<P> Mystery Case Files (also known as MCF) is a video game series originally developed by the internal studios of Big Fish Games . New installments are currently developed by Eipix Entertainment, replacing Elephant Games who developed sequels from 2013 to 2014 . The Mystery Case Files series is known for its' Hidden Object' puzzles where, in order to progress through a game, the player must find a certain number of items hidden somewhere on a painted scene . </P> <P> Big Fish Games "estimates that 100 million people have at least sampled trial versions" of the Mystery Case Files games since the initial launch of Mystery Case Files: Huntsville . </P> <P> The latest installment in the series, The Revenant's Hunt, was released on November 21, 2017 and is the sixteenth game in the series . </P> <P> There have been sixteen titles in the Mystery Case Files series to date . After Mystery Case Files: Huntsville, successive installments have added additional features including: </P>

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