EXIT The Book - Diary 29 by Kosmos is an interactive puzzle book for experienced puzzle fans at a professional level. The mysterious story leads you deep into a research project where the entire team has disappeared without a trace. Only the left-behind diary with 63 challenging puzzles provides a clue. To solve the tasks, full creativity is required: writing, drawing, folding, or cutting in the book is expressly permitted. Equipped with a pen and a smartphone for online research, you face the tricky challenges alone or in a team.