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Uncover the hidden conspiracy that nearly derailed the 1918 Great Union in Alba Iulia. Decipher coded messages left by delegates to expose traitors and secure the lost unification pact before it's too late.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the shadow of Alba Carolina Citadel, December 1, 1918 marked the triumphant Great Union: 1228 delegates from Transylvania gathered in the Union Hall to proclaim unification with Romania, birthing a
You are King Ferdinand I's secret emissary, arriving in Alba Iulia, Romania's spiritual capital, in November 1918.
You carry a coded message that will seal Trans
Walk on the cobblestones where modern Romania's unification was proclaimed on December 1st, 1918, in the country's largest bastioned citadel.
Your mission begins at Poarta a III-a, the third gate of the bastioned citadel built between 1715 and 1738 under Charles VI. This monumental gate, topped by the emperor's equestrian statue, guards the entrance to the star-shaped fortress designed by Giovanni Morando Visconti. Above stands Horea's symbolic cell, leader of the 1784-1785 peasant revolt against Habsburg nobility. The 6 gates aligned on east-west axes testify to Vauban's military genius adapted to the Carpathians. Here, you decipher the first clue: an inscription carved on the imperial coat of arms reveals the route to Sala Unirii.
Sala Unirii plunges you into December 1st, 1918, when 1,228 delegates proclaimed Transylvania's union with Romania. This former military casino for Austro-Hungarian officers became the theater of modern Romania's birth. On the west walls, marble plaques preserve the complete text of the Union Resolution and the Law for Regional Union. Your phone reveals the delegates' faces, their voices echoing in the empty hall. Here, Ferdinand I would seal his royal destiny: crowned in 1922 in this same citadel, the first and last coronation on Romanian soil.
The Palatul Principilor takes you back to Romanian unification's origins. This Princes' Palace, built in the 16th-17th centuries on the Roman site of Apulum, was the capital of the principalities united under Mihai Viteazul between 1599 and 1601. This visionary prince achieved the first unification of the three Romanian principalities, three centuries before 1918. In the restored halls, your app reconstructs the 1600 princely court, when Alba Iulia dominated territory stretching from Moldavia to Wallachia. Roman foundations surface beneath your feet, reminding that this land was already an empire crossroads.
The Catedrala Romano-Catolică Sfântul Mihail houses the tomb of Giovanni Morando Visconti, the Italian architect who died of plague in 1718 before completing his citadel. This 13th-century Gothic cathedral, integrated into the bastioned walls, symbolizes Alba Iulia's religious continuity through the centuries. Facing it, the Catedrala Încoronării, built between 1921 and 1922, replaces the Orthodox metropolis destroyed in 1714 by the Habsburgs. These two cathedrals embody united Romania's confessional reconciliation, Catholics and Orthodox now sharing the same citadel. The Obeliscul lui Horea, Cloșca și Crișan completes this pantheon of Romanian resistance.
At Bastionul Sașilor, the last vestige of the medieval fortress incorporated into the modern citadel, you measure your quest's scope. This Saxon bastion, part of the three fortifications route, reveals Alba Iulia's strata: Roman with Apulum, medieval with the Saxon city, modern with Vauban's citadel. Your mission ends here, in this architectural synthesis of Romanian history. You leave with the enigma's key: Alba Iulia isn't just the site of 1918's union, but the millennial crucible where Romanian identity was forged, from Trajan's legions to Ferdinand's delegates.
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
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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Relive the splendor and symbolism of the birth of a united kingdom, over a century ago.
Decipher the founding principles of Greater Romania, hidden within the stones of the citadel.
Explore the Alba Carolina Citadel, a historic site where history has been written since antiquity.
Union makes strength, perseverance forges destiny.
Join the architects of Romanian unity.
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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Walk on the cobblestones where modern Romania's unification was proclaimed on December 1st, 1918, in the country's largest bastioned 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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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
15€. Collections d'armes et documents originaux de 1918, reconstitution de la salle des délégués avec audioguides en français.
12€. Vestiges romains in situ et reconstitution 3D de la capitale de Mihai Viteazul, visite guidée en costumes d'époque le dimanche.
25€. Eau-de-vie de prune locale dans les caves voûtées du Bastion des Tisserands, accompagnée de mici grillés et fromages des Carpates.
30€. Projection mapping sur les bastions de Vauban tous les vendredis à 21h, reconstitution de la bataille de 1785 avec effets pyrotechniques.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.