🕒 No date to pick · Code valid 1 year · Play whenever you want
Get my code
Uncover the cursed whispers of the Mayenne River that guard a noble family's lost secret. Solve the spectral riddles echoing through Laval's ancient stones to break the ancestral curse before it claims another soul.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed heart of Laval, the Mayenne River has long murmured secrets of betrayal and hidden treasure from the 15th century
In the shadowed heart of Laval, the Mayenne River has long murmured secrets of betrayal and hidden treasure from the 15th century. Legend tells of the Laval dynasty's black sheep, a cunning lord who buried a chest of gold and incriminating letters beneath the city's landmarks to evade his rivals. But his greed invoked a river spirit's curse: ghostly whispers that lead seekers astray, dooming them to wander eternally unless the truth is unearthed. These spectral voices still haunt the Old Bridge, the Château de Laval, and the surrounding historic sites, revealing clues only to those bold enough to listen. As modern heir to this haunted legacy, you must decipher the murmurs, outwit the curse, and locate the buried cache before the river's wrath rises again. Traverse the compact medieval core—from the basilica's crypts to the ramparts' forgotten corners—piecing together the conspiracy that has silenced generations. Will you expose the lord's final deceit and silence the whispers forever?
« Stories never die as long as there is someone to listen to them. »— Popular Mayenne proverb
Long before the industrial era, the inhabitants of Laval and its surroundings lived to the rhythm of popular beliefs. Nature, and particularly the Mayenne River, was perceived as a place inhabited by invisible forces. From fairy tales to stories of fantastic creatures, local folklore has shaped the region's identity, offering magical explanations for unexplained phenomena.
These legends, often transmitted orally, served to educate, warn, or simply entertain. They are deeply rooted in the Laval landscape, with every bridge, every rock, every wood having its own fantastic story. It is this intangible heritage, made of whispers and imagination, that this game invites you to rediscover, by searching for the words of a forgotten formula that has the power to seal or release these ancient spirits.
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
Immerse yourself in the heart of Laval's folklore. Discover local tales and myths, rooted in history and landscapes.
See the legendary creatures of the Mayenne come to life in augmented reality. A dragon, fairies, goblins... imagination becomes reality.
Reconstruct a secret incantation. Each act brings you closer to the formula that will seal or release the river's spirits.
Where the river sings stories, myths come alive.
Listen carefully, folklore calls you.
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.
Soyez le premier à partager votre expérience.
Did you play les murmures de la mayenne? Check the email you received after your game to leave a verified review.
Dive into the legends of Laval. The incantation is ready, adventure awaits you to seal the destiny of the Mayenne.
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
More destinations, tours & urban treasure hunts across the country
The medieval marvel between sky and sea
Corsair city and ramparts facing the ocean
Castle of the Dukes of Brittany and Jules Verne
First city liberated — from William to 1944
Its millennial abbey and legendary fair
Gold Beach & Mulberry artificial harbour
Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Pour une immersion complète dans le fleuve qui a inspiré tant de légendes, une croisière sur la Mayenne offre une perspective unique sur les paysages et les histoires évoquées par le jeu.
Le château, avec ses douves et ses tours, est au cœur de nombreuses légendes mayennaises de dames blanches et de fantômes. Explorer son enceinte peut résonner avec les contes fantastiques de la ville.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.