Ujué — Secret of the Bad King's Heart
Uncover the dark secret of Charles II the Bad's heart, hidden in Ujué's fortress church. Decode medieval clues across the stone village to expose why he chose this mountain sanctuary for his cursed relic.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the 14th century, Charles II the Bad, King of Navarre, ruled with treachery and cunning
CHARLES THE BAD — BETWEEN LEGEND AND ULTIMATE CONFESSION
In the 14th century, Charles II the Bad, King of Navarre, ruled with treachery and cunning. Devoted to the Virgin of Ujué, he transformed the Romanesque church into a Gothic fortress and decreed his heart be enshrined at her altar after death. But whispers persist: was it true piety, or a sinister plot to conceal a royal curse, poisoned relic, or map to lost treasure? His body lies in Pamplona, viscera in Roncesvalles—only his heart rests here, guarded in a glass urn behind the apse grille. Legends tell of hidden inscriptions in the crenellated towers, cryptic symbols on ancient stones, and pilgrim paths veiling the truth. Rivals plotted against him; did he outwit them with a final enigma in Ujué's medieval heart? Starting from the village square, decipher clues at the sanctuary's towers, stone houses, and mountain vantage points. Piece together the conspiracy across this compact hilltop fortress—expose the secret of the Bad King's heart before it claims another soul.
A game, a guided tour and a city guide — all in one
You're not just buying an escape game. You're carrying a living city guide — historical anecdotes, forgotten legends, key monuments, hidden architecture — unfolding step by step as you walk.
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. »
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
« My body to Pamplona, my entrails to Roncesvalles, and my heart to Ujué, where I desire it to rest forever. »— Charles II of Navarre, Testament (1387)
The King with a Divided Heart
Charles II of Navarre, nicknamed 'the Bad' by his contemporaries, is one of the most controversial figures in medieval history. His reign (1349-1387) was a period of incessant intrigues, political betrayals, and shifting alliances, placing him at the heart of the Hundred Years' War conflicts between France, England, and Castile. Although often depicted as an unscrupulous sovereign, he was also a builder, a legislator, and a patron of the arts, leaving a complex and fascinating legacy.
Upon his tragic death in 1387, under legendary circumstances (his alcohol-soaked bed sheet caught fire), Charles II made a most peculiar last testamentary request: the separation of his body. His heart, a symbol of his deep attachment to his kingdom, was embalmed and solemnly transported to Ujué, a pilgrimage site dear to the Navarrese. This fortress-sanctuary thus became the silent guardian of this precious reliquary, perpetuating the myth of the king with a separated heart.
The Route
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.
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 · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
A King's Legacy
Follow in the footsteps of Charles the Bad through the alleys of his heart's fortress.
Enigmatic Testament
Decipher the secret clauses of a royal testament that hides a disturbing truth.
Sacred Pilgrimage
Undertake a symbolic pilgrimage to reconstruct the sovereign's last wishes.
The king's heart still beats, if you know how to listen.
Dive into the intrigues of the Kingdom of Navarre.
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, WhatsApp, 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
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Vous avez joué à le secret du coeur mauvais? Rendez-vous dans l'email reçu après votre partie pour laisser un avis vérifié.
Your turn to play
Unravel the mystery surrounding Charles the Bad's heart and reveal its final secret.
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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