Riverfront Park — The Lost Blueprint of Expo '74
Decipher the hidden environmental manifesto buried beneath Expo '74's pavilions. Uncover why the world's smallest World's Fair became its most radical ecological statement.
📱 1 to 10 phones · 1 team per phone · Independent codes
May 1974: Spokane, population 170,000, hosted the world's first international exposition dedicated entirely to the environment
Spokane 1974: A Vision for a Greener World
May 1974: Spokane, population 170,000, hosted the world's first international exposition dedicated entirely to the environment. But beneath the gleaming pavilions and Cold War pageantry lay a dangerous secret—a manifesto so radical that it threatened corporate interests and government agendas. The fair's architects embedded coded warnings about pollution, resource depletion, and industrial collapse into the very design of Riverfront Park. Decades later, most of these messages were erased or forgotten. Your mission: walk the grounds where the Spokane River was reclaimed from railroad trestles and warehouses, visit the surviving pavilions and monuments, and reconstruct the lost environmental blueprint before it vanishes entirely. The clues are hidden in plain sight—in architectural details, in forgotten plaques, in the bones of the fair itself. Can you decode what the world refused to hear in 1974?
« « It is our hope that Expo '74 will inspire future generations to continue to improve the quality of life. » »— Dixy Lee Ray, Chair of the Atomic Energy Commission and environmental advocate, 1974
Expo '74: A Green Utopia in the Heart of Spokane
Spokane's Expo '74, held from May 4 to November 3, 1974, made history as the first World's Fair entirely dedicated to environmental issues. Facing a decaying downtown and Spokane River banks polluted by decades of railroad industrialization, city leaders, spearheaded by King Cole, audaciously proposed using a World's Fair to catalyze urban regeneration. They convinced the Bureau International des Expositions and the U.S. government of the importance of an environmental theme, ushering in a new era for major exhibitions.
More than just a fair, Expo '74 was a catalyst for transformation. Obsolete railway infrastructures were dismantled, the Spokane River was cleaned, and the former site was converted into what is now the magnificent Riverfront Park. This event not only attracted over 5 million visitors but also left Spokane a lasting legacy: a central urban park, heightened environmental awareness, and renewed civic pride, demonstrating that a small city could have a global impact on environmental dialogue.
A game, a guided tour and a heritage guide — all in one
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. »
How does it work?
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.
Want to go deeper?
Places tied to your adventure — optional entries, totally up to you · per person
The Route
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.
How does it work with a group?
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.
- ✓All codes are independent — play at the same time OR separately, each team advances at its own pace.
- ✓Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
- ✓More than 10 phones or need a personalized quest? Discover custom tours.
Ready to live this adventure?
Get my code · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Ecological Exploration
Discover the history of the first World's Fair dedicated to the environment.
Urban Renewal
Explore Riverfront Park, a testament to Spokane's transformation.
Futuristic Vision
Unravel the hidden messages of Expo '74's architects and visionaries.
Spokane Awaits You
Unravel its past secrets and forge your own legend.
9 features nobody else has
OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.
AR treasure chest
A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.
AR narrator character
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.
Magic golden letters
At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.
Written + audio narration
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.
360° radar + vibration
A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.
Heritage storytelling
Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.
Progressive AI hints
3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.
AR selfie memento
At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.
Zero app to install
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
Frequently asked questions
Q01Do I need to download an app?
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.
Q02Does it work offline?
GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.
Q03How long does a game take?
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.
Q04What happens if I'm stuck?
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).
Q05What's the age range?
From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.
Q06What if my city isn't in the catalogue?
Pre-register or contact us — we'll email you as soon as your city is live.
Q07What is augmented reality exactly?
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.
Avis des aventuriers
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Your turn to play
Embark on a unique adventure in the heart of Spokane and discover the legacy of a World's Fair that changed the world. Buy your game now!
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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