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In the ashes of war, a visionary architect hid a secret blueprint to resurrect Vukovar's soul. Uncover his coded symbols across baroque ruins and memorials to decode the defiant plan before it's lost forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
Amid the rubble of the 1991 siege that reduced Vukovar to ruins, one architect dared to dream of rebirth
You are Bogdan Bogdanović, the visionary Yugoslav architect, entrusted with a secret plan to preserve Vukovar's architectural memory through the ages.
Your mission leads you in the footsteps of the Eltz barons
Dive into the heart of Vukovar, a martyr city and phoenix of Slavonia, where every stone tells a story of resilience and baroque.
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 to decipher architect Bogdanović's plan begins at Eltz Castle, a baroque edifice built between 1750 and 1752 by the Austrian Eltz barons. This historic residence, transformed into a city museum in 1965, houses exhibitions on local history and the scars of the 1991 war. Heavily damaged during the Siege of Vukovar, it has been restored to bear witness to the city's resilience. The castle, located in the city center, is a visible starting point for understanding Vukovar's rich past and its Slavonia baroque heritage.
Less than 500 meters from the castle, Trg Republike Hrvatske awaits you, Vukovar's historical heart since the 18th century. This central square, surrounded by restored baroque buildings, has been the scene of public gatherings and still bears the traces of the 1991 war, with discreet commemorative monuments. It is here that Bogdanović's plan takes shape, highlighting the importance of public space in collective memory. Just 300 meters away, Crkva sv. Filipa i Jakova, a baroque Catholic church from 1793 with its 50-meter bell tower, reveals 18th-century frescoes, restored after the 1991 damages.
Your journey then leads you towards the Vukovarski vodotoranj, the water tower, an emblem of the city, visible 1 km from the center. Built in 1902 and approximately 60 meters high, it was intentionally left riddled with bullets and shells from the Battle of Vukovar from August to November 1991, symbolizing the 87 days of siege. This 1991 Croatian war memorial is a poignant testimony to Vukovar's survival. Bogdanović would have seen in this structure a symbol of tenacity, a pillar of urban memory.
Walking along the Šetalište uz Dunav, the promenade developed in the 19th century, you discover another aspect of the architect's plan. Stretching for about 2 km from the city center, this promenade leads to the 1991 white commemorative cross, erected at the confluence of the Danube and Vuka in homage to the victims of the siege. 800 meters from Eltz Castle, this natural border of the urban pedestrian route embodies the deep connection between the city, its river, and its history. The Muzej vučedolske kulture, located 1 km from the castle in the historic district, offers a striking contrast.
The archaeological museum, opened in 2013 in a neo-Renaissance villa from 1905, exhibits Neolithic artifacts, including the famous Vučedol Venus, a statuette from 2800-2700 BC, discovered in 1923 near Vukovar. This site, though chronologically distant, fits into Bogdanović's vision by recalling Vukovar's historical depth, far beyond its most recent episodes. Your exploration of the Vukovar city museum and Park šuma Adica, a forest park, allows you to understand how memory, whether baroque or prehistoric, is woven into the very fabric of this Croatian city, offering a complete perspective on its past and future.
5-10 curated sites across the territory
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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Witness the resurrection of a city, between scars of the past and promises of the future.
Decipher architectural clues to reveal the vision of an unknown urban planner.
Explore iconic places, rebuilt or preserved, that tell the story of an undefeated city.
Build the future, honor the past.
Unveil the vision of Vukovar's rebirth.
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 the heart of Vukovar, a martyr city and phoenix of Slavonia, where every stone tells a story of resilience and baroque.
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.
7€. Explorez l'histoire locale et les collections d'art, installées dans le Château d'Eltz.
20€. Découvrez les cépages locaux comme le Graševina dans une cave traditionnelle de la région de Slavonie.
5€. Admirez la Vénus de Vučedol et les découvertes archéologiques néolithiques.
15€. Admirez Vukovar sous un autre angle et les paysages de la Slavonie depuis le fleuve.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.