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A mysterious old map of the fortress builder Adriaan Antonisz points to a secret underground gunpowder storage from the 16th century.
A Mondrian maniac has placed bombs in the city center of Amersfoort. He wants to flood the city. “Rather blue than green,” is what he says.
An important painting by Rembrandt van Rijn has been stolen! The answers to the riddles will show you who did this.
Mr. Vily’s cutting-edge robot dog has run away. Hopefully he won’t do anything crazy. Why is he sending these puzzling messages?
Joshua, an officer at the Royal Military Academy in Breda, has been kidnapped! Scary voice messages lead you through the city…
Christina’s girlfriend, an art dealer in Delft Blue, has disappeared! Kidnapped, run away, an accident?!
Since last week, The Jheronimus Bosch Art Center has been exhibiting the painting the Garden of Earthly Delights. But it turns out to be a counterfeit!
The political assassination of the ‘de Witt brothers’ in 1672 is one of the most memorable attacks in the history of the Netherlands. The part of the Stadtholder, ancestor of the current king, in this murder has always remained unclear, until now…
Mr. Vily’s cutting-edge robot dog has run away. Hopefully he won’t do anything crazy. Why is he sending these puzzling messages?
Someone has stolen an important painting from the Groninger Museum and replaced it with a cartoon drawing of the painting. Is this a joke? Or is there more to it…
Kenau, the great heroine of Haarlem. In the 16th century she fought against the Spaniards in the Eighty Years’ War. But is it actually true?
Secret codes seem to be hidden in the street art all over the city. While you try to solve the riddles you discover that not everything is as it seemed…
A police officer has taken a secret file that should never have left the police station. Can you find and return the file?
Footprints of goat’s feet have been found. Have the infamous Buck Riders returned…?
An enormous tidal wave is coming over the river in the direction of Nijmegen. The emergency system seems out of order and all barriers must be activated. Will you be able to warn everyone in time?
Art thieves threaten to steal the statues and other works of art in Rotterdam. The municipality has equipped the statues with a chip that all urgently need to be updated.
The Constitution of the Netherlands has mysteriously disappeared. Now you know what goes wrong without our fundamental rights. The Constitution must be restored as soon as possible!
One of your students is in big trouble! He seems to be involved in drug dealing. But suddenly he disappeared, and his classmates received puzzling messages. You decide to visit the secret spots of the city to look for him.
A police officer has taken a secret file that should never have left the police station. Can you find and return the file?
Mira Zocher, the great-granddaughter of the designer of the Zocher Park in the city center, has found a mysterious book. It turns out to be a warning…
