Everest Base Camp — Mallory's Lost Compass
Uncover the fate of Mallory and Irvine's 1924 summit bid. Track their final steps from Base Camp, decipher clues from expedition relics, and solve the mystery of the lost compass holding proof of their triumph or tragedy.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1924, British mountaineers George Mallory and Andrew 'Sandy' Irvine vanished on Everest's North Face during their daring summit attempt
Everest Base Camp — Mallory's Lost Compass
You are a young Sherpa, a member of Tenzing Norgay's 1953 expedition, in the Everest region of Nepal.
Your mission: find a crucial
On the steep slopes of the Himalayas, follow in the footsteps of Everest pioneers and solve the mystery of George Mallory's lost compass.
The story that haunts this land
Your quest begins in front of the Tenzing Norgay Monument in Namche Bazaar, a reference point for trekkers in Sagarmatha National Park. This monument, erected in honor of Tenzing Norgay (1914-1986), the Sherpa who summited Everest with Edmund Hillary on May 29, 1953, immediately immerses you in the Himalayan epic. Namche Bazaar is the main Sherpa village at 3440 m altitude and a commercial hub since the 1960s. It is here, within a 1.5 km walk, that the first traces of Mallory's compass might be found, among ancient tales and artifacts of the past.
Continue your exploration in the heart of Namche Bazaar, the administrative center of Sagarmatha National Park, a UNESCO World Heritage site since 1979. This village is the typical starting point for treks to Everest Base Camp (5364 m), several days' walk away. The Saturday weekly market, lodges, and local museums dedicated to Himalayan history and the Yeti are all places where clues might be hidden. You delve into accounts of past expeditions, searching for anything that could bring you closer to the truth about George Mallory (1886-1924) and his lost equipment.
Your journey then takes you towards Syangboche Airport, a historic airfield at 3785 m, one of the highest in the world. Used since 1940 to supply Everest expeditions, this site, about 1 km from Namche Bazaar, offers views of the Lukla airfields. It is closely linked to the first British expeditions of the 1920s-1930s, the very era of George Mallory. Today an airstrip for helicopters supporting treks to Base Camp, Syangboche is a place steeped in history where memories of these initial explorations might resurface.
After Syangboche, a short walk of about 1 km via trails leads you to the Everest View Hotel, inaugurated in 1971 at 3880 m. The first luxury hotel with Everest views, built by the Nepalese government, it is used for acclimatization before treks. From here, the panoramas of Everest (8848 m), Ama Dablam, and other Khumbu peaks are breathtaking. This location symbolizes the history of post-1953 trekking, facilitating tourist access to Base Camp and offering a unique vantage point to reflect on the challenges of early mountaineers, including Mallory and Irvine (1924).
Your quest concludes at the Sherpa Museum, an ethnographic museum in Namche Bazaar, opened in 2004. Very close to your starting point, this museum is dedicated to Sherpa culture and the history of Everest ascents, displaying artifacts related to Hillary and Tenzing, as well as the Mallory-Irvine expeditions. A confidential collection of Yeti relics and photos from pre-1950 expeditions is kept there. It is here that you hope to find the final clue, the resolution of your investigation into the lost compass, and understand the role of Namche Bazaar, the Khumbu Sherpa capital, in this Himalayan legend.
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 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?
Arctic Adventure
Defy the elements and extreme conditions of the high Himalayan mountains.
Historical Trail
Reconstruct the journey of Everest pioneers and their daring expeditions.
Unfathomable Mystery
Solve one of the greatest mysteries of mountaineering and exploration history.
Climb history, one step at a time.
The secret of the summit awaits you.
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
On the steep slopes of the Himalayas, follow in the footsteps of Everest pioneers and solve the mystery of George Mallory's lost compass.
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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