Dag-Bary — Uncover the Persian King's Hidden Conspiracy
Decipher the secrets locked within Khosrow I's legendary fortress. A 6th-century Persian conspiracy, a hidden gate, and a mystery that shaped empires awaits your investigation.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 531 CE, the Persian King of Kings, Khosrow I, commanded the construction of Dag-Bary—the colossal fortress complex that would seal the Caspian Gates against the nomadic hordes of the north
Dag-Bary — Uncover the Persian King's Hidden Conspiracy
You are a historical detective, specializing in ancient Persian intrigue, arriving in Derbent, Russia, in the present day.
Your mission begins in 531 CE, when the Persian King of Kings
Derbent: The Millennial Lock of the Caucasus
« Derbent is the strongest of the fortresses on Earth, and its wall... a wonder built of black stone and iron. »— Al-Mas'udi, Arab historian and geographer (10th century)
A history of walls and crossroads
Founded over 5,000 years ago according to archaeological discoveries, Derbent is considered the oldest city in Russia. Its unique geographical position, wedged between the Caucasus Mountains and the Caspian Sea, made it an indispensable strategic passage between East and West. As early as the 5th century, the Sasanian Persians began to erect a formidable line of defense there, known as 'Dag-Bary' or the Caucasian Wall, of which the Naryn-Kala citadel is the heart. These fortifications were not mere walls, but a complex system designed to control the passage of peoples and armies, marking a turning point in ancient military engineering.
Over the centuries, Derbent became a crossroads of civilizations. Controlled in turn by the Persians, Arabs, Khazars, Mongols, and finally the Russians, each power left its mark on the city and its defenses. The Juma Mosque, historical baths, and churches bear witness to this multicultural richness. The Naryn-Kala fortress, a UNESCO World Heritage site, remains an exceptional example of defensive architecture, a symbol of the resilience of a city that managed to preserve its identity while absorbing influences from all who passed through its gates. The legacy of its builders lies in a deep understanding of terrain and strategy.
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
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?
Impenetrable Ramparts
Discover the construction techniques that made Derbent's walls invincible for centuries.
Key to the Caucasus
Understand how Derbent controlled the strategic passage between Europe and Asia.
Forgotten Manuscript
Reconstruct fragments of an ancient strategic plan, the 'Dag-Bary', to uncover the city's secret.
Derbent: where East and West met and clashed for millennia.
A fortress of stone, a crossroads of history.
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
Unravel the millennial secrets of the Gate of the Caucasus and decipher the plan that made Derbent an impregnable citadel.
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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