🕒 No date to pick · Code valid 1 year · Play whenever you want
Get my code
Decipher a hidden anti-fascist manifesto buried in a Cold War artist's studio. Uncover the coded message that defied Tito's regime.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the 1960s, Grožnjan transformed from a war-ravaged Istrian hilltop into a haven for Yugoslav artists fleeing political surveillance
You are a newly recruited member of the Grožnjan Artists' Resistance, tasked in a crucial era to safeguard the village's cultural heritage.
Your mission takes you through Grožn
Immerse yourself in the heart of Istria, in Grožnjan, a medieval village transformed into an artistic haven, where every cobbled street whispers the secrets of cultural resistance.
Your journey begins in Trg Umetnika, the Artists' Square, Grožnjan's main tourist starting point. This heart of the artists' quarter, surrounded by medieval and Renaissance buildings, saw the village transform into an artists' colony after World War II, attracting painters and musicians. It is here, in this Istrian artists' village, that you must decipher the first instructions left by your mentor, a veteran of the colony who resisted attempts to despoil local art. The initial clues to the Artist's Resistance Code are etched in the vicinity of this central square in Grožnjan.
Continuing your visit to Grožnjan, you reach the Loggia, a 16th-century Venetian structure. This Renaissance building, typical of Istria under Venetian rule between 1420 and 1797, served as a public gathering place and market. Your quest invites you to examine the ornaments of this loggia located on the main square, where past artisans concealed clues. This monument, an architectural emblem, reveals how art and culture served as a bulwark against invasions and shifts in power, a cultural resistance that echoes your own mission within Croatia's medieval heritage.
Your path then leads you to the Crkva Svetog Vida, Modesta i Kresencije, the parish church built in the 14th century, with Baroque additions in the 17th century. Dedicated to Saints Vitus, Modestus, and Crescentia, its interior is adorned with frescoes and a marble altar. Integrated into the village's historical fabric, this church is a visible landmark during your 1.5 km walk around Grožnjan's center. It is in its architectural details that you will search for symbols left by a former master, a member of your clandestine network who used religious iconography to hide his messages. Sunlight filtering through the stained glass windows might reveal the next step of your scavenger hunt in Grožnjan.
You then walk along the Gradske zidine, the medieval ramparts dating from the 13th-14th centuries, which protected the village against Venetian and Ottoman invasions. These partially preserved remains are integrated into the cobbled alleys of Ulica Gradić, a narrow street typical of medieval Istrian villages. These ramparts are part of Istria's fortified heritage and connect Grožnjan to the region's defensive history. A message is hidden in the interstices of the ancient stones, a code that reveals the history of the Spinotti-Moro family, 18th-century Istrian aristocrats, and their role in preserving the city's artistic treasures, a key element of your thematic circuit in Istria.
Your route then takes you to the Palača Spinotti-Moro, an 18th-century noble palace with Baroque architecture, located in the historic heart near Trg Umetnika. This palace, a testament to Istria's Venetian noble history, holds crucial clues related to the Spinotti-Moro family. Finally, the Fontana, a historic public fountain in the center dating from the 16th century during the Venetian period, reveals the last secret. As a functional element of Istrian squares, it symbolizes the water supply of fortified villages. Each step of this interactive visit to Grožnjan brings you closer to the truth, allowing you to reconstruct the entire Artist's Resistance Code, and discover the soul of this artists' village in Istria, a true treasure of Croatia's medieval heritage.
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.
The game downloads to your phone on start. Once the "✓ Downloaded" indicator appears, everything works without data — narration, AR, GPS and puzzles. Perfect abroad without a data plan.
Places tied to your adventure — optional entries, totally up to you · per person
5-10 curated sites across the territory
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 · 14,90€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Mix art and state secrets in a historic village with a tumultuous past.
Reconstruct a secret manifesto, hidden by an artist during the Cold War.
Explore the cobblestone streets and panoramas of Grožnjan, Istria's medieval gem.
Between art and shadow, truth is painted in secret ink.
Unveil Grožnjan's manifesto.
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.
Same spirit: search, deduce, find. But here the "treasure" is a full story to piece together in eight stops. Each stop gives you a fragment of the final code. Eight fragments later, you've cracked it.
Eight stops total. At each stop you find a camera clue, solve the puzzle, collect a fragment of the final code. With all eight, you've got the answer.
Yes, from age 6 with an adult reading puzzles aloud, and from age 12 on their own. Kids love the "find the camera clue" part — it's very visual, gets them genuinely involved.
Intermittent 4G is plenty. Maps are cached at startup. Narration and clues load per stop, so a so-so signal between stops is fine. GPS itself uses no data.
Soyez le premier à partager votre expérience.
Did you play le manifeste cache de groznjan? Check the email you received after your game to leave a verified review.
Immerse yourself in the heart of Istria, in Grožnjan, a medieval village transformed into an artistic haven, where every cobbled street whispers the secrets of cultural resistance.
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
More destinations, tours & urban treasure hunts across the country
Between Roman ruins and the Adriatic Sea
Vibrant Adriatic port, where history meets culture
Pula: Tracing the Roman Empire's legacy in Istria
Adriatic gem, where ancient history meets turquoise waters.
City of Uskoks and Adriatic fortress
Where Austro-Hungarian grandeur meets Balkan spirit
Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Accès libre. Explorez les nombreuses galeries d'artistes locaux et internationaux qui animent les ruelles de Grožnjan, particulièrement dans l'Ulica Gradić.
Prix variable selon les concerts. Si vous visitez en juillet, assistez aux performances musicales qui animent la Trg Umetnika et les autres places du village.
À partir de 15€. Visitez une huilerie locale aux alentours de Grožnjan pour découvrir les saveurs de l'huile d'olive extra vierge d'Istrie, réputée mondialement.
Accès libre. Empruntez une section de l'ancienne voie ferrée Parenzana, transformée en piste cyclable et pédestre, offrant des vues sur les paysages vallonnés de l'Istrie centrale.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.