Monaco-Ville — The Broken Princely Vow
Uncover the broken vow that unleashed a curse on Monaco's princes. Decode clues at ancient monuments to break the spell before it claims the next heir.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed cliffs of Monaco-Ville, a sacred vow was shattered centuries ago, igniting a curse that has haunted the Grimaldi dynasty
Monaco-Ville — The Broken Princely Vow
You are a Genoese chronicler, dispatched to Monaco-Ville in 1297 on a clandestine assignment.
Your mission: investigate the mysterious disappearance of an oath signed by François Grimal
Trace back to the broken vow of 1297 that sealed the Grimaldi dynasty's fate on the Rock of Monaco.
« Deus protector noster »— Grimaldi Dynasty, Official motto of Monaco's princely family
The story that haunts this land
Monaco-Ville opens before you through Place du Palais, daily stage of the changing of the guard since 1966. This 5,000 m² esplanade preserves traces of François Grimaldi's first oath, the one that transformed a coup de force into dynastic legitimacy. The Prince's Palace unfolds its 200 rooms and 33,000 m² before you, rebuilt between 1612 and 1715 after destructions that may have swept away the original vow's archives. In the Throne Room, used since the 17th century, the promises of Grimaldi princes to their people still echo.
François Grimaldi's statue, erected in 1895 by Gian Lorenzo Bernini, confronts you with the dynasty's founder. This 3-meter bronze immortalizes François called 'the Cunning,' who conquered the Rock on January 8, 1297, disguised as a monk. But what oath had he sworn to the Monégasques to transform this ruse into legitimate rule? Notre-Dame-Immaculée Cathedral, built between 1875 and 1903, houses the tombs of Rainier III and Grace Kelly, buried in 1982. Its 22-meter Provençal Romanesque façade replaces a 12th-century church, silent witness to the first princely vows.
Saint-Martin Gardens, created in 1816 on a former 16th-century bastion, spread across 1.2 hectares of former princely vegetable gardens. Their 400 plant species hide the 1895 fountain, secret meeting point for Grimaldi emissaries. Sainte-Dévote Chapel, built in 1070 and rebuilt in 1683, honors Monaco's patron saint since her boat's legendary wreck in 334. Its 18th-century baroque frescoes witnessed princes renewing their dynastic vows, perpetuating a tradition born with François Grimaldi.
The Ramparts Path guides you 1 km along 13th-century medieval fortifications, restored in 1990. These stone walls protected princely archives for seven centuries, jealously guarding the lost oath's secrets. Fort Antoine, built in 1701 by Jacques-Henri de Goyon against the Spanish, concludes your quest. Its 40 by 20-meter dimensions, 12 original cannons, and transformation into a 300-seat theater since 1971 tell the evolution of a principality born from a promise.
Your investigation in Monaco-Ville reveals more than a broken vow: it unveils how a dynasty takes root in stone and collective memory. From Palace to ramparts, each monument bears Grimaldi traces, from François the conqueror to Rainier III the builder. The motto 'Deus protector noster' still resonates in these streets, reminding that some promises cross centuries, even broken, even forgotten, to shape a territory's identity and a people's soul.
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 Forgotten Scrolls
Reconstruct the medieval register of an ancient guild, guardian of a well-kept ancestral secret.
The Weight of a Vow
Dive into the heart of a dynastic enigma, between myth and historical reality, concerning the Grimaldis.
The Secrets of the Rock
Explore the alleys and ramparts where every stone bears witness to a tumultuous history.
The past never remains silent, it whispers through the centuries.
Unveil the secrets of an eternal dynasty.
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 Monaco-Ville (The Rock) 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 Monaco-Ville (The Rock), 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 Monaco-Ville — The Broken Princely Vow 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 Monaco-Ville (The Rock) 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 — Monaco-Ville (The Rock) often feels more authentic then.
Avis des aventuriers
Soyez le premier à partager votre expérience.
Did you play le serment brise de monaco? Check the email you received after your game to leave a verified review.
Your turn to play
Trace back to the broken vow of 1297 that sealed the Grimaldi dynasty's fate on the Rock of Monaco.
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
Other escape games in Monaco-Ville (The Rock)
See all games in Monaco-Ville (The Rock)→More ideas for self-guided walking tours, scavenger hunts & city quests in the same city
Monaco-Ville — Unravel the Grimaldi Curse
Decipher the dark secrets behind Monaco's royal weddings. Uncover hidden clues in palaces and chapels to break a centuries-old Grimaldi curse before midnight strikes.
Rocher de Monaco — Shadow of the Rock
Uncover the dark secret haunting the Rocher de Monaco. Decode ancient symbols from forgotten Grimaldi vaults to expose a centuries-old conspiracy threatening the principality's legacy.
Monaco-Ville — The Whispers Underground
Uncover a clandestine resistance network hidden beneath Monaco's palaces during WWII. Decipher coded messages left by freedom fighters in the heart of the Principality.
Monaco — Rainier III's Hidden Legacy
Uncover the secret industrial legacy of Prince Rainier III hidden in plain sight. Decode clues from his bold building projects to reveal a forgotten bequest that transformed the Principality forever.
Monaco-Ville — The General's Shadow
Uncover the General's shadow haunting Monaco-Ville. Decode his final orders hidden across palaces and forts to expose a thwarted coup that nearly toppled the Grimaldis.
Monaco-Ville — The Grimaldi Conspiracy
Uncover the hidden scandal buried beneath seven centuries of Grimaldi rule. Decipher coded messages in frescoes, expose a conspiracy that nearly toppled the dynasty, and solve the mystery of the Prince's secret.