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Uncover the dark secret of the Joanine Library's bat guardians and the hidden medieval prison beneath. Solve the ancient code to expose what the scholars concealed from King John V.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1717, King John V commissioned the opulent Biblioteca Joanina within the University of Coimbra, the oldest university in Portugal and former Royal Palace
You are a royal archivist in Coimbra, 1728, serving King John V of Portugal.
Your delicate mission: locate a lost ancient manuscript that could shake the foundations of
Discover Coimbra, a thousand-year-old university city, by unravelling the best-kept secret of the Biblioteca Joanina, a UNESCO-listed Baroque gem.
Your journey in Coimbra begins at Largo da Portagem, a central square by the Mondego River that, since the Middle Ages, has seen travelers and academics converge. Here, the statue of King Denis I, founder of the Universidade de Coimbra in 1290, reminds you of this city's long history. From here, you begin the ascent towards the historic campus, a path taken by generations of students, and the heart of your quest for the lost manuscript. Each step on the cobblestones brings you closer to the educational and architectural heritage, classified UNESCO in 2013, of this city in central Portugal.
Pass through the Porta Férrea, an 18th-century wrought-iron gate, built around 1740, adorned with allegorical statues of Justice and Truth. This main entrance to the historic campus leads you directly to the Pátio das Escolas, the epicenter of the Universidade de Coimbra. Looking up, the Torre da Universidade de Coimbra, 32 meters high and built between approximately 1493 and 1515, stands, its belfry marking the academic schedule for centuries. It is here, in the heart of this national monument, that the first clues are revealed, linked to student traditions and ancient knowledge.
Your investigation then leads you to the Via Latina, a historic gallery connecting the university buildings, and to the Jardim da Manga. This Renaissance garden, created for King John III between 1528 and 1532, was adjacent to the royal palace, converted into a university. Its octagonal fountains and covered galleries, with water sources symbolizing fertility, are a testament to 16th-century architectural ingenuity. The manuscript could have been hidden here, as royal gardens were often places of secrets and reflections, away from the prying eyes of Praça 8 de Maio.
Continue towards the Arco de Almedina, an 11th-century medieval gate, a remnant of Coimbra's Moorish walls. Restored in the 19th century, this arch bears a Latin inscription and is classified as a national monument. It marked the access to the old fortress that became the university. This historic passage, near the city center, represents a junction between eras, a place where civilizations met and where knowledge was exchanged, or lost. Your exploration of Coimbra's heritage brings you closer to the truth about the manuscript.
Finally, your quest culminates at the Biblioteca Joanina, built in 1717 during the reign of King John V of Portugal. This Baroque gem houses approximately 250,000 ancient volumes on exotic oak shelves, funded by Brazilian wealth. It is here that the secret of the guardians is revealed: bats, hunting insects at night, are the silent protectors of these precious works, their droppings being cleaned every morning. This national monument of the University of Coimbra, a UNESCO World Heritage site, bears witness to a living history and a continuous educational role, where your archivist mission concludes by revealing an unexpected facet of this emblematic place.
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.
At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.
Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.
Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.
Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.
A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.
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. »
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
8 stages through the city
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?
Get my code · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Uncover the unexpected role of these nocturnal creatures in manuscript preservation.
Delve into the secrets held within invaluable ancient works.
Admire the splendor and ingenuity of an architectural masterpiece.
Knowledge is a light that even darkness cannot extinguish.
Uncover the secret alliance between erudition and nature.
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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Discover Coimbra, a thousand-year-old university city, by unravelling the best-kept secret of the Biblioteca Joanina, a UNESCO-listed Baroque gem.
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
🪙+24 TripCoins granted with your booking
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
10€. Abrité dans l'ancien palais épiscopal, il présente des collections d'art sacré, de sculpture et d'archéologie, avec un cryptoportique romain unique à Coimbra.
Gratuit. Fondé en 1131, c'est l'un des plus importants monastères médiévaux du Portugal, abritant les tombes des premiers rois du Portugal, D. Afonso Henriques et D. Sancho I.
20-30€. Savourez ce plat traditionnel de chèvre cuit lentement dans un pot en argile, typique de la région du centre du Portugal, souvent accompagné d'un vin local de Bairrada.
15-25€. Découvrez Coimbra sous un autre angle lors d'une promenade relaxante sur le fleuve Mondego, offrant des vues uniques sur les rives de la ville historique et l'Universidade de Coimbra.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.