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Uncover the Cold War espionage plot linking Geneva's Reformation walls to CERN secrets. Decode historic clues to expose the traitor who nearly sabotaged particle physics breakthroughs.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowy heart of Geneva's Old Town, during the tense Cold War era, a brilliant physicist working at nearby CERN vanished without a trace
You are a resistance liaison agent, deep within Geneva in 1943, tasked with securing vital information hidden within the city's monuments.
Your ~165-minute journey, a
Delve into the secrets of Geneva, city of the Reformation and crossroads of nations, where every stone whispers the history of fierce independence.
« After darkness, light »— Official motto of Geneva, 16th century
Your mission begins at Geneva-Cornavin Station, inaugurated in 1858 and designed by Guillaume Fatio. This imposing 120-meter-long neoclassical structure was the starting point for international railway links to France, Italy, and Germany. A commemorative plaque recalls its crucial role in resistance movements during World War II, marking the start of your investigation into Geneva's heritage. It is here that information transits, hidden in the flow of travelers and urban symbols. The city of Geneva opens its doors to you, revealing its layers of history.
Next, cross the Pont des Bergues, built in 1834 to connect Île Rousseau to downtown Geneva. 155 meters long, this white limestone structure is named in honor of the Bergues brothers, 16th-century Genevan merchants. Rebuilt in 1862 after a partial collapse and restored in 1999, it is a testament to Geneva's resilience. From this bridge, the Geneva Jet d'Eau, built in 1891, rises 140 meters high. Initially a pressure regulation system for the Rhône hydraulic plant, it became Geneva's official symbol in 1920, visible up to 15 km away on a clear day.
Continue towards Rue du Rhône, the main commercial artery since the 16th century. This 800-meter street is lined with prestigious 18th and 19th-century buildings, housing Geneva's watchmaking and luxury center. It was the former link road between the Rhône river port and the old town, a vital axis for trade. The watch manufacturers Patek Philippe (since 1839) and Vacheron Constantin have their historic headquarters here. Place du Molard, an ancient 13th-century medieval stronghold, was a strategic crossroads for trade routes to the Rhône and the Alps from the Middle Ages.
The Geneva City Hall, whose initial construction dates back to 1455, with successive wings added until the 18th century, is your next stop. Its Genevan Renaissance facade and 52-meter-high clock tower (1540) house the seat of the Council of State. The double-revolution staircase (1610) is an architectural masterpiece, allowing two simultaneous accesses. Nearby, Saint-Pierre Cathedral of Geneva, begun in 1160 and consecrated in 1232, is a Swiss historical monument. Its Calvin's Pulpit (1564) recalls John Calvin's 28 years of preaching, a pillar of the Protestant Reformation in Geneva.
Your journey finally leads you to Parc La Grange, a 16-hectare estate acquired by the City in 1918, formerly owned by the de Candolle family. This park, one of Geneva's largest, houses a historic rose garden created in 1946 and labeled a botanical site. Although the 18th-century Château La Grange is closed, the park offers a perspective on Geneva's evolution beyond its fortifications. This exploration of Geneva's heritage will have allowed you to trace the complex history of Geneva Old Town, from the Protestant Reformation to its contemporary role, a true thematic circuit at the heart of Geneva's monuments.
Upon completing this GPS treasure hunt, you will have explored an essential part of Geneva's history. Each site, from Geneva-Cornavin Station to Parc La Grange, has revealed a facet of its past, from resistance movements to its status as a city of the Reformation. This interactive visit, avoiding beaten paths, offers you a deep understanding of Genevan heritage. You leave not only with memories but a new perspective on what to do in Geneva, enriched by this immersive exploration of its monuments and its role as a local UNESCO Heritage site.
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.
The game downloads to your phone on start. Once the "✓ Downloaded" indicator appears, everything works without data — narration, AR, GPS and puzzles. Perfect abroad without a data plan.
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.
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Dive into the world of cutting-edge research, coveted by spies.
Thwart attempts to steal intellectual property and know-how.
Identify and neutralize enemy agents infiltrated in the scientific community.
Knowledge is power, but its control is the ultimate power.
Safeguard the future of science before it is corrupted.
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.
Neither. Everything plays in your browser (Safari, Chrome) after you tap your activation link. No PDF to print, no download. The trail lives in your phone, that's it.
Usually 2 to 4 km of total walking, within 1.5 km as the crow flies from the start point. The route is designed to be walkable at a relaxed pace, no public transport needed.
Great two-person format. Narration is dramatic without overdoing it, puzzles are designed to spark conversation. Ideal for new relationships or anniversaries — you discover the city and coordinate on puzzles simultaneously.
Morning between 10 and 11, or early afternoon around 2 PM, is ideal. You still have daylight ahead, Old Town of Geneva, Switzerland is less crowded, and the light is better for camera clues.
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Delve into the secrets of Geneva, city of the Reformation and crossroads of nations, where every stone whispers the history of fierce independence.
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 ideas for self-guided walking tours, scavenger hunts & city quests in the same city

Uncover the hidden Cold War spy network that operated from Geneva's shadows. Decode clues from Reformation-era sites to expose traitors and reclaim a lost microfilm before it's gone forever.

Decode the secret alphabet Rousseau hid across Geneva's Old Town before his manifesto burned. Uncover the cipher that could rewrite Enlightenment history.

Uncover the secret manuscript hidden during the stormy night at Villa Diodati when Frankenstein was born. Decode clues across Cologny to expose the truth before it's lost forever.

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.

Uncover the hidden archives of the League of Nations buried in Geneva's cellars. Decode a forgotten protocol that could rewrite interwar history before it's lost forever.

Geneva, 1553: Uncover the Consistory's secret trial. Decode clues from Reformation landmarks to expose a forbidden manuscript and save a heretic's life before the shadows claim another victim.
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Between lake and mountains, the pearl of the Swiss Jura.
UNESCO watchmaking city, between art and precision
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European crossroads, city of art and culture on the Rhine.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Gratuit. Découvrez des collections archéologiques, beaux-arts et arts appliqués retraçant l'histoire de Genève et de l'humanité.
30-50€. Savourez une fondue au fromage traditionnelle dans un restaurant typique de la Vieille Ville de Genève, après votre exploration.
15-25€. Admirez le Jet d'Eau et les rives de Genève depuis le lac, une perspective unique sur le paysage genevois.
13€. Explorez les origines et l'impact de la Réforme protestante dans un bâtiment historique face à 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.