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Uncover the secret codes embedded in Gabriele D'Annunzio's lost Carnaro constitution. Decipher cryptic messages hidden across Rijeka's monuments to expose the truth behind the 1920 occupation.
📱 1 to 10 phones · 1 team per phone · Independent codes
September 1920: Italian poet and nationalist Gabriele D'Annunzio seized Rijeka (then Fiume) and proclaimed the Italian Regency of Carnaro—a daring political experiment that shocked Europe
You are a secret archivist for a foreign consul, operating in Fiume during the D'Annunzian occupation of 1919-1920.
Your mission is to decipher D
Dive into 1919 Rijeka, when the poet-soldier Gabriele D'Annunzio defied Europe by proclaiming the Italian Regency of Carnaro.
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
« Under unity it will never perish »— Inscription on the City Tower, Rijeka (1758)
Your quest begins at the Governor's Palace, an 1880 Neo-Renaissance building that served as Rijeka's historic administrative seat. This 3,000 m² edifice, adorned with allegorical statues, was the center of power for the Regency of Carnaro from September 1919 to December 1920 under D'Annunzio. It was here that the authorities of the Free State of Fiume held their meetings, and it is on its facade that the first clues of your GPS treasure hunt are revealed, plunging you directly into the Croatian cultural heritage of this period. Today, it houses the city's history museum, preserving traces of this turbulent era.
Continue your Rijeka tour on the Korzo, the 500-meter-long central promenade, pedestrianized since 1980 and lined with Baroque and Neo-Renaissance buildings. Since the 17th century, this place has been the beating heart of the historic district of the Kvarner region. In 1919, it became the epicenter of public gatherings and parades of D'Annunzian legionaries, who listened to the fiery speeches of their Comandante there. It is on the walls and pavements of this artery that messages hidden by D'Annunzio's followers might still reside, visible only through your app's augmented reality, revealing fragments of the manifesto.
Your journey then takes you to the Modello Palace, built in 1885-1887 by Modello insurance, a historicist building 60 meters wide. This edifice, restored in 2005, served as a venue for social gatherings and parties during the occupation of Fiume in 1919-1920, with a capacity of 500 people for events. The interior, decorated with frescoes and gilded stucco, testifies to the splendor of the era, even under occupation. Your investigations prompt you to look for marks left by conspirators, perhaps in the ornaments of its facade, or coded messages hidden in the architectural details typical of this period in Rijeka's history.
Not far, the City Tower (Gradski Toranj), built in the 13th century as a fortification and transformed into an 18-meter clock tower in the 19th century, is a historic entry point to the old city of Rijeka. Until 1750, it was the main gate. On its facade, the Latin inscription 'Sub unitate numquam peribit' engraved since 1758, takes on a special meaning in the context of D'Annunzio's occupation of Fiume in 1919-1920. It is here that urban legends and accounts from the era place secret caches, and your augmented reality tools might well reveal symbols forgotten by time, witnesses to the Regency of Carnaro. Then stroll through Stari Grad, the historic district with its medieval cobbled streets and 1st-century Roman remains. This 0.5 km² area, protected since 1990, was a perfect labyrinth for legionary hideouts and graffiti in 1920.
Your final stop leads you to the Port of Rijeka, Croatia's primary port, developed since 1719 under the Habsburgs, with a basin area of 20 hectares. It was the essential logistical base for D'Annunzio's legionaries during the occupation of Fiume in 1919. The central quays, 1.5 km from the Korzo, connected by historic boulevards, still echo with the arrivals and departures of ships transporting troops and supplies. By completing this thematic circuit of Rijeka, you will have not only decoded the manifesto, but also grasped the magnitude of Fiume's history from 1919-1920. This Rijeka family treasure hunt will have offered you an interactive city tour, revealing the secrets of its heritage and monuments in the Kvarner region.
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.
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Explore the utopian and nationalist ideals of D'Annunzio's constitution.
Discover how D'Annunzio transformed the city into a stage for his political performance.
Understand the strategic importance of Fiume, at the heart of post-war tensions.
Poetry in power, chaos at its gates.
Recover the lost visions of Fiume.
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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Dive into 1919 Rijeka, when the poet-soldier Gabriele D'Annunzio defied Europe by proclaiming the Italian Regency of Carnaro.
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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More ideas for self-guided walking tours, scavenger hunts & city quests in the same city

Decode the secret network of D'Annunzio's renegade legionnaires who plotted to destabilize the Free State of Fiume. Uncover their hidden messages, betrayals, and the conspiracy that threatened to ignite a second civil war in 1920s Adriatic.

Uncover the fragments of a secret manifesto hidden by a desperate Fiuman to preserve the city's polyglot soul amid its turbulent past. Reassemble it before it's lost forever.
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Prix variables. Assistez à une représentation d'opéra, de théâtre ou de ballet dans un édifice néo-baroque de 1885, témoin de la vie culturelle de Rijeka.
Accès libre. Perchée sur une colline dominant Rijeka, cette forteresse médiévale offre des vues panoramiques sur la ville et la baie de Kvarner, et abrite un sanctuaire marial.
5-7€. Situé dans le Palais du Gouverneur, ce musée offre une collection riche sur l'histoire navale et culturelle de la région de Kvarner, des temps préhistoriques à nos jours.
30-50€. Savourez les fameuses langoustines de Kvarner, réputées pour leur saveur unique, dans l'un des restaurants traditionnels du port de Rijeka.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.