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1553: Uncover the hidden code in Michel Servetus' final breath, smuggled out before his execution at Champel. Decode the heretic's forbidden truth that defied Calvin and shook Geneva forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
October 27, 1553: Amid the flames on Champel's hill, Spanish theologian Michel Servetus whispered a final, forbidden secret to a trusted witness—a cryptic code challenging the Trinity doctrine and exp
You are a Consistory archivist in 1553 Geneva, tasked with reconstructing the events that sealed Michel Servet's fate.
Your mission takes you from Place Longemalle
Dive into the heart of Geneva, following the footsteps of a Reformation secret and a dearly bought freedom in the 16th century.
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
« Freedom of conscience and freedom of thought »— Implicit motto of Geneva post-1908 (Servet's repentance)
Your investigation begins at Place Longemalle, a historic crossroads in downtown Geneva. This square, located on the edge of the Old Town and close to the Champel district, offers direct access to medieval streets. From there, you reach Saint-Pierre Cathedral, whose construction began around 1160 and was completed in the 16th century. Its main facade, built between 1535 and 1560 in a late Gothic and Renaissance style, was the setting for Jean Calvin's sermons from 1541. Calvin's historic pulpit, still preserved, is a central point in Geneva's religious history.
Continue your journey along Rue Calvin, a historic street named in homage to the reformer (1509-1564). This street runs along the old buildings of the Consistory and Reformed institutions, leading you directly to Cour Saint-Pierre. This medieval inner courtyard, adjacent to Saint-Pierre Cathedral and dating from the 12th-16th centuries, was the historic seat of the Cathedral Chapter before becoming that of the Reformed Consistory from 1541. Its Gothic arcades are preserved, and an underground archaeological museum, resulting from 19th-century excavations, is accessible, revealing the layers of Geneva's history.
Next, cross the Pont de l'Île, a medieval structure from the 12th century, rebuilt in the 18th century after significant damage, connecting the Old Town to the Île de la Cité. This bridge was a strategic crossing point between the Champel districts and the administrative heart of Geneva. Your route then takes you to Parc des Bastions, created in 1880 on Geneva's old ramparts. This 14-hectare park houses the Reformation Wall, a 100-meter-long monument erected between 1909 and 1917, commemorating Jean Calvin (1509-1564), Guillaume Farel (1489-1565), Théodore de Bèze (1519-1605), and John Knox (1514-1572).
Parc des Bastions, a major tourist promenade area, is adjacent to the Geneva Library and the Rath Museum. It is a place where the Reformation heritage is strongly manifested. Your quest then leads you to the Champel district, an old residential area of the Protestant bourgeoisie, known for its picturesque streets and 16th-18th century residences. It was in this historic southern district of Geneva that Michel Servet's execution took place in 1553, an event that profoundly marked Geneva's history.
Your itinerary culminates at the Michel Servet Expiatory Monument, erected in 1908 in Champel, near the presumed site of his burning. This monument bears the inscription 'In memory of Michel Servet, burned as a heretic on October 27, 1553,' acknowledging the historical error of the Geneva Consistory and marking an official repentance by the Reformed Church. Michel Servet (1509-1553), a physician, theologian, and discoverer of pulmonary circulation, was executed for anti-Trinitarian heresy. This Swiss historical site allows you to understand the complexity of Geneva's history and the evolution of Reformed thought, offering a perspective on the values of 'Freedom of conscience and freedom of thought' that emerged after this episode. It's a Geneva visit that illuminates the past to better understand the present.
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?
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Reconstruct the posthumous message of a persecuted thinker.
Understand the theological and philosophical stakes of the 16th century.
Explore the emblematic sites linked to the tragic fate of Michael Servetus.
The light of reason never truly fades.
Liberate a legacy sealed by flames.
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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Dive into the heart of Geneva, following the footsteps of a Reformation secret and a dearly bought freedom in the 16th century.
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.
Gratuit. La plus ancienne maison privée de Genève, offrant un aperçu de la vie quotidienne médiévale et de l'évolution de la ville.
Environ 30-40 CHF. Savourez une fondue traditionnelle dans un restaurant de la Vieille Ville, une expérience culinaire locale authentique.
Environ 20-35 CHF. Admirez Genève et les Alpes depuis le lac, avec des vues imprenables sur le Jet d'Eau et les rives suisses.
13 CHF. Explorez l'histoire du protestantisme genevois et son influence mondiale, situé à côté de la Cathédrale Saint-Pierre.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.