Hidden object game

A hidden object game, also called hidden picture or hidden object puzzle adventure (HOPA), is a puzzle video game genre in which the player must find items from a list that are hidden within a scene. Hidden object games are a popular trend in casual gaming. Time-limited trial versions of these games are usually available for download, although many are free to download on app stores. Popular themes include detective crime stories, adventure, gothic romance, and mystery. (Wikipedia)