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Decipher the mystery of Tom's Baby: a legendary 13.5-pound gold nugget that vanished from the Denver Mint's vault. Track down the conspiracy that erased 5 pounds of Colorado's most famous treasure.
📱 1 to 10 phones · 1 team per phone · Independent codes
July 1887: Two prospectors, Tom Groves and Harry Lytton, struck gold near Breckenridge—a crystalline nugget so massive Tom carried it wrapped in a blanket like an infant
Step into the shoes of Dana Crawford, the visionary who saved Larimer Square from demolition in the 1960s. Your mission: to find Denver's lost golden books, precious registers hidden in the city's nooks and crannies. At each stage, open your phone: augmented reality archive documents appear on historic facades, old maps overlay the cobblestone streets, and key figures from Colorado's history whisper clues. Over approximately 135 minutes of walking, covering 1.5 km, you explore Denver's iconic sites at your own pace, no car needed. More than an outdoor escape game: an interactive tour immersed in the city's 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
Votre quête commence à Confluence Park, un espace de 13 acres créé en 2003 dans le cadre du projet de restauration de la Platte River et de la South Platte River. C'est ici, à environ 1,6 km au nord de Union Station – un hub ferroviaire historique rénové en 2014 pour 54 millions de dollars – que le passé industriel de Denver rencontre son renouveau écologique. Traversez le pont piétonnier du magasin phare REI, ouvert en 2007 et long de 850 pieds, reliant Commons Park à cet espace vert vital pour la ville de Denver. Les eaux murmurent les récits des pionniers et des bâtisseurs qui ont façonné le Colorado.
Poursuivez vers Larimer Square, la première ville de Denver, établie en 1872. Ici, les bâtiments de la 16th Street datent des années 1880, et le quartier a été désigné National Register of Historic Places en 1971. Ce bloc historique abrite plus de 40 édifices de l'époque victorienne, restaurés dans les années 1960 par Dana Crawford, qui a empêché leur démolition. C'est le cœur battant du LoDo Historic District, un témoignage vibrant de la persévérance et de la vision de conservation du patrimoine du Colorado. Votre regard se pose sur les détails des façades, cherchant les indices laissés par le temps.
Votre parcours vous mène le long de Blake Street, une artère adjacente à Larimer Square et faisant partie intégrante du LoDo Historic District. Cette rue, située à environ 1,9 km au sud-est de Confluence Park par des chemins piétonniers, résonne des pas des entrepreneurs et des mineurs qui ont fait la fortune de Denver. William Byers, fondateur du Rocky Mountain News en 1859, a sans doute arpenté ces pavés, témoin de l'expansion rapide de la ville. Les secrets des livres d'or pourraient bien être gravés dans la mémoire de ces pierres anciennes.
La balade continue vers le Colorado State Capitol, dont la construction a débuté en 1886 et s'est achevée en 1908. Son dôme de 55 pieds, gainé de feuilles d'or du Colorado, symbolise la richesse minière de l'État. Situé dans Civic Center Park, à 2,9 km au sud-est de Confluence Park, il abrite 13 types de marbre provenant des carrières du Colorado, dont le marbre Yule des années 1890. Chaque marche, jusqu'aux 272 menant au dôme, raconte une page de l'histoire législative et minière du Colorado State Capitol Historic Site.
Votre exploration culmine à la Byers-Evans House Museum, construite en 1883 par William Byers. Cette demeure de style victorien italien, de 10 500 pieds carrés, a été restaurée pour refléter la période 1880-1910 et est devenue un musée en 1976. Elle fut la résidence de la famille du Gouverneur John Evans de 1889 à 1902 ; Evans fut gouverneur territorial de 1862 à 1865. Adjacent à Civic Center Park, à 3,1 km de Confluence Park, ce site incarne l'élégance et l'influence des figures qui ont bâti Denver. Les livres d'or, si bien dissimulés, attendent d'être découverts dans ces lieux chargés d'histoire, offrant une immersion unique dans le patrimoine du Colorado et de Denver.
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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Explore prospecting techniques and the myths of hidden veins that shaped Denver's history.
Decipher an old map of Denver's early streets and identify key locations of the gold rush.
Relive the tales of fortune and disillusionment of pioneers through authentic archive excerpts.
Uncover the secrets of the rush.
Your quest begins now.
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, WhatsApp, 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 vibrancy of Denver, where Colorado's history unfolds between gold nuggets and restored Victorian architecture.
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.

20-25€. Explorez des collections d'art amérindien et occidental, ainsi que des expositions contemporaines dans une architecture audacieuse.

18-20€. Visitez l'ancienne demeure de Margaret Brown, survivante du Titanic et icône de Denver, restaurée à son faste victorien.
Prix variés. Découvrez les brasseries locales du LoDo Historic District, un quartier réputé pour sa scène brassicole innovante depuis les années 1990.
Gratuit. Profitez d'une promenade ou d'une navette gratuite le long de cette artère commerçante conçue par I.M. Pei en 1982, reliant plusieurs quartiers du centre de Denver.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.