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In 15th-century Krk, decipher the secret alphabet of a hidden Glagolitic codex before it's lost forever. Uncover the scribes' clues across historic landmarks to reveal the ultimate treasure.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the 15th century, as Venetian forces tightened their grip on the Adriatic, the island of Krk stood as a defiant bastion of Croatian culture
You are Antun Mahnić, Bishop of Krk and fervent promoter of Glagolitic script at the turn of the 20th century.
Your mission: uncover fragments of a forgotten cod
Delve into Krk's Glagolitic heritage, where stones whisper chronicles of Frankopan princes and bishop-builders.
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
« AVE MARIA GRATIA PLENA »— Latin inscription above the lintel of Velika Vrata, 1481
Your quest begins at the Cathedral of the Assumption of Mary, a Class I Croatian Cultural Monument, built in the 5th century on a 4th-century early Christian basilica. It is here, according to local chronicles, that Francis of Assisi preached in 1220. Bishop Andrea Soranzo added the 30-meter bell tower in 1453. Search for the 12th-century Glagolitic inscriptions in the apse, precious clues to your lost codex, and unravel the mysteries of this central site of Croatian Romanesque heritage.
Continue towards Frankopan Castle, constructed in the 12th century by the Dujam family and expanded in the 15th by the Frankopan dynasty. This residence of the princes of Krk until 1480, covering 5000 m², was the signing site of the Pactum Carniolense in 1420. The main tower, 20 meters high, and the 3-meter thick walls, will guide you through Krk's medieval intrigues, one of the gems among Kvarner's medieval villas.
Take Ulica Antuna Mahnića, a 12th-century paved medieval alley, an ancient via sacra leading from the cathedral to the castle. It is lined with 15th-16th century Gothic-Renaissance houses, with their carved stone portals. This artery, named after Bishop Antun Mahnić, testifies to the vitality of the European Glagolitic Route and leads you to the Church of St. Quirinus, built around 1100, with its semi-circular apse and 13th-century Glagolitic inscriptions.
Your journey then takes you to the Krk City Walls, urban ramparts erected from the 13th to 15th centuries over a perimeter of 1.2 km, incorporating Frankopan Castle with its 15th-century barbican. These defenses, restored in 1550 after the Ottoman attack of 1542, include 14 preserved watchtowers. Pass through Velika Vrata, the main Great Gate built in 1481 in Gothic-Venetian style, with its 6-meter arch and Frankopan coat of arms, a ceremonial entry point for kings and Doges of Venice.
Your exploration concludes in Vela Placa, the main medieval square formed in the 13th century, Krk's administrative heart with the communal palace built in 1449. This area, paved with local limestone and surrounded by Gothic arcades, was the setting for the Frankopan princes' judgments. By traversing the 2000 m² of this square, you will assemble the final pieces of your codex. This Kvarner thematic circuit will have provided you with an unforgettable interactive Krk visit, revealing the richness of Krk's history and its Glagolitic heritage.
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.
Ready to live this adventure?
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Decipher the ancient forms of the Glagolitic alphabet and unveil its secrets.
Immerse yourself in the history of the princes who protected Croatian letters.
Ink and stone whisper forgotten tales.
The past, an enigma to rewrite.
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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Delve into Krk's Glagolitic heritage, where stones whisper chronicles of Frankopan princes and bishop-builders.
1 purchase = 1 phone. Play several on the same device.
No calendar booking. Code sent immediately by email.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
5€. Explorez les collections archéologiques et ethnographiques pour approfondir l'histoire de Krk, du IVe siècle à nos jours.
Gratuit. Admirez des expositions d'art contemporain dans un bâtiment historique, ancienne église médiévale.
15-25€. Savourez le vin blanc autochtone de l'île de Krk dans une cave locale, souvent accompagnée de fromage de brebis.
Gratuit. Détendez-vous sur cette plage urbaine située à proximité des remparts de Krk, offrant une vue sur la mer Adriatique.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.