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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
In 1076, Knin Fortress became the beating heart of the Croatian Kingdom under King Dmitar Zvonimir
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.
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
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.
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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Get my code · 14,90€No calendar booking. Code sent immediately by email.
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Explore one of Croatia's largest fortresses, a witness to centuries.
Discover Knin, former royal capital and symbol of Croatian identity.
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.
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 medieval Dalmatia, where King Zvonimir established the seat of his kingdom, and uncover the secrets of Knin Fortress.
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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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
5€. Accédez à l'ensemble du site de la forteresse, siège royal du roi Zvonimir, et admirez des vues stratégiques sur la vallée de la Krka.
10-20€. Explorez les cascades et les lacs de ce parc naturel protégé, à quelques kilomètres de Knin, créé en 1985.
3€. Explorez des collections allant de l'Antiquité à la période médiévale, avec des artefacts du règne de Zvonimir et de l'occupation romaine.
15-25€. Savourez des spécialités locales comme le 'peka' (viande et légumes cuits sous une cloche en fer) ou des fruits de mer frais, typiques de la Dalmatie.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.