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Uncover the Legate's encrypted final orders hidden among Noviomagus ruins. Decode Batavian clues across Valkhof to expose a treasonous plot before it rewrites Roman history.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 98 AD, Legate Gaius Ulpius, Trajan's trusted commander, vanished from Ulpia Noviomagus Batavorum—Nijmegen's Roman heart
You are an imperial emissary from the Holy Roman Empire, dispatched in 1030 by Emperor Henry II to Nijmegen.
Your mission: secure a lost Roman cipher, capable of revealing an
Immerse yourself in the heart of Nijmegen, the oldest city in the Netherlands, where Carolingian emperors built upon Roman camp foundations and Batavian legends still whisper beneath the cobblestones.
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. »
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
« For Liberty and Justice »— Official motto of the city of Nijmegen
Your journey begins at Valkhof Park, a Dutch national monument classified in 1969. Here, on the site of a Carolingian palace built by Charlemagne around 777, you search the 1st and 2nd-century Roman ruins, remnants of the legionary camp of Noviomagus, capital of the Batavians. Emperor Henry II had the Saint Nicholas Chapel built here in 1030, whose remains you examine. Every stone in this Nijmegen park, overlooking the Waal from the Kops Plateau, reminds you of Nijmegen's long history, from Drusus's fortifications to medieval emperors. This route is an immersion into a potential UNESCO Roman heritage site.
A short walk away, Museum Het Valkhof, opened in 1999, welcomes you to its 2500 m² space. It is here that the Roman treasure of Nijmegen, consisting of 18 silver statuettes from the 2nd century, awaits your examination. You also discover the reconstructed remains of the Roman forum of Noviomagus, capital of the Batavians. The collection of Byzantine icons from the 11th-16th centuries, including a Virgin Hodegetria icon dating from around 1200, offers a striking contrast with antiquity, highlighting the cultural richness of Nijmegen and Gelderland.
Your investigation then leads you to the Stevenskerk, a Gothic church built between 1316 and 1550 from Ubbergen sandstone. Its 75-meter high tower and bells dating from 1498-1657 resonate with the history of Nijmegen's old town. Used as a parish church until 1965, it has been a concert hall since 1974. The historic organ from 1618, restored in 1982, offers you an acoustic break before continuing your GPS scavenger hunt, revealing the secrets of this Dutch national monument.
The Grote Markt, a central square since the 13th century, was the heart of medieval commerce in Nijmegen. The neo-Gothic town hall from 1554, with its 56-meter tower, dominates the square. You observe the statue of Mariken van Nieumeghen (1922), a 16th-century literary character, and imagine the weekly markets held there since 1205, following the market charter granted by Otto II. This site in Nijmegen's history is a must-see to understand the urban development and heritage of Gelderland, before entering Lange Hezelstraat, the city's oldest street, paved since the 13th century and lined with over 200 historic monuments from the 16th-18th centuries. This ancient pilgrimage route to Santiago de Compostela testifies to medieval exchanges.
Your exploration culminates at the Mariënburgkapel, a Gothic chapel built between 1481 and 1509 with its rib vaults. 33 m long and 15 m high under the vault, it houses 16th-century frescoes depicting the Virgin and Child. Having served as a warehouse during World War II before being restored in 1953, it embodies Nijmegen's resilience. This thematic circuit of Gelderland will have offered you an interactive visit, leaving you with the satisfaction of having deciphered a part of Nijmegen's history, from Roman legions to medieval pilgrimages, and of having discovered a unique heritage in augmented reality. You leave with a deep understanding of the city, its monuments, and its central role in Dutch heritage.
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.
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 · 12€No calendar booking. Code sent immediately by email.
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Uncover a fragmented Roman architectural plan, hidden for centuries.
Explore archaeological sites and traces of the Empire in Nijmegen.
Reconstruct the legacy of a visionary legate before it is lost.
The past is a treasure, if you know where to look.
Will you find the legate before it's too late?
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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Immerse yourself in the heart of Nijmegen, the oldest city in the Netherlands, where Carolingian emperors built upon Roman camp foundations and Batavian legends still whisper beneath the cobblestones.
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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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
17,50€. Admirez le trésor romain de Nijmegen, 18 statuettes en argent du 2e siècle, et les vestiges du forum de Noviomagus.
Accès libre. Découvrez l'architecture gothique du 14e siècle, la tour de 75 mètres et l'orgue historique de 1618.
Accès libre. Imprégnez-vous de l'ambiance des marchés hebdomadaires qui se tiennent ici depuis 1205, au pied de l'Hôtel de Ville de 1554.
Accès libre. Profitez de la vue sur le pont ferroviaire de 1879, le premier des Pays-Bas, et imaginez le port romain de Noviomagus sous vos pieds.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.