The Sovereign's Secret — Liechtenstein's Hidden Neutrality Pact
Decipher the encrypted diplomatic cables hidden across Vaduz to expose the true cost of Liechtenstein's neutrality during WWII and uncover a secret pact that shaped the principality's fate.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1945, as Europe burned, Liechtenstein's Prince Franz Joseph II made a vow of silence
The Sovereign's Secret — Liechtenstein's Hidden Neutrality Pact
You are a princely archivist on a secret mission in Vaduz, 1943.
Your task: decipher clues left by Prince Franz Joseph II to preserve the Principality's independence,
Delve into the heart of Vaduz, following the diplomatic secrets that sealed Liechtenstein's neutrality during World War II.
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
« For God, Prince and Fatherland »— National Anthem of Liechtenstein, since 1866
The story that haunts this land
Your quest for WWII neutrality begins on Peter-Kaiser-Platz, Vaduz's central square named after Peter Kaiser (1793-1852), mayor of Vaduz from 1830 to 1852. This historic gathering point, with an approximate area of 0.5 ha, is surrounded by 19th-century administrative buildings. It was here, in the immediate vicinity of the Landtagsgebäude, that crucial decisions for Liechtenstein's historical heritage were made. Prince Franz Joseph II, sovereign during this tense period, is believed to have deliberated here to preserve his country. The motto "Für Gott, Fürst und Vaterland" still echoes the political events that took place there.
A few steps away, the Landtagsgebäude, Liechtenstein's Parliament building, constructed between 2004 and 2008 and inaugurated on April 1, 2008, has been the seat of the Landtag since 1868. Its contemporary glass and concrete architecture, 25 m high, symbolizes parliamentary democracy post-2003. It represents a key point of your visit to Vaduz, as it was within these walls, even if rebuilt, that the country's sovereignty was affirmed. Today, the 25 deputies perpetuate the legacy of a nation that successfully navigated historical storms, particularly by maintaining its neutrality during the world conflict.
Your journey then takes you to the Rathaus Vaduz, the City Hall, located 200 m from Peter-Kaiser-Platz. Built in 1953-1955 in a modern style and expanded in 1996, it has housed municipal offices since 1955. Its local stone facade, adorned with a public clock dating from 1955, testifies to the reconstruction and consolidation of the administration after the challenges of the war. This is an important site for understanding how Vaduz managed its daily life and future, far from major European capitals, while fulfilling its role as a city center for its citizens.
Continue to the Liechtensteinisches Landesmuseum, 400 m from Peter-Kaiser-Platz. Its buildings, constructed in 1435 as a salt warehouse, were transformed into a museum in 1954. Over 3000 m², it exhibits the country's history, including its WWII neutrality and a collection of 2000 prehistoric to modern artifacts. The Postmuseum Vaduz, opened in 1984 in the former post office building from 1929 (300 m from Peter-Kaiser-Platz), completes this immersion with its collection of 500,000 Liechtenstein stamps since 1912 and exhibitions on historical communications, including during World War II. These places illustrate the country's efforts to document and preserve its identity.
Concluding your Vaduz thematic circuit, you have traced the steps of a nation that defended its Liechtenstein historical heritage and WWII neutrality. From Peter-Kaiser-Platz to the Postmuseum, via the Landtagsgebäude and the Rathaus, this interactive visit has allowed you to understand the complex decisions made by figures such as Prince Franz Joseph II and Peter Kaiser. The history of Vaduz, marked by discreet resilience, reveals how a small state managed to preserve its autonomy in the face of global upheavals. You leave with a deep understanding of Vaduz's history and the challenges that shaped this unique country.
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?
The Princely Heritage
Dive into the history of the Princes of Liechtenstein and their decisive role in building a prosperous and peaceful state.
The Secret Archives
Reconstruct a forgotten document, the 'Vaduz Protocol,' which guided the nation through the turmoil of history without ever going to war.
Peaceful Diplomacy
Discover the unique strategies and diplomatic wisdom that have allowed Liechtenstein to maintain its neutrality and prosperity since 1868.
The strength of a nation is measured not by its weapons, but by its wisdom.
Unravel the threads of a history of peace.
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
Delve into the heart of Vaduz, following the diplomatic secrets that sealed Liechtenstein's neutrality during World War II.
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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