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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.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1972, the USS Corsair (SS-435), a legendary WWII submarine built at Portsmouth Naval Shipyard, was decommissioned amid whispers of a classified final mission
Step into the boots of privateer captain John Quelch, returning to Portsmouth in 1704 after a mysterious Atlantic expedition. You must recover treasure hidden in the city before colonial authorities discover your illegal activities. Your investigation leads you 1.5 km through the most secret sites of New Hampshire's historic port. At each stop, open your phone: ancient maps appear on colonial facades, coded messages reveal themselves on Memorial Bridge stones, John Paul Jones' spirit whispers secrets from his 1758 residence. In ~165 minutes traversing Portsmouth, you trace the privateers' route between Market Square and Badger's Island, from Moffatt-Ladd House gardens to State Street wharves. More than an outdoor escape game: an interactive visit immersed in 300 years of maritime history, with anecdotes revealed at each stop and hidden sites that classic guides forget.
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
Portsmouth established itself from the 17th century as New Hampshire's major port, attracting merchants and privateers to the Piscataqua River. Your route begins at the Old South Meeting House, civic gathering place where naval expeditions were decided. From there, you reach Market Square, historic commercial center since 1640, where merchants sold privateers' prizes. The central fountain still witnesses secret transactions between captains and ship owners, while Portsmouth City Hall from 1817 dominates the square with its Greek Revival architecture.
Crossing Memorial Bridge leads you to Badger's Island, former strategic anchorage zone for privateer ships. Built in 1923, this bridge spans the New Hampshire-Maine border, controlling river access to the Atlantic. The island served as discreet mooring for captains like John Quelch, who unloaded their cargo before returning to Portsmouth. The 19th-century fortifications recall this passage's military importance, guardian of colonial trade routes.
Your return to Portsmouth leads to Moffatt-Ladd House, a 1763 manor built by merchant John Moffatt. This Georgian residence illustrates the wealth of merchants linked to maritime trade and privateer expeditions. Its 0.5-hectare colonial garden preserves 18th-century species, witnessing port prosperity. The salons hosted negotiations between ship owners and captains, sealing expedition contracts to the Caribbean and South America.
State Street Wharf reveals Portsmouth's privateer activity heart. These former commercial wharves saw captains' prizes disembark, under the complicit eye of port taverns. The proximity of John Paul Jones House, residence of the U.S. Navy founder during his Portsmouth stays between 1777-1781, recalls links between privateers and official navy. This 1758 residence, built for John Langdon, sheltered secret meetings where revolutionary naval missions were planned.
Bow Street closes your investigation in the alignment of colonial residences where captains and ship owners lived. This street parallel to the port, dating before 1700, preserves Portsmouth Historic District architecture. You measure the privateers' legacy: a port city shaped by three centuries of maritime commerce, where each facade tells the epic of men who defied the Atlantic.
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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Reconstruct a navigation map coded by Jones himself.
Explore the legacy of a legendary Revolutionary figure.
Unravel secrets hidden in architecture and streets.
The past holds truths that the future must know.
Unveil the secret testament of a hero.
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 murky waters of Portsmouth where 18th-century privateers hid their treasures between merchant wharves and captains' mansions.
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 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.

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!
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.

8€. Explorez la demeure de 1758 du fondateur de la U.S. Navy avec ses meubles d'époque et son jardin colonial restauré.

10€. Visitez ce manoir géorgien de 1763 et ses jardins historiques plantés d'essences coloniales authentiques.
35€. Savourez homard du Maine et huîtres locales dans ce restaurant farm-to-table installé dans une maison coloniale de 1766.
25€. Naviguez sur les traces des corsaires avec vue sur les fortifications de Badger's Island et les chantiers navals historiques.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.