Thwart a Harry Potter curse in Colmar! Track 9 ¾ is no longer accessible! The access by the King's Cross station has been condemned... You must now go to the Alsatian Venice to board the Hogwarts Express... Your mission: counter this enchantment and find the access to the platform! Go to the greenish square of the Green Mountain. But beware: the train will pass in 2 hours! Guided by your smartphone, you will go in search of each house. The objective of this quest is to collect 4 code words per house within the time limit. They will allow you to find the location of the track. At each house visited, you will get key clues to link to find THE code word that will validate each passage. You'll solve puzzles, meet wizards, and find bonus cauldrons. The Hogwarts Express will leave in 120 minutes. Tick tock tock... This game is accessible to all and multigenerational. You have the possibility to play in team, for that only one person of each team will have to enter the identifier and the unique code on his device. Then you can start the game simultaneously. You will be able to compare your points and the time obtained at the end of the game. Please note: this activity is an outdoor escape game where the plot is not directly related to the city (although it is held in attractive places in the city center). It is a game on a given theme and not a guided tour of the city.