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Uncover the lost seal of the Salian emperors hidden in Speyer's medieval landmarks. Decipher clues from the Imperial Cathedral to their crypts and expose a 11th-century conspiracy that sealed their dynasty's fate.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1030, Emperor Conrad II, founder of the Salian dynasty, laid the cornerstone of Speyer's Imperial Cathedral, the largest Romanesque church in the world
You are an imperial chronicler in the service of the Salian dynasty, tasked with a covert investigation in Speyer, circa 1030.
Your mission begins at Domplatz, before Conrad
Follow the footsteps of Conrad II through Speyer, the founding emperor of the Salian dynasty who erected Europe's largest Romanesque cathedral in 1030.
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
« Imperium Salicum aeternum »— Motto of the House of Salian, Official motto of the Salian dynasty (11th century)
Speyer emerges from 1030 as the symbol of Conrad II's power, first emperor of the Salian dynasty. The cathedral he orders measures 134 meters long and 33 meters high under vault — dimensions making it the largest Romanesque basilica in Europe at that time. Its imperial crypt houses the remains of eight emperors and kings of the Holy Roman Empire, including Conrad II himself, who died in 1039. The 2.5-meter thick walls testify to its defensive function during the religious wars that would ravage the region.
Conrad II's statue, erected in 1860 by Johann von Halbig on Domplatz, honors the founder of this imperial lineage that ruled Central Europe for a century. The Gothic inscription carved on the base proclaims 'Dem Gründer des Domes und Stifter der Salischen Herrschaft' — to the cathedral's founder and initiator of Salian domination. This 150 by 100-meter square, developed in the 19th century, maintains its weekly market since the Middle Ages, perpetuating the imperial commercial tradition.
Maximilianstraße guides you 600 meters along the artery traced in the 13th century, bordered by merchant houses from the 16th-18th centuries. This street preserves its medieval alignment and leads to the Town Hall built in 1558-1761 in Rhenish Renaissance style. The Altpörtel, sole surviving gate of the fortifications, rises 55 meters since 1370-1390. This three-story tower, with its loopholes and 6-meter passage, served as prison before its museum restoration after the 1689 destructions.
The episcopal residence, built between 1697 and 1710 by Lothar Franz von Schönborn, illustrates Speyer's baroque renaissance after the War of Spanish Succession. This 4500 m² palace with 50 main rooms, partially destroyed in 1945 then restored until 1968, now houses the Historical Museum of the Palatinate. Its French gardens, reconstructed according to 18th-century plans, extend the princely aesthetic in the former imperial city.
The Domnapf, monumental fountain reconstructed in 1904, closes your journey at Domplatz's center. Its 12-meter basin in red Vosges sandstone, adorned with sculptures of the Palatinate's four rivers, draws water from an underground spring discovered in 1895. You leave Speyer with intimate understanding of an imperial power that shaped medieval Europe, engraved in every stone of this Rhenish city listed as UNESCO World Heritage since 1981.
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.
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Follow in the footsteps of the powerful Salian emperors, builders of the Empire.
Explore the largest Romanesque cathedral in the world, a World Heritage site.
Untangle architectural puzzles for a forgotten message from the emperors.
The stone speaks... will you listen?
The Salian legacy awaits revelation.
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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Follow the footsteps of Conrad II through Speyer, the founding emperor of the Salian dynasty who erected Europe's largest Romanesque cathedral in 1030.
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
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
6€. Sépultures de Conrad II et sept autres empereurs du Saint-Empire dans la plus vaste crypte romane d'Allemagne.
25€. Riesling et Pinot Noir dans les caves historiques de la Maximilianstraße, terroir des empereurs saliens.
10€. Trésor de la cathédrale et couronne impériale salienne dans l'ancienne résidence épiscopale baroque.
4€. Panorama sur Spire depuis la tour médiévale de 55 mètres, dernière porte fortifiée de l'enceinte salienne.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.