You are invited to discover the haunted side of Barcelona with an interactive city exploration app. You will be guided with step-by-step instructions to cursed buildings where they carry out "eternal punishments" while you learn of their stories. Brace yourself and come explore the darker side of Barcelona, all with the help of your smartphone. Each clue will lead you from one place to another, providing you with exact directions so that you won’t need a map, GPS, or guide. When you solve problems correctly, the secret story of that place is unlocked. Along the way, you’ll find horror stories that are bound to give you the chills. You will be welcome to complete the tour at your own pace as there's no time limit, although around two hours is normally enough. You will be free to pause the game at any time, and restart whenever you want from the last place you visited. If you are a large group, one person can purchase access for the entire group by selecting the number of people in the group. All group members will be able to play the city game on their smartphone. Alternatively, each person can purchase their own ticket. You can play as a group and solve the clues together as you walk, or you can split into smaller groups/teams and compete against the others. Each person can also play on their own, separate from the group, and meet the group at the end.