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1777: John Paul Jones builds his corsair ship Ranger in Portsmouth. A vital cryptogram is stolen by a traitor. Recover the fragments, decipher the code, and unmask the spy before the ship sails into revolution!
📱 1 to 10 phones · 1 team per phone · Independent codes
Portsmouth, New Hampshire, 1777
Step into the shoes of a Continental Navy scout on a secret mission, tasked with deciphering a stolen cryptogram before it falls into the wrong hands. Your investigation begins in Portsmouth, a strategic port city in New Hampshire, where Commander John Paul Jones himself resided. On a walking route of approximately 1.5 km, which will take you around 135 minutes, you will traverse Portsmouth's most significant historical sites. At each stage, your phone becomes a crucial tool: augmented reality clues appear on colonial facades, ancient cobblestones, and monuments. An 18th-century maritime map emerges in Market Square, a coded message displays on North Church, and the ghost of a spy guides you through Ceres Street. This is a flexible, self-paced exploration, allowing you to uncover the history of Portsmouth and New Hampshire, from colonial foundations to the challenges of the young republic. More than an outdoor escape game: an interactive tour immersed in 250 years of history, with anecdotes revealed at each stop and confidential sites that classic guides often miss.
Les vrais lieux que vous explorerez au fil de l'aventure. Énigmes en réalité augmentée à chaque étape.
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
Your quest for the cryptogram begins in front of the John Paul Jones House Museum, at 43 Middle Street. Built in 1758 in Georgian style, this historic home was the residence of the famous Commander John Paul Jones, founder of the American Navy, during the Revolution. This museum, open to the public since 1876, is an ideal starting point to grasp Portsmouth's naval significance. As a scout, you'll search here for the first clues left by your contact, perhaps hidden in the corners of this colonial architecture, which directly witnessed 18th-century naval war strategies.
Next, proceed to Prescott Park, a 6.5-acre waterfront park established in 1902 along the Piscataqua River, accessible from Marcy Street. Designed by landscape architect John Nolen, this location offers a peaceful contrast to the bustling port. Although later than the revolutionary period, the park, with its historic gardens and sculptures, overlooks a river that was essential to Portsmouth's trade and defense throughout the 19th century. Your mission leads you here to observe past and present river traffic, looking for coded messages that might travel by water.
The path then leads you to Market Square, the historic heart of Portsmouth, a commercial and administrative center since the 17th century. This square houses Portsmouth City Hall, a 19th-century neoclassical building, and has always been a place for civic gatherings. It is here, amidst the city's hustle, that your contact might have left a crucial clue. North Church, an Episcopal church built in 1732 with its characteristic steeple on Chapel Street, stands nearby. Its parish registers, dating from its founding, are treasures of information on Portsmouth's religious and civic life, potentially useful for your investigation.
Your journey takes you to the Old Custom House, a federal building from 1817 located at 147 Pleasant Street. This building housed the American customs administration, highlighting Portsmouth's commercial and port importance in the 19th century. Its restored federal architecture testifies to the prosperity of the era. Not far away, the Portsmouth Athenaeum, founded in 1817 on Athenæum Street, houses collections of manuscripts and documents covering local history since the 17th century. These places, symbols of intellectual and commercial heritage, are key points for a scout seeking to understand the information networks of the time.
Finally, your quest takes you to Ceres Street, a historic street in the port district, a center of maritime trade since the 18th century, then to Pierce Island Park, accessible by bridge. Ceres Street, named after the Roman goddess of agriculture, reflects the importance of grain trade and retains its period buildings. Pierce Island Park, a former fortified island converted into a public park, offers panoramic views of the Piscataqua River and historical perspectives on Portsmouth's coastal fortifications. It is here, facing the open sea, that the last fragment of the stolen cryptogram might finally reveal its secret, completing your mission in this New Hampshire maritime heritage site.
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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Immerse yourself in the maritime history of the American Revolution.
Thwart a plot and unmask a double agent.
Decipher a secret message from Captain Jones.
The fate of the Revolution rests in your hands.
Will you live up to Captain Jones' legacy?
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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Dive into the heart of Portsmouth, New Hampshire, following the footsteps of the American Revolution and the maritime secrets that forged a nation.
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 conspiracy behind the missing Portsmouth Papers, stolen after the Revolution's first naval clash. Decipher clues across historic landmarks to expose the traitor's plot before the secret is lost forever.

Uncover the Corsair submarine's hidden legacy in Portsmouth. Decode secret messages from its final voyage, outwit a Cold War conspiracy, and reveal the truth buried in the naval shadows before it's lost forever.

Uncover the hidden accounts of Portsmouth's Revolutionary privateers. Decipher coded entries in a lost merchant ledger to expose a conspiracy of war profiteering and smuggled fortunes.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
20€. Explorez plus de 30 maisons historiques du XVIIe au XXe siècle, dont le bâtiment Pitt Tavern de 1766, et découvrez la vie quotidienne dans ce quartier colonial de Portsmouth.
15€. Visitez le sous-marin expérimental USS Albacore, lancé en 1953 à Portsmouth, et apprenez son rôle dans l'histoire navale américaine.
30-50€. Savourez des huîtres fraîches et des spécialités de fruits de mer locaux, reflétant la riche tradition de pêche de Portsmouth et du New Hampshire.
25-40€. Montez à bord pour une croisière commentée et admirez les phares et les forts historiques qui protégeaient l'entrée du port de Portsmouth.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.