A Different Way to Explore Amsterdam:
Story-Guided City Game
for Friends, Families & Dates
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The Mystery Below
Centuries ago, Amsterdam was built on wooden poles to stay above water. But beneath the city lies a hidden mechanism: the Atlantis Protocol, designed to flood Amsterdam in case of invasion.
The protocol has been activated. The canals are changing, the water is rising, and your team may be the city’s only hope.
Your mission: follow cryptic clues through Amsterdam's historic centre, decode the messages left behind, and shut down the protocol before it's too late.
Spotted in Amsterdam
Solve Puzzles & Follow Clues Through Historic Amsterdam
Your investigation takes you through the heart of the old city. Past medieval towers, along market squares that have looked roughly the same for four centuries, into corners of Amsterdam most visitors walk straight past. Each puzzle solved points you to the next location. Your team sets the pace.
What Our Adventurers Say
Every team that sets out to save Amsterdam brings something different to the game. Some race through in 75 minutes. Others stop for coffee halfway and still crack the final puzzle.
Couples, families, colleagues, first-timers and diehard Amsterdammers. See for yourself.
Scavenger Hunt meets Escape Room
Part scavenger hunt, part escape room, entirely outdoors. You follow cryptic clues through Amsterdam's historic centre, decoding messages and solving puzzles that only make sense once you're standing in the right place.
- 2-5 Players per team
- ±90 Minute adventure
- WhatsApp needed
- Play at your own pace
- In English 🇬🇧
- Cancel or Reschedule any time
- Add 5000 steps to your day
- Central starting location
How this Works
Start the City Game
Your adventure starts at the Aluminiumbrug ('Aluminium Bridge') in the city where you'll receive everything you need for this outdoor city game. Make sure your phone is turned on to receive the instructions, via WhatsApp.
Teamwork & Challenges
This Amsterdam city game challenges your team's communication, problem-solving skills, and ability to think outside the box. 2 - 5 players (10+ years) work together to decipher codes and uncover hidden messages.
The Investigation
Follow the story-guided adventure on foot through Amsterdam's historic center, solving puzzles that will lead you to hidden locations. Each solved puzzle reveals a piece of the mystery and guides you to your next destination.
Will Your Team Succeed
to Save The City of Amsterdam?
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Why Choose Our City Games in Amsterdam
A new way to explore the city while solving a mystery.
Familiar Streets, Hidden Clues
Explore Amsterdam and have fun finding clues. This experience takes you on an adventure to see the city and discover its hidden layers.
Exciting and Fun
Adventures
Each quest features a unique, historically-inspired narrative that brings Amsterdam's rich history to life in an engaging and surprising way.
Award-winning Adventure Makers
Sherlocked, makers of some of the best escape rooms in Amsterdam, created this game to combine fun, mystery, and puzzles, in a rewarding experience.
Ready to Save the City?
Book Atlantis Protocol today and experience Amsterdam in a whole new way.
Gather your team and prepare for an exciting outdoor escape room.
‍Pick a day and time that suits your team.
You’ll receive clear instructions by email.
Cancel anytime before your game starts.
Frequently Asked Questions
What is a city game?
A city game is a mix between a tour, a scavenger hunt, and an escape room. You solve puzzles and mysteries using clues hidden in the city's landmarks. It's super entertaining and a fun way to get to know Amsterdam in a new way.
How do city games work?

Atlantis Protocol: Bring a fully charged phone with WhatsApp installed and internet access. You’ll receive a printed map to help you navigate the city. As you explore, a mysterious figure will guide you remotely. Just follow the clues and explore Amsterdam step by step.
For Operation 45 and Secret Sender: You’ll be provided with a backpack full of tools, maps, and puzzles. Your goal is to explore the city, unlock clues, and solve the mystery with your team. No extra tools or skills required.
Who can play city games?
City games are perfect for friends, families, and corporate groups. Even diehard Amsterdammers will discover their city in a new way. Teams typically consist of 2-5 players, but larger groups can split into multiple teams.
Do I need special knowledge or skills to play a city game?
No! The games are designed for all skill levels. If you can read and explore, you can play our city games.
What if we need help?
Atlantis Protocol: You can get help via WhatsApp as part of the game.
Secret Sender & Operation 45: There’s a built-in hint system, and a Game Master is always on hand to assist if you’re stuck.
Are city games suitable for kids?
Yes, children can participate in our city games accompanied by their parents. The game is educational and fun, with history woven into the puzzles. The minimum age for Atlantis Protocol is 10 years old. For Operation 45 and Secret Sender, the minimum age is 9.
What happens if the weather is bad when playing a city game?
City games go on rain or shine. If you want to be able to cancel or reschedule, here's what you need to know:
- For Atlantis Protocol, we have a 100% refund guarantee - if you cancel up to your start time. You will find the link the 'manage my booking' link in your confirmation email.‍
- For Operation 45 and Secret Sender, please email to citygames@sherlocked.nl and apply for a reschedule, but please note that conditions may apply, and during weekends, support may be limited.‍
How long does a city game take?
Most city games take around 2 hours, but faster teams might finish in 90 minutes.
For Atlantis Protocol, you play at your own pace.
What is Atlantis Protocol's cancellation policy?
- Atlantis Protocol:Â Cancel any time, free of charge, up until the start of your game, via the 'manage my booking' link in your confirmation email.
Can I change a city game any time?
Yes! Atlantis Protocol Tickets are fully refundable at any time up to the start of your game. Simply open your confirmation email to cancel your booking and get a refund.
For Operation 45 and Secret Sender, please email us at citygames@sherlocked.nl to request a reschedule. Conditions may apply, and weekend support is limited, so we recommend reaching out as early as possible.