The Princess's Cipher — Uncover the Vix Dynasty's Hidden Trade Secret
Decipher the lost records of a Celtic princess to expose the hidden trade empire that made her legendary. Solve riddles across her palace, tomb, and merchant routes to unlock her dynasty's greatest secret.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 500 BC, a Celtic princess ruled the crossroads of Europe from Mont Lassois
The Princess's Cipher — Uncover the Vix Dynasty's Hidden Trade Secret
You are a junior researcher for the French National Museum of Antiquities, autumn 1953, newly assigned to Châtillon-sur-Seine.
Following the discovery of the V
Delve into the mystery of ancient trade that shaped the power of the Lady of Vix, a Celtic princess buried around 500 BC near Châtillon-sur-Seine.
The story that haunts this land
Your quest begins at Place de la Résistance, in the heart of Châtillon-sur-Seine. This central square, facing east, will serve as the starting point for the first clue leading you to Mont Lassois. It is here, in this historic and administrative gathering place, that the thread of Celtic commercial secrets begins to unravel. The nearby Rue du Bourg, a medieval cobbled alley, was once a vital axis for trade, and its ancient buildings will whisper the echoes of the Gaulish commerce that passed through the Bourgogne-Franche-Comté region more than two millennia ago.
The route then takes you to the Musée du Pays Châtillonnais – Trésor de Vix, an essential site for understanding the Lady of Vix. It was here, during excavations at Mont Lassois in 1953, that an unparalleled archaeological treasure was unearthed: a Greek krater 1.64 m high, weighing 208 kg, and dated to the 6th century BC. This monument testifies to a secret and flourishing trade between Greece and the Gaulish Celts, revealing the power and influence of the Lady of Vix, buried around 500 BC with gold artifacts.
After admiring the Treasure, the itinerary leads you towards Mont Lassois, the Celtic oppidum of the late Hallstatt period, a site spanning approximately 3 km² which was the center of the Vix necropolis. Culminating at an altitude of 377 m, this central point of the route offers you a unique perspective on the excavations led by René Joffroy in 1953, which revealed the princely tomb of the Lady of Vix. The Pont Saint-Pierre, crossing the Seine, offers a contemplative break before you climb the slopes of this emblematic mountain in the history of Châtillon-sur-Seine.
Your exploration continues with the discovery of the stele of the Princess of Vix's tomb and the Mont Lassois Oppidum itself. These remains immerse you directly into the daily life of this Celtic civilization. Not far away, the Saint-Vincent Church, a 13th-century Gothic edifice classified as a historical monument, reminds you of the continuity of human occupation and the layers of history that have accumulated in Châtillon-sur-Seine. Its 16th-century bell tower-porch dominates the historic center, offering a striking contrast to the ancient narratives you are deciphering.
Finally, your adventure will lead you to the Chapelle Saint-Marcel and Place Marmont, concluding this thematic circuit in Bourgogne-Franche-Comté. The Source de la Douix, 2 km from Châtillon-sur-Seine, although not directly on the route, is a powerful karst spring, legendary for its sudden floods and linked to the ancient tales of the region. This interactive visit to Châtillon-sur-Seine will have allowed you to explore the late Hallstatt archaeological heritage, understand the history of the Lady of Vix, and discover the commercial secrets of a forgotten Celtic civilization, leaving an unforgettable memory of this outdoor treasure hunt.
A game, a guided tour and a heritage guide — all in one
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. »
How does it work?
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.
Want to go deeper?
Places tied to your adventure — optional entries, totally up to you · per person
The Route
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.
How does it work with a group?
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.
- ✓All codes are independent — play at the same time OR separately, each team advances at its own pace.
- ✓Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
- ✓More than 10 phones or need a personalized quest? Discover custom tours.
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
Practical info
Why this route?
The Vix Krater
Discover the history of this monumental vase, a masterpiece of Greek antiquity found in Gaul.
Secret Trade Routes
Reconstruct the trade networks that connected the Celts to Mediterranean civilizations.
The Gallic Princess
Unravel the secrets of this mysterious and powerful figure who reigned over Mont Lassois.
Untangle the skein of ancient routes!
The power of the Princess of Vix extended far beyond her lands...
9 features nobody else has
OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.
AR treasure chest
A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.
AR narrator character
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.
Magic golden letters
At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.
Written + audio narration
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.
360° radar + vibration
A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.
Heritage storytelling
Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.
Progressive AI hints
3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.
AR selfie memento
At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.
Zero app to install
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
Frequently asked questions
Q01Is this an outdoor escape game in Châtillon-sur-Seine and Mont Lassois or a classic scavenger hunt?
Both at once: it's an outdoor escape game — team puzzles, narration, clues, final code — but in the streets of Châtillon-sur-Seine and Mont Lassois, at your pace. The classic scavenger hunt mechanic plus augmented reality through the camera.
Q02Can we take a break mid-trail?
Of course. Stop at a café, have lunch, resume later: your progress is saved. Many players bake a meal break into the trail, especially with families.
Q03Is The Princess's Cipher — Uncover the Vix Dynasty's Hidden Trade Secret good for a hen / stag party?
Great fit: no costume required, the team really collaborates (it's not a linear path), and the final code earns you a souvenir photo. Pick a calm time slot — early afternoon usually.
Q04Best season to explore Châtillon-sur-Seine and Mont Lassois like this?
Spring and autumn are the best seasons: mild temperatures, fewer tourists, gorgeous light. Summer is also great but go for early morning before 11 or late afternoon. Winter is perfectly playable, especially in southern cities — Châtillon-sur-Seine and Mont Lassois often feels more authentic then.
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Your turn to play
Delve into the mystery of ancient trade that shaped the power of the Lady of Vix, a Celtic princess buried around 500 BC near Châtillon-sur-Seine.
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
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