A Different Way to Explore Amsterdam:
Self-Guided City Game for Friends & Families
(12+ years)
±90 Minutes
English
Stop the Atlantis Protocol Before It's Too Late
The Mystery Below
Centuries ago, Amsterdam was built on wooden poles to stay above water. But deep in its foundations lies something few people know about: a hidden mechanism designed to flood the city in case of invasion.
That mechanism, known only as the Atlantis Protocol, has been activated.
Disturbances spread through Amsterdam’s canals. The water rises slowly. Your team may be the only chance to keep Amsterdam afloat.
Prepare Your Team for an Exciting
City Game in Amsterdam
Explore the historic center, follow cryptic clues, and unravel the mystery hidden beneath the canals. This 90-minute outdoor adventure is perfect for curious minds, brave hearts, and fast thinkers; before time runs out.
Solve Puzzles & Follow Clues Through Historic Amsterdam
Everyone in your team can play an active role in this city game: solving puzzles, following clues, or just enjoying the adventure through Amsterdam’s streets at their own pace.
- 2-5 Players (12+) per team
- ±90 Minute adventure
- WhatsApp needed
- Play at your own pace
- In English 🇬🇧
How this Amsterdam City Game Adventure 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 (12+ years) work together to decipher codes and uncover hidden messages.
The Investigation
Follow the self-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.
The Final Countdown
As you piece together the full story of this city game, you'll race against time to stop the Atlantis Protocol and save Amsterdam from impending disaster. Will your team succeed in the final challenge?
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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.
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 12 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. But if the weather is extreme, you can reschedule.
- Atlantis Protocol is fully reschedulable at any time with no extra cost. Just visit our  rescheduling page to change your booking.
- 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 purchases are non-refundable. You can reschedule any time, free of charge, up until the start of your game, via our dedicated transfer page: https://www.sherlocked.nl/city-games/atlantis-protocol-reschedule-your-booking
Can I reschedule a city game any time?
Yes! Atlantis Protocol is fully reschedulable at any time and at no extra cost. Simply head to our rescheduling page to update your booking.
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.
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