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Uncover the hidden codes and secret routes of the Underground Railroad in downtown Cincinnati. Decode clues from safe houses and abolitionist hideouts to expose a lost freedom cipher before it's silenced forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed alleys of 19th-century downtown Cincinnati, a perilous network of safe houses and hidden passages formed the final gateway to freedom for thousands fleeing slavery across the Ohio Rive
You are a conductor on the Underground Railroad, navigating the perilous routes of 1850s Cincinnati.
Your mission: retrace the hidden paths of freedom seekers, from the Ohio River
Dive into the murky waters of the Ohio River and follow the secret lanterns of the Underground Railroad that freed over a thousand souls.
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 journey begins at the National Underground Railroad Freedom Center, opened in 2004 on the banks of the Ohio River. This 16,000 m² museum was built on the site of a former slave warehouse, a stark reminder of the past. Here you will discover the original Slave Pen from 1830, rebuilt stone by stone, a direct relic of that dark period. Cincinnati was a crucial city, having helped over 1000 fugitives reach Canada before 1865. The building, designed by architect Richard Fleischman, with its six-story tower, symbolizes the ascent to freedom and marks the starting point of your exploration of Ohio's heritage.
Walking along the Ohio River, you reach the Serpentine Wall, an integral part of Smale Riverfront Park. This 300-meter curved wall, built in 1970 from precast concrete, is inspired by English Victorian walls and offers breathtaking views of the John A. Roebling Suspension Bridge. Integrated into The Banks urban development in 2010, it connects historical sites along the river. Although modern in appearance, this promenade has witnessed countless lives and testifies to Cincinnati's transformation, a city that, under its 2023 motto, aims to be a "Junction of the Future" while honoring its past.
Your path then leads you to the Harriet Beecher Stowe House, located at 2390 Victory Parkway, about 2 km from the Freedom Center in the Walnut Hills neighborhood. It was in this house, built in 1833, that Harriet Beecher Stowe lived between 1849 and 1850. Her observations of fugitive slaves crossing the Ohio River were the direct inspiration for her major work, Uncle Tom's Cabin, published in 1852. Restored in 2016, this dwelling is now an abolitionist museum, a key site for understanding the roots of the Underground Railroad Network to Freedom (NPS) and Cincinnati's commitment to the fight against slavery.
Crossing Smale Riverfront Park, opened in 2015 over 18 hectares, you head towards the John A. Roebling Suspension Bridge. This park, adjacent to the Freedom Center and the Serpentine Wall, houses the historic 1894 Carousel, restored with its 44 hand-carved animals. It is here, on these banks, that secret passages of the Underground Railroad were documented as early as the 1840s. The Roebling Bridge, completed in 1867, 322 meters long, was the first to use twisted steel wire cables. Located 500m from the Freedom Center, it served as a crossing point for fugitives to the free North, a vital link to freedom along the Ohio River Historic Trail.
Your journey concludes in The Banks district, developed since 2011 over 45 acres between the Freedom Center and Smale Park. This residential and commercial mix is the venue for events like Oktoberfest, celebrated since 1976 on historical sites once frequented by abolitionists. It is in the immediate vicinity of these docks that over 1000 slaves crossed the Ohio to freedom before 1865. The Black Brick Historic District, with its 1830s buildings linked to the slave trade, anchors this neighborhood in a complex and essential history of the Cincinnati Historic District. By completing your interactive tour of Cincinnati, you will have explored a city where every stone tells a story of courage and the quest for freedom.
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.
Ready to live this adventure?
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Uncover the codes and signals of a clandestine network that saved thousands of lives.
Unearth forgotten narratives and secret identities beneath the city's cobblestones and monuments.
Cross the invisible line between the shadow of slavery and the hope of a new life in Ohio.
The voices of the past still resonate for those who know how to listen.
Decipher the Shadow Register and honor their memory.
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 the Ohio River and follow the secret lanterns of the Underground Railroad that freed over a thousand souls.
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
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Decipher the hidden routes and secret signals of Cincinnati's Underground Railroad network. Uncover the coded messages that guided enslaved people to freedom along the Ohio River.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Billet adulte ~18$. Explorez en profondeur la Slave Pen de 1830 et les expositions dédiées à la lutte pour la liberté.
Entrée gratuite, dons appréciés. Plongez dans l'environnement qui inspira Uncle Tom's Cabin en 1852.
Prix variés. Le plus ancien marché public de l'Ohio, ouvert depuis 1852, pour savourer des produits locaux.
À partir de 25$. Admirez le pont Roebling et les rives de Cincinnati depuis les eaux historiques.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.