Discover the most beautiful cities in the Netherlands, Belgium and Germany with your own smartphone. Download the app for free from the Google Play Store or from the App Store and play the game of your choice in the city of your choice. Once you’ve chosen a game, you see a map of the city on which you weigh your feet. This is how you pass the many highlight of the city. The App is Coronaproof, you can decide with how many people you play the game. How does it work exactly?