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Decipher the secret signals and hidden plans behind Washington's audacious coup de main—the surprise attack that turned the tide of the Revolution. Track the midnight crossing paths to expose the plot that saved America.
📱 1 to 10 phones · 1 team per phone · Independent codes
December 1776: The Continental Army teeters on collapse
You are a trusted intelligence operative for General Washington, tasked with uncovering a treacherous plot on the eve of the Trenton crossing, December 1776.
The Continental Army teeters on collapse. Washington
Washington's daring strategy that changed the course of the war
« « These are the times that try men's souls. » »— Thomas Paine, The American Crisis, 1776
After months of humiliating retreats and bitter losses in New York and New Jersey, Washington's Continental Army was on its knees. The harsh winter of 1776 threatened to decimate already dwindling ranks, thinned by desertion and disease. The American Revolution seemed doomed before it could even take flight. Faced with this desperate situation, George Washington knew he had to strike a major blow, not only to win a military victory, but above all to restore the faith of his people and his troops in the cause of independence.
On December 25, 1776, under the cover of a freezing snowstorm, Washington and his men crossed the Delaware River. At dawn on December 26, they launched a surprise attack on the Hessian garrison in Trenton, commanded by Colonel Johann Rall. The battle was swift and decisive: the Hessians, caught off guard, were routed. This unexpected victory, followed by the Battle of Princeton a few days later, breathed new life into the Revolution, marking a major psychological and strategic turning point in the War of Independence.
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
5-10 curated sites across the territory
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.
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Dive into the heart of a daring plan that saved the American Revolution.
Relive the challenges of an icy night when the fate of a nation was decided.
Explore the places where an unexpected victory changed the course of history.
Audacity changes the course of history.
In Trenton, Washington proved that determination can overcome numerical superiority.
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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Decipher the General's secret plans and outwit the enemy to restore hope to America. The Revolution counts on you!
1 purchase = 1 phone. Play several on the same device.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.

Pour plonger dans le quotidien des soldats hessois et britanniques juste avant l'attaque surprise de Washington, et comprendre leurs stratégies de défense.

Montez au sommet du monument pour une vue panoramique des champs de bataille, une perspective stratégique sur les mouvements de troupes de 1776.

Visitez la maison de William Trent, qui fut le quartier général du Colonel Rall, commandant des troupes hessoises. Un lieu clé pour comprendre la psychologie de l'ennemi de Washington.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.