The Höfði Cipher — Decode the Summit's Hidden Accord
October 1986: Decipher the secret clauses Reagan and Gorbachev negotiated behind closed doors at Höfði House. Uncover what the world was never meant to know.
📱 1 to 10 phones · 1 team per phone · Independent codes
On October 11–12, 1986, the eyes of the world fixed on a modest wooden house overlooking Faxaflói Bay
The Höfði Cipher — Decode the Summit's Hidden Accord
You are a diplomatic intelligence officer, October 1986, on a critical assignment in Reykjavik.
Your mission: decipher the secret clauses negotiated by Reagan and Gorbachev behind Höfði House'
Delve into the heart of the secret negotiations that reshaped the global geopolitical map in Reykjavik in October 1986.
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
« I will strengthen you with my right hand of justice »— Historical Icelandic motto, biblical context
The story that haunts this land
Your quest begins at Ráðhús Reykjavíkur, Reykjavik City Hall, strategically located on the shores of Tjörnin lake. This modern building, inaugurated in 1992, symbolizes the Icelandic capital's capacity to host major diplomatic events. As you traverse downtown Reykjavik, you will walk along Tjörnin lake, a major geographical landmark. This preserved natural environment, used as a tourist promenade area since the 18th century, offers a striking contrast to the intensity of the negotiations you are about to decipher. The City Hall's proximity to this central urban lake facilitates an immediate immersion into 'The Höfði Cipher' walking tour.
Continuing your walking tour in Reykjavik, you will reach Alþingishúsið, the Icelandic Parliament House. Built in 1881 in a classic Danish architectural style, this monument is the seat of the Althing, the world's oldest continuously functioning parliament, founded in 930 AD at Þingvellir. Located on Kirkjustræti, about 500 meters from Ráðhús, it represents a strong Icelandic political symbol, directly linked to the diplomatic theme of the Reykjavik Summit 1986 negotiations. Here, the stakes of sovereignty and international relations resonate with the weight of decisions made at Höfði.
The heart of your mission leads you to Höfði House, a former fishermen's refuge transformed into a diplomatic residence. It was in this historic building from 1909, located on the Seltjarnarnes peninsula, that Ronald Reagan and Mikhail Gorbachev met in October 1986 for the Reykjavik Summit. This key site of 'The Höfði Cipher' tour invites you to decipher the secret clauses negotiated by the two superpowers on nuclear disarmament. Nearby, you will discover Sólfarið, 'The Sun Voyager', a monumental stainless steel sculpture created by Jón Gunnar Árnason in 1974. Inspired by Norse mythology and Viking history, it symbolizes exploration and hope, offering panoramic views of Faxaflói Bay.
Your exploration of Reykjavik continues towards Harpa, the concert hall and conference center. Opened in 2011, this masterpiece of contemporary architecture, with its colored glass facade of 1,200 panels, contrasts with the historical sites of the tour. This building, located in Reykjavik's port, about 1 km from the city center, symbolizes Icelandic modernity and its place on the international stage. As you walk along Lækjargata street, a historic downtown artery dating from the 18th-19th centuries, you will observe traditional Icelandic architecture that testifies to the urban heritage, connecting the diplomatic past to the vibrant present of the capital.
The tour concludes at Ingólfstorg, Reykjavik's central historic square, named after Ingólfur Arnarson, the city's legendary founder in 874 AD. This convergence point of medieval trade routes is a symbol of Icelandic identity and Viking history, providing a powerful thematic context for diplomatic negotiations. By completing your diplomatic scavenger hunt in this emblematic location, you will have not only decoded the secrets of the Reykjavik Summit 1986, but also explored major sites of Icelandic historical heritage, from mythical past to the architectural modernity of the capital. This interactive journey will have allowed you to understand the forces that shaped Reykjavik and its role in world history.
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?
Diplomatic Espionage
A thrilling quest into the heart of Cold War secrets.
Cold War Setting
Relive the tensions and hopes of a pivotal era.
Hidden Documents
Decipher clues to reveal a forgotten protocol.
The silence of diplomacy holds the greatest secrets.
Find the protocol that could have changed history.
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
Delve into the heart of the secret negotiations that reshaped the global geopolitical map in Reykjavik in October 1986.
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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