatia, tasked with a critical mission: retrieve a precious hidden document before invaders reach the

Immerse yourself in medieval Dalmatia, where King Zvonimir established the seat of his kingdom, and uncover the secrets of Knin Fortress.

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

Knin Museum (Muzej Knin)optional
€3. Explore collections from antiquity to the medieval period, with artifacts from Zvonimir's reign and Roman occupation.
Optionnel
/pers.
Knin Fortress (Kninska tvrđava)optional
€5. Access the entire fortress site, King Zvonimir's royal seat, and admire strategic views of the Krka valley.
Optionnel
/pers.
Dalmatian dish tasting at 'Kod Ante' restaurantoptional
€15-25. Savor local specialties like 'peka' (meat and vegetables cooked under an iron bell) or fresh seafood, typical of Dalmatia.
Optionnel
/pers.
Excursion to Krka National Parkoptional
€10-20. Explore the waterfalls and lakes of this protected natural park, a few kilometers from Knin, created in 1985.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your quest for Zvonimir's secret begins in front of the majestic Kninska tvrđava, Knin Fortress. Built in the 11th century, this fortified enclosure of nearly 4 hectares, with its 2 to 3-meter thick walls, served as the royal residence under King Zvonimir's reign (1075-1089). This major strategic point of medieval Dalmatia controlled the Krka valley, essential for trade and defense. As you search for the first clues, you walk in the footsteps of the Croatian rulers who shaped this land.

Continuing your exploration of Knin Fortress, you discover inscriptions and coats of arms hidden on its ramparts. These vestiges evoke the defensive role of this structure, which withstood numerous sieges over the centuries. The fortress, mentioned in documents from Zvonimir's reign, is a testament to medieval Croatian power. Your path then leads you to Crkva sv. Barbare, St. Barbara's Church, located in Knin's city center. Rebuilt after the Croatian War (1991-1995), this 17th-century parish church, dedicated to the patron saint of fortresses and soldiers, is a spiritual and historical anchor for Knin's inhabitants.

Returning inside the walls of Knin Fortress, you pass through areas that were once residential and military quarters. The rugged terrain and observation points offered by the fortress highlight its importance in controlling the Krka valley, a vital trade route connecting the Adriatic coast to the hinterland since the 11th century. Your journey then takes you to Muzej Knin, the Knin Museum. This museum houses collections documenting Knin's history from the medieval period to the present day, including artifacts from Zvonimir's reign and archaeological evidence of Roman and Byzantine occupation of the region.

The itinerary brings you back one last time to Knin Fortress, where the clues become more precise, guiding you towards the urban traces of the medieval plan under King Zvonimir, within the historic intra-muros district of Knin. This network of cobbled streets and white limestone houses, typical of Dalmatian architecture, was restored after 1995 to preserve its authentic urban fabric. Here you perceive the echo of medieval trade and invasions that marked this historical corridor, with the Krka River and its surrounding valley being a protected natural landscape, including Krka National Park created in 1985 nearby.

Your quest concludes in Trg Ante Starčevića, Ante Starčević Square, the urban heart of medieval and modern Knin. Named after Ante Starčević (1823-1896), a key figure in Croatian independence, this square was the city's historic administrative and commercial center, a traditional gathering place since the 19th century. By deciphering the final clue, you not only uncover Zvonimir's secret but also gain a deep understanding of Croatian historical heritage, medieval archaeology, and the significance of Knin in Dalmatia. This thematic tour of Knin offers an interactive visit to Dalmatian monuments, a true exploration of Knin's history.

1089
Death of King Demetrius Zvonimir, Knin capital of the Kingdom of Croatia.
1522
Knin captured by the Ottoman Empire, beginning a long occupation.
1995
Operation Storm: Knin Fortress is liberated by the Croatian army.

The Route

5-10 curated sites across the territory

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.

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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 · 14,90€

No calendar booking. Code sent immediately by email.

🔒 Secure payment · Code in 5 min · Free cancellation

Practical info

Starting point
In front of the main entrance of Knin Fortress, Ul. Tvrdjava
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.5 km
Fortress and city center
Accessibility
Partial
Uneven terrain, stairs
🌐
Languages
17 languages
Built-in translation

Why this route?

🏰

Millennia-old Fortress

Explore one of Croatia's largest fortresses, a witness to centuries.

🇭🇷

Heart of the Kingdom

Discover Knin, former royal capital and symbol of Croatian identity.

💥

Historical Turning Points

Relive key moments, from medieval kings to modern conflicts.

Knin's memory, a truth forever etched.

Every stone has a story, every era its secret.

★ 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

Immerse yourself in medieval Dalmatia, where King Zvonimir established the seat of his kingdom, and uncover the secrets of Knin Fortress.

14,90€
1 phone
28,60€
2 phones
41€
3 phones
52,20€
4 phones
62,10€
5 phones
69,50€
6 phones
77€
7 phones
84,40€
8 phones
91,90€
9 phones
99,30€
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 · 14,90€

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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