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Decipher the vanishing of the Mediterranean monk seal from Bue Marino Grotto. Track clues across Cala Gonone's coastal landmarks to expose the truth behind the species' disappearance and unlock a Neolithic secret.
📱 1 to 10 phones · 1 team per phone · Independent codes
The monk seal—called 'bue marino' (sea ox) by Sardinian shepherds—inhabited the limestone caverns of Cala Gonone until the 1970s
You are the nephew of Dr.
Elias Marini, the marine biologist who vanished in Cala Gonone, Sardinia, in the autumn of 1982. Your uncle claimed to have
The forgotten secret of the monk seals of Grotta del Bue Marino
« « The 'bue marino' are the mirror of our wild soul. If we lose them, a part of us disappears too. » »— Dr. Elena Rossi, alleged excerpt from her journal, c. 1928
The Mediterranean monk seal (Monachus monachus) was once a common sight in the waters of Sardinia. Revered and feared, this creature, whose local name, 'bue marino' (sea ox), evokes its size and deep voice, was a key element of the coastal ecosystem. It sought refuge in the numerous caves and coves, some of which, like the world-famous Grotta del Bue Marino, became its last sanctuaries. Fishermen and shepherds from the Dorgali region shared a complex bond with these marine mammals, sometimes competing for resources but often coexisting in a precarious balance.
However, from the late 19th and early 20th centuries, the monk seal population experienced a drastic decline due to hunting, overfishing, and habitat destruction. The Grotta del Bue Marino, with its isolation and network of galleries, became one of the last strongholds where these seals were observed. The last confirmed sightings in the Dorgali area date back to the 1960s. Today, although some sporadic reappearances have been documented elsewhere in the Mediterranean, the monk seal has become a symbol of the fragility of marine biodiversity, its memory living on in legends and the cave's name.
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
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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Dive into the legends and biology of Sardinia's monk seals.
Explore wild Mediterranean landscapes between picturesque villages and majestic cliffs.
Unravel the forgotten observations of a pioneer and reconstruct her secret plan.
The whisper of the sea holds the secret of the monk seals...
Will you be the first to decipher it?
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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Uncover the forgotten plan of an audacious naturalist to save the last monk seals. Every cove, every rock tells a part of this forgotten story. Will you be the first to piece together their last hope?
1 purchase = 1 phone. Play several on the same device.
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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.
Pour explorer de l'intérieur le dernier sanctuaire des moines-phoques et admirer ses concrétions uniques, lié à l'acte 8.
Pour en apprendre davantage sur la faune marine sarde et les efforts de conservation, complétant les recherches de la Dr. Rossi.
Pour découvrir les artefacts liés aux anciennes civilisations de Dorgali et leurs liens avec la mer, approfondissant l'acte 3.
Offre une vue imprenable sur la côte où les moines-phoques étaient autrefois observés, donnant une perspective historique au récit.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.