Caernarfon — Uncover Edward's Iron Grip
Decipher the secrets of Edward I's conquest: uncover the hidden codes in Caernarfon's fortress walls and expose the rebellion that nearly shattered the Iron Ring.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1283, King Edward I of England crushed the last independent Prince of Wales and began an audacious campaign to lock the Welsh nation behind stone
Caernarfon — Uncover Edward's Iron Grip
You are a royal archivist in the service of Edward I, autumn 1283, tasked with inspecting the Iron Castles' construction sites and consolidating English control over North Wales.
Discover Caernarfon, Edward I's fortress, built from 1283 to assert English conquest over Welsh Gwynedd.
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
« Ich dien »— Prince of Wales, Official motto adopted at the investiture of the Prince of Wales at Caernarfon Castle, 1911
The story that haunts this land
Your quest begins at Caernarfon Castle's King's Gate, the main entrance erected from 1283 under Edward I. This ceremonial gate, approximately 20m high, was equipped with two portcullises and a drawbridge over a dry moat, vital defenses against Welsh assaults. It was here that the first investiture of the Prince of Wales took place in 1301 for Edward I's son, marking a strong political act for English dominance over North Wales. The arrow slits for archers, still visible, recall 13th-century military engineering.
Continue your investigation within Caernarfon Castle, a UNESCO World Heritage site since 1986. This iron castle, completed around 1330, symbolizes Edward I's conquest of Gwynedd. In 1969, it was the birthplace of the Prince of Wales, perpetuating a tradition initiated by Edward II, born here in 1284. The imposing military architecture of the ramparts and towers illustrates the English king's will to power over the Welsh territory.
Ascend to the Eagle Tower, 21.6m high and built around 1315-1320, named for its eagle statues on the corners. Edward II stayed here in 1284, a sign of the importance of this vantage point over the Menai Strait. Its three decorative fireplaces, inspired by Byzantine designs, testify to an unusual architectural sophistication for a fortress. Nearby, the Queen's Tower, the northeastern section built in the 1280s-1290s, is associated with Queen Eleanor of Castile, Edward I's wife, offering a different perspective on royal life within this North Wales stronghold.
Descend towards Caernarfon Harbour, a historic port developed in the 13th century to supply the castle's construction from 1283 to 1330. This 2-hectare basin was a medieval trade hub for wool and wine, essential to the economy of Caernarfon town. From the quay, the direct view of the castle towers reinforces the link between the fortress and its maritime access. Further east, 1 km away, you will discover Segontium Roman Fort, founded around 77-78 AD under Cn. Iulius Agricola to control the Ordovices. Its 3m thick walls housed up to 1000 soldiers, illustrating a Roman military occupation nearly twelve centuries before Edward I's arrival.
Your exploration of Caernarfon will have taken you through centuries of domination, from the Roman Empire to the English monarchy. Returning to Castle Square (Y Maes), the central square that served as a medieval market since the 13th century, you will encounter the statue of David Lloyd George, the Welsh Prime Minister inaugurated in 1923, a reminder of the enduring Welsh identity despite conquests. This walking tour offers a deep understanding of Caernarfon's history, a major historical site in North Wales, and its role in the construction of British identity, a Scheduled Ancient Monument perpetuating the memory of the Castles and Town Walls of King Edward in Gwynedd.
The Route
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.
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?
Imperial Fortress
Built according to a Byzantine plan, Caernarfon Castle is a masterpiece of military engineering and a symbol of power.
Royal Succession
Uncover the history of the Princes of Wales, from the first investiture of Edward II to that of Charles III.
Conquest Strategy
Unravel the secrets of Edward I's policy to subdue Wales to the English crown.
Stone tells the story, domination is etched in eternity.
Edward I
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
Discover Caernarfon, Edward I's fortress, built from 1283 to assert English conquest over Welsh Gwynedd.
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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