Gorjanović's Hidden Truth — The Neanderthal Conspiracy
Decipher the cryptic field notes of paleontologist Dragutin Gorjanović-Kramberger to uncover why the Krapina Neanderthals were ritually marked—and what he concealed from the world.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1899, Croatian paleontologist Dragutin Gorjanović-Kramberger made a discovery that shook the scientific world: 80 Neanderthal individuals buried together on Hušnjakovo Hill, their bones bearing str
Gorjanović's Hidden Truth — The Neanderthal Conspiracy
You are a newly appointed research assistant to Professor Dragutin Gorjanović-Kramberger, Krapina, 1903.
Your mission begins in front of Krapina
Dive into the depths of time in Krapina, Croatia, and uncover the secrets of a forgotten humanity, 130,000 years before our era.
A game, a guided tour and a heritage guide — all in one
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. »
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
The story that haunts this land
Your journey in Krapina begins in front of the Gradska Vijećnica, the neo-baroque town hall built in 1903. This building, which has housed the municipal archives since its inauguration, is a central point in the historic city center of Krapina and the Zagorje region. It is here, at the heart of the institutions, that you begin your quest for hidden truths about Neanderthals. The early 20th-century facades bear witness to the effervescence of the era when Dragutin Gorjanović-Kramberger conducted his research. Your first puzzle invites you to decipher a message concealed in the architectural ornaments, revealing the initial clues about the major discoveries awaiting Krapina.
A few steps away, the Stara tiskara Krapina, a historic former printing house from the early 20th century, marks the second stage of your journey. This building, linked to local cultural history, was a center for the dissemination of ideas and knowledge. Perhaps this is where Dragutin Gorjanović-Kramberger's first scientific publications were printed, announcing to the world the richness of the Hušnjakovo brdo Paleolithic site. You must reconstruct a fragmented text to understand how the news of the 1899 fossils traveled from Krapina, influencing the European scientific community and beyond.
The path then leads you to Trg Ljudevita Gaja, Krapina's main square, named after the Croatian philologist Ljudevit Gaj (1809-1872). Surrounded by 19th-century buildings, this square has been a place for public gatherings since that period. It is here, at the heart of Krapina's social life, that you discover fragments of daily life from Gorjanović-Kramberger's time. A series of visual clues related to events that occurred in this square allows you to unlock a secret archive, revealing details about the initial controversies surrounding the discovery of Neanderthal fossils.
Your exploration then takes you to Hušnjakovo brdo, the historic hill where Dragutin Gorjanović-Kramberger discovered the first Neanderthal fossils in Croatia in 1899. This excavation site, covering 165 m² with natural caves occupied 130,000 years ago, is recognized as a major Paleolithic site in Europe. Here, at an altitude of approximately 200 m and 1 km from Krapina's center, augmented reality holograms show you Neanderthal tools and traces of life. You must analyze the topography and virtual remains to understand Gorjanović-Kramberger's excavation techniques and the context of his discoveries.
The culmination of your adventure is the Muzej krapinskih neandertalaca, the Krapina Neanderthal Museum, founded in 1911 and opened to the public in 1975 in a modern building on the excavation site. This museum houses over 800 Neanderthal bone fragments dating back approximately 130,000 years, a treasure for paleoanthropology. Right next to it, the Spomenik Dragutinu Gorjanoviću-Krambergeru, erected in 1957, honors the paleoanthropologist and his excavations from 1899-1906. Your mission ends here, by confronting the facts with Gorjanović-Kramberger's theories, and understanding the scientific and tourist legacy of Krapina, the cradle of the Zagorje Neanderthals.
The Route
8 sites to explore by car within the day
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 · 14,90€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Scientific Investigation
Solve a paleontological mystery.
Encrypted Notes
Demystify a secret logbook.
Neanderthal Legacy
Understand the impact of Krapina's discoveries.
Every fossil is a word in the great book of Earth's history.
Inspired by Dragutin Gorjanović-Kramberger
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, 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.
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Your turn to play
Dive into the depths of time in Krapina, Croatia, and uncover the secrets of a forgotten humanity, 130,000 years before our era.
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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