Petropavlovsk — Secret of the Protective Volcano
Uncover the hidden code of the Protective Volcano that saved Petropavlovsk during the 1854 siege. Decode clues at key landmarks to reveal the forgotten defense secret before it erupts again.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1854, during the Crimean War's forgotten Siege of Petropavlovsk-Kamchatsky, Anglo-French invaders bombarded the remote outpost at the edge of the world
Petropavlovsk — Secret of the Protective Volcano
You are a present-day historical cryptographer, summoned by descendants of Petropavlovsk's garrison to decipher a forgotten secret.
In 1854, during the Crimean War's
1854: When the end of the world repelled two empires
« « Kamchatka is a land of trials, but also of wonders, where nature itself can be our greatest ally. » »— Vassily Zavoyko, Governor of Kamchatka (attributed)
The Resistance at the End of the World
In the midst of the Crimean War (1853-1856), the Anglo-French allied fleet sought to paralyze Russian ports. Petropavlovsk, though tiny and isolated, represented a strategic point in the Pacific. Allied naval forces, commanded by Admirals David Price and Charles Rigault de Genouilly, arrived in Avacha Bay in August 1854. Consisting of six ships and over 200 cannons, they dwarfed the Russian defenses: only three ships and limited coastal artillery, but under the resolute command of Governor-General Vassily Zavoyko.
Despite two major land assaults, the Russian defenders, aided by the rugged terrain, the inhospitable climate, and an intimate knowledge of their environment, managed to repel the attackers. The death of Rear Admiral Price, who committed suicide before the main assault, and the heavy losses suffered by the allies, who were forced to withdraw in September 1854, made this unexpected victory a symbol of Russian resilience. It demonstrated that beyond brute military power, the spirit of defense and natural conditions could change the course of a battle.
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
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.
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 · 14,90€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Relentless Nature
Kamchatka's volcanic environment and extreme climate played a crucial role in the outcome of the siege.
Defense Strategy
Discover how Russian defenders used terrain and clever tactics to repel a superior enemy.
Historical Mystery
Uncover the secret of an unexpected victory, an often-forgotten feat of the Crimean War.
Nature, the Ultimate Ally.
Decipher Zavoyko's secret report.
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
Soyez le premier à partager votre expérience.
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Your turn to play
Discover how the forces of nature and the courage of men saved Petropavlovsk. Your quest will take you from historical quays to volcanic summits, revealing the secrets of this legendary defense.
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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