​In the Barbie Merge Mystery game, join Barbie,Teresa and Renee as they investigate the cause of a mysterious pink fog that disrupts their slumber party—erasing memories, altering familiar places and leaving them with unanswered questions. In this free-to-download mobile app (Android or iOS, not included), solve puzzles by merging items to complete orders, collect resources and restore buildings in the dreamy world of Barbie!