Secrets of · Scavenger hunt
Secrets of Valkenburg Self-Guided Scavenger Hunt & Walking Tour
1.5–2 hours · 1–4 players per team · no app€19.95 per team
Detective Murder Mystery GameDetective Murder Mystery Game Valkenburg
- 1.5–2 hours
- The same story in every city: like an escape room, this story is yours to crack once, so pick the city that makes it special. Want more? Secrets games tell a new story in every city.
- 1–4 players per team
- On your own phone, no app
- Language of the game: English +31
- Start any time within 12 months
- Free cancellation until you start
A self-guided detective murder mystery through Valkenburg, from the castle ruins to the Wilhelmina Tower.
On the route
12 places, in this order
- Valkenburg Castle Ruins
- Velvet Cave Entrance
- Grendelpoort City Gate
- Walram Square
- Kuurbos Park
- MergelRijk Cave
- Municipal Cave Entrance
- Valkenburg Cable Car
- Wilhelmina Tower
- Geulpoort City Gate
- St. Nicolaas en Barbarakerk
- Valkenburg Coal Mine
Step into the story
A murder in the city
You are Sherlock Holmes, and Watson is at your side. Balthazar has been found dead, four people had a reason, and only one of them did it.
- 1.5–2 hours
- 1–4 players per team
It beginsAnd we need you to find out who killed Balthazar.
It goes wrongYou ring the bell. Nobody opens the door but you catch a shadow moving through the house! Somebody is home!
Your moveWalk the city, question the witnesses, gather the evidence and name the killer. Good luck, and have fun.
Every player takes on one of these roles.
The Reasoner
The Lookout
The Photographer
The Casebook
A murder in Valkenburg, one victim called Balthasar, and a suspect list that only gets shorter if you go and look.
This is a self-guided murder mystery game you play outdoors, at your own pace, with Valkenburg for a board. Your phone carries the case file and the city carries the evidence. Clues to gather, digital characters to question, codes to break and a name to give at the end - a detective game with no host at a meeting point, no timetable and no group to keep up with.
Among the addresses in the file: Valkenburg Castle Ruins, Velvet Cave and Grendelpoort City Gate.
Where the Case Takes You in Valkenburg
Walram Square and Kuurbos Park are on the route as well. Anyone keeping decent notes will find they only have to confirm there what they already suspect.
Had great fun playing secrets of Haarlem!
Playing the Detective Game in Valkenburg
You move, the case moves. Each stop has something to solve and each digital character has something to say once you have solved it, and the suspect list shortens accordingly. Figure on 1.5 to 2 hours across 3 to 4 km, with as many breaks as you feel like taking. It asks the sort of attention Sherlock Holmes made his name on - the detail other people step over.
Who Plays This in Valkenburg
With friends. Four of you on one phone and everybody gets a say. Somebody always commits to a theory early, loudly, and wrongly - that is half of what you will talk about afterwards.
With your team. Split into fours, buy a ticket each, and send them off on the same murder. Team building without a facilitator, a venue or a start time - and in Valkenburg that means nobody has to be anywhere by nine.
With kids. Eight and up manage it comfortably. Children are usually quickest on the photo tasks, and teenagers who have stopped being impressed by old buildings get competitive about the puzzles instead.
Frequently Asked Questions
How does the murder mystery game work?
You play it through a direct link in the browser on your own phone. It opens in Valkenburg, the story moves with you, and every stop holds a puzzle, a code or a photo task standing between you and the next piece.
How long does it take?
Between one and a half and two hours for most groups, across 3 to 4 km. Slower is free: nothing is timed and nothing expires while you are having lunch.
How many people can play on one ticket?
One ticket covers one to four players on a single device, €19.95 in total. Bigger groups buy one ticket per four and race each other through the same murder.
Do we need to book a time?
You pick a date, not a slot. Start at nine or start at four; nothing in Valkenburg is waiting on you and no guide is standing anywhere.
Is it suitable for children?
From roughly age eight it works well. The puzzles are built to be solved, not to defeat anyone, and younger children happily walk along and help.
What happens if it rains?
Rain is an interruption, not a problem: you choose the moment to start and you can stop as long as you like. Plenty of groups split the case over a morning and an afternoon.
Is this a detective game or a walking tour of Valkenburg?
Both, in practice. You cover Valkenburg on foot and you notice far more than you would on a normal walk, because the case gives you a reason to look closely at things you would otherwise pass.
What else is there to do in Valkenburg?
You can play more than one: other city games in Valkenburg use the same streets for another case, and the rest of the Netherlands is one list away.
Also in the city: Secrets of Valkenburg · The Valkenburg Syndicate · city games across the Netherlands
How it works
- BookYour ticket arrives by email.
- Go to the startThe start point is in your email. Any day within 12 months.
- PlayOpen the link on one phone per team and press start.
What players in other cities say
- ★★★★★
Wir (Mein Mann, unsere 9-jährige Tochter und ich) haben heute ganz spontan das Spiel "Moordmysterie Düsseldorf" gebucht und gespielt. Die Buchung verlief schnell und reibungslos. Es hat super viel Spaß gemacht! Die Story, die Rätsel, das Konzept, die Route, die Gestaltung der App... richtig gut!!! Das Spiel würde ich vor allem Familien mit Kindern empfehlen. Für Erwachsene waren die Rätsel (meiner Meinung nach) zu einfach. Aber trotzdem wegen der schönen Route durch Düsseldorf, der Story, den lustigen Anweisungen zwischendurch eine schöne Aktion, die man zusammen machen kann.
Lingling Z.October 2026 · via google - ★★★★★
Had great fun playing secrets of Haarlem!
Martin M.March 2026 · via google - ★★★★★
Game in Amsterdam was fun!
Enzo L.March 2026 · via google - ★★★★★
Had So much fun playing while exploring the city
Philip C.March 2026 · via google - ★★★★★
I had a fantastic experience with CityGame! The concept is creative, engaging, and a great way to explore a city in a completely new way. The games are well-designed, combining puzzles, storytelling, and adventure so you’re constantly discovering something interesting around every corner. What I especially love is how CityGame turns a normal walk through the city into an interactive experience. It’s perfect for friends, families, or team outings, and it makes sightseeing much more exciting than the usual tours. Everything was easy to use, the challenges were fun and clever, and it really encouraged us to look closer at the city and its hidden details. Highly recommended if you’re looking for a unique and memorable way to explore!
Jessica S.March 2026 · via google - ★★★★★
This is an interesting way to conduct a self-guided Amsterdam city tour. It used the GPS on your phone to guide you to stops on a route. There are mini quizzes once you arrive at the stops on the path. The quizzes draw your attention to features in front of you or to a brief history of the place. In many cases, we visited a spot that would not have been obvious as a regular passer by. The tour as a whole was interesting to us as newcomers, but I would have liked more information on many locations we visited - a few links outside of the app for each place would have been helpful. Beyond that, the interface was a bit clunky and sometimes awkward to navigate. We definitely don't regret trying this out and feel like we got our money's worth on the experience.
JaibhijaiJune 2024 · via google
How we check reviews
These reviews were left by players on Google and other review sites and are copied from there as they are, with their source.
Leaderboard
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No team has played in this period yet.
Leaderboard: Valkenburg
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No team has played in this period yet.
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