Criminal Case (commonly abbreviated as "CC") is a detective-themed hidden object game released on November 15, 2012 for Facebook. An iOS version was released worldwide on August 28, 2014, followed by an Android version on April 15, 2015. Developed and published by French indie studio Pretty Simple, Criminal Case has over ten million average monthly users. On December 9, 2013, Criminal Case was crowned the Facebook Game of the Year 2013.
In Criminal Case, the player acts as a detective to solve murders, locating relevant clues at crime scenes by clicking items in the scene. Rapid clue location is rewarded with greater scores; the player earns stars that can later be used as a type of currency for performing necessary tasks such as examining evidence and interrogating suspects. At the conclusion of each case, the player is presented with the suspects and must arrest the one who fulfills all the criteria gained throughout the investigation. If the decision is correct, the case is solved. To unlock the next case afterwards, the player is required to complete the solved case's post-indictment chapter first – though this process does not apply to the very first case in the game. There are also puzzle elements and various bonus features integrated into the game.
Other gameplay features include: customizing the player's avatar; purchasing police pets to boost up the score after a crime scene investigation; utilizing special power-ups such as boosters and snacks; and obtaining collectibles such as lucky cards and trophies. There are also various progression features integrated into the game.
The game is primarily a single-player affair, but it does involve a number of social features. Each crime scene has a leaderboard, for example, and the player may choose a "partner" from their list of "teammates" (friends who play Criminal Case and are recruited to the player's team) to join the investigation of each scene and provide hint bonuses. Teammates mainly help to accumulate a higher amount of energy points – allowing the player to progress much faster in the storyline.