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Uncover the coded intrigues of the Imperial Diet that threatened to shatter the Holy Roman Empire. Decode secret messages, outwit rival factions, and expose the conspiracy in the historic power centers of Regensburg.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadowed halls of Regensburg's Old Town, the Perpetual Imperial Diet convened from 1663, where electors, princes, and bishops clashed over the fate of the Holy Roman Empire
You are an Imperial Archivist, dispatched to Regensburg in 1663 to document the fervent debates of the Perpetual Diet.
Your mission: decipher the intrigues, identify the secret alliances and
Dive into the political arcana of the Holy Roman Empire, where the destinies of Europe were shaped for centuries in Regensburg.
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
« It floats but does not sink. »— Traditional motto of the city of Regensburg, linked to the Danube and local resilience.
Your investigation begins in front of the Altes Rathaus, Regensburg's Old Town Hall, built between 1260 and 1280. This historic monument was the seat of the municipal government and, from 1663, the setting for the meetings of the Estates of the Holy Roman Empire. The Renaissance facade, added between 1568 and 1574 with its mullioned windows, conceals centuries of deliberations. It was here that imperial legates, prince-electors, and representatives of free cities gathered, laying the groundwork for decisions that shaped Central Europe. The tower, approximately 60 meters high, overlooks the Haidplatz, offering you a perspective on the scale of the Diet's stakes.
Continue your investigation to the Haidplatz, a central square since the Middle Ages. In 1576, the Haidplatz Fountain was erected there, a meeting and rallying point for imperial delegations. The patrician houses and merchant dwellings from the 15th-17th centuries surrounding it bear witness to the wealth accumulated by the city thanks to its role as a commercial crossroads on the Danube. It was here, in this lively square, that Charlemagne and later Henry the Lion strengthened Regensburg's power, making this city a pivot of the Holy Roman Empire. The adjacent historic covered market (Krämerei), dating from the 16th century, reflects the intense economic activity that accompanied the Diet sessions.
Your journey then takes you to the Thon-Dittmer-Palais, built around 1540-1560 for the Thon-Dittmer family of merchants and bankers. Its Renaissance facade, adorned with stucco, and its twin windows characterize Bavarian architecture of the period. This listed palace served as a residence for foreign delegates during the Imperial Diets, a place where informal negotiations and alliances were forged away from official pomp. Not far away, the Neue Residenz der Fürstbischöfe, built between 1720 and 1730 by Prince-Bishop Johann Anton Freiherr von Fraunberg, housed Regensburg's major religious authority, the prince-bishop, whose influence was crucial in the Diet's deliberations.
Cross the Danube via the Steinerne Brücke, the Stone Bridge, built between 1135 and 1146. 308 meters long with 15 arches, it is one of Germany's oldest stone bridges and a masterpiece of medieval engineering. Strategically crucial, it allowed imperial delegations to reach the old town and the Diets. The 12th-century lapidary inscriptions, carved on its pillars, whisper ancient secrets. Heading towards the Dom St. Peter, whose construction began in 1275, you admire its 105-meter Gothic towers, completed only in the 19th century, a symbol of the spiritual power of the Prince-Bishop of Regensburg.
Your quest concludes at the Reichstagsmuseum, located in the Altes Rathaus, which documents 143 years of imperial meetings (1663-1806). There you will grasp the scope of the decisions made in the Reichssaal. Alleys like the Weissgerbergasse, with its half-timbered houses and Renaissance facades from the 12th-16th centuries, preserve the authentic medieval urban layout of Regensburg, a UNESCO World Heritage city. This immersion into the intrigues of the Imperial Diet offers a unique understanding of the political complexity of the Holy Roman Empire, and Regensburg's central role in Bavaria, revealing how this city managed to "Fluctuat nec mergitur" in the face of the ebbs and flows of history.
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.
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?
Get my code · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Dive into the political fervor of the Holy Roman Empire at its peak.
Unmask a conspiracy threatening the balance of power within the Diet.
Walk the streets where princes and ambassadors wove the webs of power.
Power whispers its secrets to the city walls.
A political investigation awaits you in the alleys of Regensburg.
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 political arcana of the Holy Roman Empire, where the destinies of Europe were shaped for centuries in Regensburg.
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.
Entrée libre. Admirez les vitraux gothiques des XVe-XVIe siècles et la rose du chœur, symboles de l'art sacré bavarois.
Environ 8€. Explorez les collections qui retracent l'histoire de la ville depuis l'Antiquité romaine jusqu'à l'époque moderne.
À partir de 5€. Savourez cette spécialité locale dans l'un des stands près du Pont de Pierre, une tradition gastronomique depuis des siècles.
Environ 15€. Profitez d'une perspective unique sur la vieille ville de Regensburg et le Pont de Pierre depuis le fleuve, comme les marchands d'antan.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.