Monaco-Ville — Decipher Mata Hari's Final Transmission
Uncover the spy's last coded message hidden across Monaco-Ville's Belle Époque landmarks before her secrets vanish forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
It is 1917
Monaco-Ville — Decipher Mata Hari's Final Transmission
You are a French intelligence operative from the Deuxième Bureau, January 1917, on special assignment in Monaco.
You arrive at Port Hercule, following the trail of Margare
Decipher Mata Hari's final coded messages in the alleyways of Monaco-Ville, where Europe's most famous spy lived her last months of freedom in 1916.
The story that haunts this land
Monaco becomes a strategic crossroads for European secret services in 1914. Port Hercule, developed from 1524 under Charles V and rebuilt in 1927 under Louis II, welcomes the yachts of diplomats and intelligence agents. Mata Hari regularly disembarks there between 1915 and 1916, using her dancer cover to meet her contacts. The 300-meter Albert Édouard pier becomes the scene of nocturnal meetings where information about Franco-German troop movements is exchanged.
La Condamine Market, built in 1910 in a metal structure inspired by Parisian halls, serves as a clandestine mailbox. Its 200 stalls on two levels covering 1,500 m² allow messages to be hidden in vegetable baskets. Mata Hari meets Captain Vadim Maslov there, a wounded Russian officer from the front, who unwittingly transmits military intelligence to her. Traditional Mediterranean merchants, present since the 17th century, turn a blind eye to these suspicious activities.
Rue Princesse Caroline, the former 'rue Droite' of Monaco-Ville's historic quarter, becomes the main artery of the espionage network. This paved road linking La Condamine to the Prince's Palace, widened in 1860, houses safe houses for double agents in its 17th-18th century patrician houses. Mata Hari rents a discreet apartment there, from where she observes the comings and goings of European diplomats. The typical Ligurian architecture offers numerous hiding places in the thick walls.
Sainte-Dévote church, dedicated to the 4th-century Corsican martyr and rebuilt in 1870, conceals Mata Hari's secret codes in its underground sanctuary dating from the 10th century. The 15th-century polychrome statue houses a compartment where the spy hides her final transmissions before her arrest in February 1917. On January 27, 1917, during the Sainte-Dévote Festival, she attends the ritual burning of the boat and slips her ultimate message intended for her German handlers.
Your mission ends at Saint-Martin gardens, created in 1827 by Honoré V on the site of the former Minimes convent gardens. These 2 hectares near the Prince's Palace conceal Mata Hari's war treasure: 100,000 gold francs hidden near the 1848 fountain. By deciphering her codes, you understand that the spy may have been innocent, victim of a Franco-German conspiracy. You take away the truth about one of the Great War's most controversial espionage cases, engraved in Monaco's ancient stones.
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?
Dancer and Spy
Follow the path of the infamous Mata Hari, Belle Époque icon and controversial figure of espionage.
Encrypted Messages
Untangle a web of hidden clues and secret codes left in the streets of La Condamine.
Riviera Glamour
Immerse yourself in the luxurious atmosphere of Monaco, a meeting place for European elite and secret agents.
Under the Monaco sun, shadows dance.
Decipher the fate of a legendary spy.
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 Monaco-Ville — Decipher Mata Hari's Final Transmission similar to a treasure hunt?
Same spirit: search, deduce, find. But here the "treasure" is a full story to piece together in eight stops. Each stop gives you a fragment of the final code. Eight fragments later, you've cracked it.
Q02Can we split Monaco-Ville — Decipher Mata Hari's Final Transmission across two days?
Yes — your code stays active and progress is saved. You can start Saturday afternoon, finish Sunday morning. Some players actually prefer this format to make the most of a full weekend on site.
Q03Can we play Monaco-Ville — Decipher Mata Hari's Final Transmission as a couple?
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.
Q04What if we get stuck on a puzzle?
Three hint levels per puzzle, with a small increasing time penalty. If truly stuck after level 3, you can skip the step (45-min penalty). The point: nobody stays blocked and goes home frustrated.
Adventurer reviews
Be the first to share your experience.
Did you play l enigme de la riviera? Check the email you received after your game to leave a verified review.
Your turn to play
Decipher Mata Hari's final coded messages in the alleyways of Monaco-Ville, where Europe's most famous spy lived her last months of freedom in 1916.
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 La Condamine, Monaco
See all games in La Condamine, Monaco→More ideas for self-guided walking tours, scavenger hunts & city quests in the same city
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.
Fontvieille — Secret Expansion Protocol
Uncover Prince Rainier III's clandestine protocol behind Fontvieille's daring sea expansion. Decode hidden stakes, rival threats, and buried blueprints to expose the truth before it's lost forever.
The Monk's Deception — Uncover Malizia's Fortress Gambit
Decode the legendary 1297 ruse: how did François Grimaldi seize the Genoese fortress disguised as a monk? Decipher clues hidden in Monaco's oldest monuments to expose the true strategy behind the Grimaldi dynasty's founding conquest.
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.
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.