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Uncover the legate's cryptic final message from Histria's founders. Decode ancient clues hidden amid the ruins to reveal a buried treasure and thwart a shadowy curse before it claims the site's secrets forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 657 BC, Milesian Greeks from Miletus founded Histria, Romania's oldest city, on the Black Sea shore near the Danube's mouth
You are a junior archaeologist, arriving in Histria in 1914, tasked with assisting Vasile Pârvan in unveiling the buried secrets of this ancient city.
Your mission leads
Delve into the millennia-old layers of Histria, Romania's oldest archaeological site, where the echoes of Greek colonists still resonate on the shores of Dobrogea.
Your exploration of ancient Greek heritage in Dobrogea begins at the Situl arheologic Histria, a vast 40-hectare complex where colonists from Miletus established a trading post around 630 BC. This Romanian national archaeological site was the heart of continuous occupation from the 7th century BC to the 7th century AD. As Vasile Pârvan, you observe the successive layers of history, from the foundations of the earliest dwellings to the signs of gradual decline after the 4th century, marked by the silting of the port and barbarian invasions. Histria, with its 2021 UNESCO candidacy, represents a window into Antiquity, an essential interactive visit to understand the evolution of civilizations on the western coast of the Black Sea.
Near the Zidul de apărare, you examine the Hellenistic fortifications built in the 4th century BC, later reinforced by the Romans. This defensive wall, reaching 3-4 meters in height and 2 meters thick, protected the city of Histria from external threats. The main gate, flanked by semi-circular towers, dated to the 1st century AD, testifies to the military engineering of the era. You also note the Byzantine restorations carried out in the 6th century under Emperor Justinian I, who sought to consolidate Dobrogea's defenses. Every stone of this rampart tells a story of resilience and conflict, a crucial fragment for your investigation into Histria's heritage.
Histria's Agora, a central Hellenistic public square measuring 50 x 40 meters, was the commercial and political heart of the city. Surrounded by porticoes in the 2nd century BC, it was a meeting place for citizens and merchants. Adjacent to it, the Roman basilica, built in the 1st century AD, highlights Histria's integration into the Roman Empire. It was here that Vasile Pârvan began his excavations in 1914, revealing the richness of this port city. As you explore this space, you perceive the incessant activity that animated Histria, a major hub of ancient trade on the Romanian coast, whose secrets are revealed by the GPS treasure hunt.
Your journey then takes you to the Termele romane, the public baths built in the 2nd century AD. These baths, covering an area of 1000 m², equipped with a hypocaust heating system typical of imperial Roman baths, illustrate the level of comfort and sophistication achieved by Histria under Roman administration. They were, however, abandoned in the 4th century during the economic crises that shook the Empire. This stage of your interactive visit highlights the daily life of Histria's inhabitants and the economic challenges that led to the city's decline, an essential aspect of Dobrogea's history.
Finally, the Basilica creștină, an early Christian episcopal basilica built around 400 AD, marks a new era for Histria. Measuring 36 x 17 meters, with its narthex and apse, it housed polychrome mosaics adorned with crosses and Greek inscriptions dated to the 5th century. It served as the seat of a suffragan bishopric of Tomis until the 7th century, before the city was gradually deserted, notably due to the silting of Lacul Sinoe, the ancient maritime bay. This site, which concludes your exploration, symbolizes the persistence of Christian faith amidst urban decline. You leave Histria with a deep understanding of this ancient Greek heritage of Dobrogea, having reconstructed the founders' "Lost Legacy".
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
8 sites to explore by car within the day
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.
Ready to live this adventure?
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Reconstruct fragments of a lost manuscript, written by Milesian priests, predicting Histria's fate.
From Hellenistic ramparts to Roman baths, traverse the different eras of this millennia-old city.
Understand how the Black Sea, once a source of wealth, ultimately contributed to the city's oblivion.
CAN YOU DECODE HISTRIA'S LEGACY?
Uncover the words of the ancients to reveal the secret of the submerged city.
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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Delve into the millennia-old layers of Histria, Romania's oldest archaeological site, where the echoes of Greek colonists still resonate on the shores of Dobrogea.
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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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
30 RON. Explorez les artefacts découverts sur le site, des céramiques aux sculptures, pour une immersion complète dans le quotidien antique.
20 RON. Découvrez une forteresse romaine et byzantine impressionnante, située à environ 50 km de Histria, sur le Danube.
Accès libre. Observez la biodiversité unique du delta du Danube et du Lacul Sinoe, une zone protégée Natura 2000.
Prix variables. Savourez les spécialités locales de poisson pêché directement dans le lac, dans l'un des restaurants traditionnels.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.