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Uncover the buried blueprint of 1889 Seattle: a secret plan hidden in Pioneer Square's underground after the Great Fire. Decode clues across 8 landmarks to expose the conspiracy before it's lost forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1889, the Great Seattle Fire razed 31 blocks of Pioneer Square, but from the ashes rose a radical rebirth
You are an urban archaeologist in 1965 Seattle, joining Bill Speidel's groundbreaking quest to reveal the city's buried past.
Your mission: decipher the “Buried Blueprint,”
Uncover Seattle's tumultuous past, a city that rose from its ashes to build its future upon the foundations of a buried world.
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
Your quest begins in the heart of Seattle, near the Pioneer Square Pergola, at the corner of Yesler Way and 1st Avenue. This 24-foot-high wrought-iron structure, with its 4 pillars and 6-ton suspended trellis, was built in 1909 as an entrance to the Alaska-Yukon-Pacific Exposition. Restored for $300,000 in 1993 after a partial collapse, and again in the 1970s after vandalism, it marks the historic entrance to the district and was designated a National Historic Landmark in 1977. It is here, under its shadow, that the first clues of your GPS treasure hunt materialize, immersing you in the history of this Washington city.
Continue towards the Pioneer Building, a five-story edifice constructed in 1892 by James Clise. Its 50,000 square feet and Richardsonian Romanesque architecture make it Seattle's first reinforced concrete building. This monument, designated a National Historic Landmark in 1978, housed the offices of the Seattle Post-Intelligencer from 1892 to 1912 before being restored in 1977 for $2.5 million. The walls of this building whisper the history of pioneers and builders, figures like financier L.C. Smith, whose path will soon lead you to another symbol of the city.
Your journey then takes you to the Smith Tower, completed in 1914. Seattle's first skyscraper, standing 38 stories and 484 feet tall, it was designed by G. W. Lawton for L. C. Smith. Its public observatory on the 35th floor, with its Chinese Room decorated the same year, offers breathtaking views of the city. Designated a Seattle Landmark in 1984, it housed the offices of the L.C. Smith Typewriter Company. This iconic Seattle site reveals fragments of the industrial and financial past of the Washington region, a key piece in the puzzle of the “Buried Blueprint.”
Cross Yesler Way, this historic thoroughfare laid out in 1853 by Henry Yesler, Seattle's first mayor. Formerly known as 'Skid Road' for the sliding of logs to his mill in the 1850s, it was renamed Yesler Way in 1895 after his death. This artery, the southern boundary of the Pioneer Square district, stretches about 1.5 km through the central area. Nearby, the Grand Central Arcade, built in 1889, with its Victorian architecture and 100-foot covered arcade, connects 1st and 2nd Avenue, housing shops and galleries since the 1890s. Restored in the 1970s, it has been part of the Pioneer Square National Historic District since 1970, reflecting Seattle's daily life.
Finally, your exploration immerses you in the Seattle Underground. These remnants of original streets and buildings, buried after the Great Fire of 1889 and the raising of street levels in 1907, are now explored via tunnels 20-30 feet below the current level. Guided tours, launched in 1965 by Bill Speidel, have attracted over 1.5 million visitors. This site, part of the Pioneer Square National Historic District since 1970, is key to understanding how Seattle literally rebuilt its identity. You leave this Washington themed circuit not only with the "Buried Blueprint" deciphered, but also with a new perspective on the resilience and ingenuity of this city.
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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Discover the causes and consequences of the event that reshaped Seattle.
Explore the historic brick buildings that rose from the ashes of the old city.
Uncover the secrets of Seattle's Underground by observing elements visible from the exterior.
Reconstruct the secret plan that allowed Seattle to rise from its ashes and hide its past.
The past is always beneath your feet.
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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Uncover Seattle's tumultuous past, a city that rose from its ashes to build its future upon the foundations of a buried world.
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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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
29€. Explorez des collections d'art variées, des œuvres amérindiennes aux installations contemporaines, à quelques pas du centre-ville de Seattle.
Accès libre. Imprégnez-vous de l'ambiance du marché historique de Seattle, fondé en 1907, avec ses poissonniers volants et ses artisans locaux.
8.95$ (aller-retour). Profitez d'une vue imprenable sur la skyline de Seattle et les montagnes olympiques depuis le pont du ferry de Washington State.
Variable. Découvrez l'art de la torréfaction et dégustez des cafés rares dans une expérience immersive unique à Seattle.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.