Luxembourg City — The Broken Oath
1942: A secret oath shatters under Nazi occupation. Uncover the traitor's identity, decipher hidden codes at WWII sites, and thwart the conscription plot before it's too late.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed heart of Luxembourg City during the Nazi occupation of World War II, a sacred oath among resistance fighters was brutally broken
Luxembourg City — The Broken Oath
You are Roger Manderscheid, a young resistance fighter from the LVL network, operating in Nazi-occupied Luxembourg City in 1940.
Your mission: to thwart a propaganda plan
Immerse yourself in 1940 Luxembourg, an occupied city where resistance organizes in the shadow of centuries-old monuments.
« We want to remain what we are »— Official motto of the Grand Duchy of Luxembourg
The story that haunts this land
Your journey begins in front of Luxembourg City Hall, a neoclassical building constructed in 1830. The seat of municipal power since 1876 and classified as a national monument in 1982, its facade adorned with Ionic columns and a sculpted pediment representing Justice (1844) is a silent witness to the decisions that shaped this European capital. It was here, on Place Guillaume II, that the first tensions of the occupation were felt, with Prime Minister Pierre Dupong forced into exile as Luxembourg City's autonomy was undermined.
Continue to the Music Kiosk, erected in 1934 in the City Park of Luxembourg. This octagonal wrought-iron structure, 12 meters in diameter, designed by architect Sosthène Weis, was a gathering place for open-air concerts until the 1950s. Restored in 2004, it could accommodate an orchestra of 30 musicians. The City Park, created in 1867 on the former bastions of the fortress and landscaped by Édouard André, is a 7-hectare haven of peace, classified as a protected site in 1983. It was in these alleys that resistance fighters like Gabrielle Lentz discreetly exchanged information, away from enemy eyes.
Your quest then leads you to the Gëlle Fra, the monument erected in 1923 to honor Luxembourgish soldiers who died in 1914-1918. Melted down by the Nazis in 1940 as a symbol of their domination, the 5-meter-high bronze statue on a 28-meter pedestal was rebuilt and inaugurated by Grand Duke Jean on May 25, 1985. This historic site, dear to Luxembourg's heritage, embodies the resilience of the people and the memory of those who fought for freedom. The motto « Mir wëlle bleiwe wat mir sinn » resonates here with particular force.
Nearby, the Notre-Dame Cathedral of Luxembourg, originally a Jesuit church built between 1613 and 1621 and transformed into a cathedral in 1870, offers an architectural contrast. Its late Gothic style and baroque crypt house the tomb of Grand Duke Jean (1921-2019), enthroned here in 1964. This place of worship, 58 meters long with vaults 28 meters high, is a pillar of Luxembourg's history. The Cercle Cité, a Neo-Renaissance building from 1910 by Sosthène Weis, former residence of Prussian officers (1867-1890) and cultural center since 1959, is another landmark on your journey through the European capital.
The Marché-aux-Poissons, built in 1827-1829 by Jacques-Nicolas Thouvenin in a neoclassical hexagonal style, served as a market until 1967 and was classified as a historical monument in 1976. Its barrel-vaulted interior, restored in 1980, bears witness to daily life in Luxembourg. Finally, the Adolphe Bridge, inaugurated in 1903 with its unique masonry arch spanning 85 meters (a world record until 2002), designed by H. Behm and P. Seché, concludes your exploration. This bridge, closed to pedestrians during World War II, symbolizes the city's constraints and liberations. Your immersion in the UNESCO casemates heritage and the monuments of Luxembourg will have made you relive the dark but heroic hours of the resistance.
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.
The game downloads to your phone on start. Once the "✓ Downloaded" indicator appears, everything works without data — narration, AR, GPS and puzzles. Perfect abroad without a data plan.
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?
Historical Investigation
Discover the methods and networks of the Luxembourgish resistance against Nazi occupation.
Resistance Codes
Decipher the secret messages that resistance agents used to communicate under the enemy's nose.
Underground Network
Reconstruct the organizational chart of a resistance cell that dared to defy the Nazi order and save lives.
The courage of the 'Ons Jongen' still resonates.
Never forget.
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
Q01Luxembourg City — The Broken Oath — is it a guided trail or a free-form hunt?
It's a semi-guided trail: GPS points you to the next stop, but you find the camera clue and solve the puzzle yourself. No app to install, everything runs in your browser.
Q02How far do you walk in Luxembourg City Center?
Usually 2 to 4 km of total walking, within 1.5 km as the crow flies from the start point. The route is designed to be walkable at a relaxed pace, no public transport needed.
Q03Can we do Luxembourg City — The Broken Oath as a family with kids?
Yes, from age 6 with an adult reading puzzles aloud, and from age 12 on their own. Kids love the "find the camera clue" part — it's very visual, gets them genuinely involved.
Q04Do we need 4G data to play?
Intermittent 4G is plenty. Maps are cached at startup. Narration and clues load per stop, so a so-so signal between stops is fine. GPS itself uses no data.
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Your turn to play
Immerse yourself in 1940 Luxembourg, an occupied city where resistance organizes in the shadow of centuries-old monuments.
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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