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Decipher the secrets of a 6th-century Celtic prince buried in the Alpine salt lands. Uncover his identity, his wealth, and the conspiracy that erased him from history.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadow of the Salzach River, Hallein guards an ancient mystery
You are a dedicated archaeological researcher in Hallein, Austria, in 1970, inspired by Gerhard Trnka's pioneering work and his founding of the Keltenmuseum Halle
Uncover the millennia-old secrets of the Hallstatt culture, where Celtic princes ruled over the white gold of the Alps, in Hallein, Salzburg.
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
Your quest begins in front of the Keltenmuseum Hallein, a mid-18th century building that once housed the salt office. It was here that Gerhard Trnka opened one of Europe's largest Celtic museums, featuring artifacts from the La Tène period. Inside, discover a 2500-year-old Celtic spouted jug from Dürrnberg and objects from an intact Celtic prince's tomb, along with 80 paintings by Benedict Werkstötter illustrating salt production, commissioned in 1757 by Prince-Archbishop Sigismund von Schrattenbach. This museum is the gateway to the Hallstatt culture, essential for understanding Hallein's history.
Continue your visit to Hallein towards Oberer Markt, the historic square that gave the city its name, linked to salt production ('hal' mentioned as early as 1198). This central point of the old quarter is crossed by your walking tour, offering an immersion into the city's commercial past. Nearby, the Stadtpfarrkirche Hallein, the central parish church, testifies to the influence of the Prince-Archbishops of Salzburg who controlled salt exploitation, a pillar of the local economy and Salzburg's heritage.
Your path then leads you to Pernerinsel, an island on the Salzach, 500m from the Keltenmuseum. Once an industrial area dedicated to salt production, it is now a historical and cultural site integrated into Hallein's heritage. The island represents the city's transformation, from its industrial salt past to its current role as a cultural center. Here you can measure the evolution of the urban landscape, marked by salt mining which shaped the Salzburg region for centuries.
Approaching the Pfleggericht, the former 18th-century district court, you traverse a part of the administration of the Prince-Archbishops who ruled over salt exploitation from that century. This historic building, located near Pflegerplatz 5, is a remnant of the authority that managed Hallein's resources. Then, the Salzachbrücke, the bridge over the Salzach, connects you to the historic center, an access route to Dürrnberg and its prehistoric salt mines exploited since the Iron Age, illustrating salt's vital role in the region's history.
Your quest concludes at Dürrnberg, the mountain above Hallein, home to prehistoric salt mines exploited since the Iron Age and the site of the Keltenmuseum's excavations. It was here that Kurt W. Zeller oversaw the reconstruction of the Celtic village Salina in 1980, later moved in 1996. Dürrnberg houses unique European remains of Celtic settlements and burial sites, from the Prince-Archbishops to the Ice Age, confirming its status as a treasure of Celtic history Europe and the Hallstatt culture. Your exploration of Hallein will have revealed the importance of this 'Celtic prince' and the lasting impact of Salt mining heritage on this Salzburg region.
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.
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Discover the opulence of the Hallstatt princes through their precious objects.
Delve into the millennia-old history of salt mining, source of Celtic wealth.
Explore the breathtaking panoramas of Dürrnberg and the Salzach valley.
The past whispers to those who know how to listen.
Your archaeologist's spirit will be your guide.
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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Uncover the millennia-old secrets of the Hallstatt culture, where Celtic princes ruled over the white gold of the Alps, in Hallein, Salzburg.
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.
Adultes 28,50 €. Explorez les mines de sel millénaires du Dürrnberg, exploitées depuis l'Âge du Fer par les Celtes et les prince-archevêques de Salzbourg.
Accès libre face aux Salzwelten. Explorez la reconstruction d'un village celte pour une immersion directe dans la Hallstatt culture et la vie quotidienne de l'Âge du Fer à Dürrnberg.
Inclus dans le billet du musée (9,50 €). Découvrez les trois salles dédiées aux prince-archevêques, témoins de l'administration saline à Hallein.
Prix variables. Goûtez aux produits locaux influencés par le sel de Hallein, des charcuteries aux fromages affinés, reflétant le patrimoine culinaire de Salzbourg.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.