Secrets of · Scavenger hunt
Secrets of Basel Self-Guided Scavenger Hunt & Walking Tour
1.5–2 hours · 1–4 players per team · no appfrom €4.99 per person1 player €8.95 · 4 players €19.95
Detective Murder Mystery GameDetective Murder Mystery Game Basel
- 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
Play a detective murder case on foot through central Basel, from the Martinskirche past the Münster terrace to Barfüsserplatz.
On the route
14 places, in this order
- Rhine GateMittlere Rheinbrücke, 4089 Basel
- Walls of BaselEisengasse 7, 4051 Basel
- Basel Town HallMartinsgässlein, 4001 Basel
- MarktplatzMarktplatz, 4001 Basel
- Natural History Museum of BaselAugustinergasse 2, 4051 Basel
- MünsterplatzMünsterplatz 15, 4051 Basel
- Basel MinsterMünsterplatz 9, 4051 Basel
- Basel Historical MuseumFasnachtsgasse, 4001 Basel
- Kunsthalle BaselSteinenberg 6, 4051 Basel
- ElisabethenkircheElisabethenstrasse, 4010 Basel
- AeschenschwibbogenFreie Strasse, 4010 Basel
- Dollhouse MuseumSteinenberg 29, 4051 Basel
- BarfüsserplatzKohlenberg, 4001 Basel
- Basel Historical Museum – MusikmuseumIm Lohnhof, 4001 Basel
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
The Balthasar case is open in Basel, and it stays open until somebody walks the route and reads it properly.
Think of it as a detective game the size of a city. The murder mystery runs on your phone while Basel supplies the evidence: witnesses to question, codes to crack, photographs to take, and one name to hand in when you are sure. Nobody guides you and nothing starts at a fixed hour.
The investigation puts Martinskirche, Rathaus Basel and Basler Münster on your list.
The Walk Through Basel
Pfalz and Kunstmuseum Basel come into it too. Expect 3 to 4 km on foot, at whatever speed suits the slowest member of the group.
Had great fun playing secrets of Haarlem!
How Your Case in Basel Plays Out
The story arrives as you move. Every location holds something to work out, and the digital characters you meet each know one piece of what happened to Balthasar. Reckon on 1.5 to 2 hours and 3 to 4 km, but there is no clock: break for lunch and pick it up afterwards. The reasoning runs the way it does in a Sherlock Holmes story: small observations first, the accusation last.
Who Plays This in Basel
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. Buy a ticket per four, put every team on the same murder, compare the answers over lunch. Nothing to hire and nobody to brief, so a company outing in Basel survives people turning up late.
With kids. Eight years old is about the floor. The distance is not the problem it sounds like, the photo tasks are where children beat adults outright, and the codes end up being solved by the whole family at once.
Frequently Asked Questions
How does the murder mystery game work?
Everything opens from the play link in your email. Start it wherever you like in Basel, follow what the case tells you, solve what each location puts in front of you, and hand in a name when you are sure.
How long does it take?
Set aside an afternoon. The case itself takes 1.5 to 2 hours across 3 to 4 km, but nothing counts down and nothing shuts, so the breaks are free.
How many people can play on one ticket?
One €19.95 ticket covers four players on a single phone. Past four, take a second ticket: two teams chasing the same killer beats six people squinting at one screen.
Do we need to book a time?
A date is all we need. The starting time is yours, because there is no host, no departure and nobody else's schedule involved.
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?
You decide when to play and you can pause whenever you want. Step inside, wait the shower out and pick the case up again - no clock is running and nothing closes.
Is this a detective game or a walking tour of Basel?
You get the walk either way. The difference is that you arrive at each place with a question, and a question makes people look at a building far harder than a plaque ever does.
What else is there to do in Basel?
The same streets carry other city games in Basel, each with its own story, and anyone travelling on will find the next stop under Switzerland.
Keep going: Secrets of Basel · Geneva Murder Mystery · city games across Switzerland
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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Leaderboard: Basel
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