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Live the city's hidden legend
2–3-day roadtrip · Lisboa
📱 1 to 10 phones · 1 team per phone · Independent codes
5 sites · 30 km · your own pace
You are a 'Sentinelle Marítima', a mystic of the 15th-century Order of the Atlantic Gates, tasked with protecting Lisbon's borders from forgotten forces.
Your mission takes
At the edge of Lisbon, where the Tagus meets the Atlantic, an ancient secret threatens to tear through the veil of time.
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.
Places tied to your adventure — optional entries, totally up to you · per person
« Where the land ends and the sea begins »— Luís de Camões, Inscription engraved on the monument of Cabo da Roca
Your quest begins on the Cascais waterfront, where the Cascais Citadel, erected in 1588, still stands, about 30m high, witnessing Spanish and pirate attacks. Fort Nossa Senhora da Luz, completed in 1594 under Philip I of Portugal, recalls the Iberian Succession Crisis of 1580 and post-invasion coastal defense. The Cascais Marina, opened in 1992 with a capacity for 650 boats, contrasts with the military history of the site. It was here, in Cascais, that King Luís I transformed the city into a royal seaside resort in 1870, introducing the first Portuguese bathing cabins in 1878. A historic starting point to understand the evolution of the Lisboa region.
Continue your journey to Boca do Inferno, a sea cave sculpted by coastal erosion and named 'Hell's Mouth' in the 19th century due to the sound of the waves. The 30m wide opening is a portal to another world. The Cascais railway line, inaugurated in 1895, facilitated access to this site for tourists from Lisbon. But Boca do Inferno holds a darker secret: in 1899, the steamer 'Lusitano' was shipwrecked here, causing 15 deaths. The bodies were recovered via the cave, an event that reinforces the mystical dimension of this spectacular place, essential for the heritage of the Lisboa region.
Next, explore the coastal parks towards Guincho, within the Sintra-Cascais Natural Park, created in 1981 and covering 14,580 hectares of dunes and cliffs. Guincho Beach has been a windsurfing competition site since the 1980s, with winds reaching 40-60 km/h, and served as preparation for the 1996 Olympic sailing events. Fort de São Bruno at Guincho, built in 1640 to monitor the bay, was restored in 1970. It was used as a political prison under Salazar between the 1930s and 1974. This site connects you to both wild nature and Portugal's political history, another aspect of visiting Lisbon.
Your route then leads to viewpoints over the palaces of Sintra, a UNESCO site since 1995. Admire the Pena National Palace, built between 1840 and 1850 under Ferdinand II, its main viewpoint culminating 500m above sea level. The Moorish Castle, rebuilt in the 1840s by the same Ferdinand II for its panoramic views, recalls the Moorish invasions of the 8th-12th centuries with its 450m perimeter. Quinta da Regaleira, acquired in 1892 by Carvalho Monteiro, hides an initiation well 27m deep, completed in 1910, and gardens with 5km of secret paths. Nearby, Monserrate Palace, built 1856-1860 by Italian architect Luigi Rocchi for the Cook family, completes this vision of the jewels of the Pena Palace National Monument, a thematic circuit essential for the Lisboa region.
Finally, reach Cabo da Roca, the westernmost point of continental Europe, at 38°47'N 9°30'W, its cliffs rising 140m. The Cabo da Roca Lighthouse, built in 1772, projects its light 26 nautical miles. This place was used by Portuguese navigators of the 15th century as the last landmark before the Atlantic, linked to Vasco da Gama's expeditions in 1497. It is here, at this extreme western point of Europe, that your quest ends, the ocean's breath reminding you of the immensity of the journeys and discoveries that have marked the history of Lisbon and Portugal. The Sintra-Cascais Natural Park is a setting for this exploration of Lisboa monuments, a 2-day or longer Lisboa roadtrip.
5 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
2–3 days at your own pace.
Designed to be played from outside paid sites. Tickets are optional.
Each site precisely geolocated.
Immersive roadtrip
AR at every site
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.
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.
GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.
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.
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).
From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.
Pre-register or contact us — we'll email you as soon as your city is live.
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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At the edge of Lisbon, where the Tagus meets the Atlantic, an ancient secret threatens to tear through the veil of time.
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
Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
20€. Explorez l'intérieur coloré et les salles royales de ce Monument National emblématique de Sintra, construit par Ferdinand II.
12€. Plongez dans les jardins labyrinthiques et le mystérieux Puits Initiatique de 27m de profondeur de Carvalho Monteiro, achevé en 1910.
3-5€. Savourez cette pâtisserie typique portugaise, souvent fourrée à la crème, sur l'une des plages de Cascais, comme le faisaient les rois en 1878.
Location matériel 20-30€. Profitez des vents de 40-60 km/h de la Plage du Guincho, célèbre site de windsurf depuis les années 1980.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.