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Uncover the dark secret of Peter the Great's cursed register, hidden amid the bones of workers who built St. Petersburg. Decode clues at imperial landmarks to expose the truth before the curse claims you.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1703, Peter the Great founded St
You are Domenico Trezzini, architect to Tsar Peter the Great, tasked with overseeing the construction of the new imperial capital in St.
Petersburg, 1703. Your mission begins at Ioann
Delve into the origins of Saint Petersburg, following in the footsteps of Peter the Great, a visionary builder and ruthless strategist.
« Ioannovsky Most »— Inscription on Ioannovsky Bridge, Saint Petersburg, 1825
Your journey begins at Ioannovsky Bridge, a 24-meter drawbridge built in 1824-1825 by William Hasset, named in honor of Tsarevich John. It is the main entry point to the Peter and Paul Fortress, founded by Peter the Great in 1703 to defend the city from the Swedes. Crossing this bridge, which was fixed until 1887 before being modified for river navigation, you enter the 28-hectare enclosure where the Tsar personally supervised the fortification works, even sleeping on site in a cabin, thus laying the first stones of Saint Petersburg.
Inside the Peter and Paul Fortress, you discover the Saints Peter and Paul Cathedral, erected between 1712 and 1733 by your colleague Domenico Trezzini. This is where Russian tsars have rested since Peter the Great, who died in 1725. Not far, the Summer Garden, created as early as 1704 by the Tsar, offers a contrast of serenity. Peter the Great had European trees planted there, seeking to acclimatize Western flora over 11 hectares, opening this landscaped garden to the public in 1716. This place was restored in 1818 after the 1824 floods that submerged Saint Petersburg, demonstrating the city's resilience.
Leaving the fortress, you head towards Peter the Great's House, a modest 11x5 meter wooden dwelling built in 1714 on the banks of the Neva. The Tsar lived there from 1714 to 1716, supervising the construction of his new capital from this simply furnished residence. Preserved as a museum since 1800 and classified as a historical monument in 1911, this house was visited by Nicholas II in 1897, highlighting its importance in the history of the Romanov dynasty and the heritage of Saint Petersburg.
Your journey then leads you to the Rostral Columns, erected in 1810 on the Exchange embankment of the Neva by Jean-François Thomas de Thomon. Standing 32 meters high, they are adorned with ship prows captured from the Turks and Swedes, symbolizing Russian naval victories, a theme dear to Peter the Great who initiated the construction of the Exchange in 1703. These columns, visible from the Summer Garden and less than 500m from Ioannovsky Bridge, recall the maritime power the Tsar desired for the city of Saint Petersburg.
The Menshikov Palace, built between 1706 and 1714 for Alexander Menshikov, Peter the Great's favorite, represents the Baroque splendor of that era. With its 22 rooms on two floors, this palace on Vasilyevsky Island, 800m walk from Ioannovsky Bridge via the Summer Garden, even temporarily housed Peter the Great in 1711. After Menshikov's exile in 1725, it was confiscated and transformed into a naval cadet corps in 1731. This walking tour in Saint Petersburg offers a concrete immersion into the vision of a tsar who shaped a city, its monuments, and its naval history, from the Admiralty founded in 1704 as a shipyard where Peter the Great launched the first vessel in 1706.
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
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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Explore the iconic sites of the forced construction of the imperial city.
Uncover the heavy human toll paid for Peter the Great's dream of grandeur.
Decipher the clues to reveal a secret document recording lost souls.
Greatness has a price, often paid in the shadows.
Uncover the forgotten sacrifices of Saint Petersburg.
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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Delve into the origins of Saint Petersburg, following in the footsteps of Peter the Great, a visionary builder and ruthless strategist.
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

Solve the WWII Nazi plot that vanished the Amber Room. Decode hidden clues across Catherine Palace grounds to reveal its secret 1944 hiding place.

Uncover the secret pardon that saved Dostoevsky from execution on Semyonovsky Place. Decode hidden messages and imperial clues across his haunted St. Petersburg haunts to reveal the Tsar's mercy plot.

Uncover the hidden conspiracy behind the February Revolution of 1917. Decipher coded messages, expose the Tsar's final secrets, and track the revolution's pivotal moments across the imperial heart of Saint Petersburg before the dynasty falls.

Decipher the coded messages left by Leningrad's survivors during the 900-day blockade. Uncover the truth hidden in monuments, archives, and memorials across the city's heart.

Uncover the daring 2006 heist that stole 221 priceless jewels from the Hermitage's Diamond Treasures Room. Decode clues hidden across imperial palaces to recover the forgotten treasures before they vanish forever.

Uncover the secret of the amber moths hidden in Tsarskoye Selo. Solve the Nazi looters' cipher to reveal the Amber Room's final hiding place before it's lost forever.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
20€. Explorez l'une des plus grandes collections d'art au monde, logée dans le Palais d'Hiver, ancienne résidence des tsars de Saint-Pétersbourg.
15€. Admirez l'architecture néoclassique et la coupole dorée de cette cathédrale qui peut accueillir 14 000 fidèles, visible depuis l'Amirauté.
50€. Découvrez les ponts illuminés de Saint-Pétersbourg et les façades historiques depuis les eaux de la Neva, offrant une perspective unique sur la ville fondée par Pierre le Grand.
30€. Explorez la célèbre Chambre d'Ambre et les jardins somptueux de cette résidence impériale, à une heure de Saint-Pétersbourg.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.