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An old journalist's ledger reveals secret tunnels and hidden Gold Rush fortunes beneath Chinatown's streets. Decipher his clues to uncover the lost speakeasy treasure before it's gone forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
San Francisco, 1870
You are a young reporter for the San Francisco Chronicle in 1906, investigating the untold stories and forgotten figures of Chinatown's resilient community.
You begin your quest at Dragon'
Delve into the secret alleys of San Francisco, where the echoes of the Grant Avenue tunnels whisper tales of a Chinatown forged by gold and perseverance.
« San Francisco is the only city that has all the advantages of a great metropolis without any of its disadvantages. »— Rudyard Kipling, American Notes, 1889
Your journey in San Francisco begins under the imposing Dragon's Gate, on Grant Avenue, the official entry point into Chinatown. This gate, rebuilt in 1970 in the style of traditional Chinese village gates, symbolizes the resilience of a community that survived the 1906 earthquake and exclusionary policies. As you pass through its arches, you enter a space where Chinese traditions have taken root on Californian soil, creating a unique micro-world within the city of San Francisco. The first waves of Chinese immigrants arrived as early as the 1840s, drawn by the Gold Rush, and quickly shaped this neighborhood.
A short walk away, Portsmouth Square welcomes you. This historic park, in the heart of San Francisco, was the site of the first raising of the American flag in California in 1846 and the nerve center of Old San Francisco. For the Chinese community, it was an essential public space, a place for gathering and communication. In the 19th century, 'tongs' or clan associations held meetings here, and news from China was shared. It was also here that the transcontinental telegraph was completed in 1861, connecting the East Coast to the West and strengthening San Francisco's strategic position.
Your path then leads you towards Old Saint Mary's Cathedral, on Grant Avenue. Erected in 1854, it was California's first Catholic cathedral and an architectural beacon for pioneers. Its red brick facade and twin towers have witnessed the evolution of Chinatown, serving as a landmark in a constantly changing neighborhood. The church survived the great fire of 1906, which devastated much of San Francisco, making it a symbol of perseverance. It continued to serve as a refuge and support for the city's diverse communities.
Exploring Ross Alley, one of Chinatown's most famous alleys, you discover a different side of the district. This narrow alley, often overlooked by hurried tourists, houses traditional artisan workshops and discreet shops. For decades, clandestine printing presses operated here, and secret activities took place, hidden from view. This spot reminds you that Chinatown has always had its hidden corners, where daily life and community rituals were maintained despite external pressures. The nearby House of Nanking is an example of authentic Cantonese cuisine that has endured for generations.
Your exploration concludes at the intersection of Columbus Avenue and Grant Avenue, a crossroads symbolizing the meeting of cultures in San Francisco. After traversing the labyrinthine alleys and historic squares, you gain a comprehensive understanding of the ingenuity and resilience of the Chinese community. From Dragon's Gate to Hotaling Place, each step has revealed a layer of this neighborhood's history, from secret tunnels to public landmarks. This journey leaves you with a profound appreciation for how Chinatown has shaped San Francisco's identity, forging a vibrant culture and rich heritage in California.
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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Dive into tales of an era of madness and fortune.
Explore the secret alleys of America's oldest Chinatown.
Outsmart the codes to reveal the paths of yesteryear's speakeasies.
Ghosts of the past whisper at street corners.
Unveil San Francisco's buried mysteries.
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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Delve into the secret alleys of San Francisco, where the echoes of the Grant Avenue tunnels whisper tales of a Chinatown forged by gold and perseverance.
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 hidden manifesto fragments scattered by Beat poets across North Beach. Decode their rebellious code before it's lost forever in San Francisco's bohemian heart.

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The ghosts of Alcatraz's failed escape plans haunt the waterfront. Decode spectral clues across Fisherman's Wharf to expose the forgotten plot that still echoes from the Rock.

Uncover the hidden clues of a vanished 1849 prospector who stashed a fortune in forgotten gold amid the Gold Rush chaos. Decode his trail before rivals claim it.

Uncover the hidden conspiracy behind Harvey Milk's assassination. Decode clues from his Castro campaign HQ to expose the threats that silenced the pioneer of LGBTQ+ rights.

Decipher the hidden truth behind San Francisco's catastrophic 1906 earthquake and fire. Uncover suppressed evidence, conflicting testimonies, and a conspiracy to conceal the real cause of the city's destruction.
Where history meets the Pacific's mysteries
Heart of the California Gold Rush
Heart of the Wild West silver rush
Where time stands still in the California Gold Rush
Gold Rush echoes in a charming Victorian town
The City of Angels, where Hollywood glamour meets iconic beaches.
Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
5-15$. Goûtez aux dim sum traditionnels, fraîchement préparés, dans une boulangerie emblématique de Stockton Street.
10$. Explorez des archives et des expositions sur l'histoire des Chinois en Californie depuis la ruée vers l'or.
Gratuit. Découvrez l'ingénierie des célèbres tramways de San Francisco et leur histoire depuis 1873.
Gratuit (dons appréciés). Le plus ancien temple taoïste de Chinatown, dédié à la déesse de la mer Mazu, fondé en 1852.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.