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Uncover General Lee's lost Special Order 191, the blueprint that nearly handed victory to the Confederacy. Decode battlefield clues to reclaim this pivotal Civil War secret before it vanishes forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
September 17, 1862: The bloodiest single day in American history unfolds along Antietam Creek
You are a Union intelligence operative, dispatched to Antietam in September 1862.
Your mission: to recover General George B. McClellan's lost battle order before it falls into
Immerse yourself in the heart of Maryland, where blood forever stained the fields of Sharpsburg, following the footsteps of the Battle of Antietam, one of the bloodiest days in American history.
« Official motto of the State of Maryland: Fatti maschii, parole femine. »— Official motto of the State of Maryland
Your quest begins at the Antietam National Battlefield Visitor Center in Sharpsburg, Maryland. Opened in 2002, this modern building is the official starting point for tours, housing maps, uniforms, and period artifacts from the Battle of Antietam. Here, you collect your first clues, scrutinizing the permanent exhibits to understand troop movements on September 17, 1862. From there, you head to the Dunker Church, officially the Church of the Brethren, built in 1852 by the pacifist Dunkard Baptists. This edifice, faithfully reconstructed in 1962 for the Civil War's centenary, served as a command post and field hospital, a central location for unraveling the day's secrets.
Continue your investigation north, where The Cornfield, an agricultural area, was the scene of fierce fighting. This plot, planted with corn, saw thousands of casualties during successive assaults by Union and Confederate forces, lasting approximately three hours. It is here, in the heart of this now infamous field, that you must locate the exact position where McClellan's order might have been lost. Your path then leads to Bloody Lane, a sunken road where Confederate troops entrenched themselves. The name "Bloody Lane" attests to the massive losses suffered by both sides, with a Union assault finally breaking through the line after violent clashes. Monuments and explanatory panels help you reconstruct regiment movements and the extent of casualties, crucial information for your mission in Maryland.
Your route takes you to the Pry House Field Hospital Museum, a farmhouse built around 1830 that served as General George B. McClellan's headquarters during the Battle of Antietam. After the battle, the house became a field hospital where thousands of wounded were treated. Today, the museum features exhibits on Civil War military medicine and the role of figures like Clara Barton. It's a prime location for discovering medical documents and testimonies that might contain fragments of the lost order. Clues are sometimes hidden in the most unexpected places, amidst period surgical instruments.
Next, cross Antietam Creek, a natural waterway that played a strategic role as a Confederate defensive line. The creek is particularly famous for Burnside's Bridge, an early 19th-century stone bridge defended by a small Confederate contingent against waves of Union assaults. This preserved historic monument, with its panels detailing troop movements and human losses, is a key stop for understanding the Union army's delays. Fishing is now permitted on Antietam Creek, but your objective is to find clues along its banks, near this iconic bridge, to reconstruct the events of September 17, 1862.
Finally, your investigation leads you to the Maryland Monument, located on the Antietam battlefield. This monument, dedicated in the early 20th century, commemorates Maryland soldiers who fell during the Civil War. Near Bloody Lane, it offers a regional perspective on the battle. After exploring these iconic sites of Sharpsburg, Maryland, you will have gathered all the pieces of the puzzle. This journey will have allowed you not only to recover the lost order but also to grasp the complexity and tragedy of the Battle of Antietam, a day that marked the history of the United States and the heritage of the National Park Service.
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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Uncover the tactics and decisions that shaped one of the most critical battles of the Civil War.
Walk through the iconic locations where thousands of men fought and perished, from the North Woods to Burnside Bridge.
Unravel the mystery of Special Order 191 and its impact on the fate of the Confederacy and the Union.
Unravel the mystery that turned an audacious plan into a missed opportunity, and a day into a bloodbath.
Your quest: reconstruct a liaison officer's logbook and the role of the lost orders.
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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Immerse yourself in the heart of Maryland, where blood forever stained the fields of Sharpsburg, following the footsteps of the Battle of Antietam, one of the bloodiest days in American history.
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
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.

Accès libre. Explorez les expositions permanentes pour une immersion profonde dans la bataille d'Antietam, avec cartes, uniformes et artefacts d'époque.

Accès libre. Découvrez la médecine militaire de la guerre de Sécession et le rôle de Clara Barton dans cet hôpital de campagne historique.
Prix indicatif : 20-30€. Savourez la spécialité culinaire du Maryland, des galettes de crabe frais, dans un restaurant local de Sharpsburg.
Nécessite une licence de pêche du Maryland. Profitez du calme des berges du ruisseau, là où les combats faisaient rage en 1862.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.