Video game clone grouped as "Myst clones". Some video game genres are founded by archetypal games of which all subsequent similar games are considered derivatives; notably, early first-person shooters were often called ""Doom" clones", while the success of the open-world formula in "Grand Theft Auto" led to the genre of GTA clones. The genre of endless runners is based on the success and simplicity of the game "Canabalt". In these cases, games that are "clones" of another are generally not implied to have committed any intellectual property infractions, and otherwise considered legally acceptable practices, although calling such games clones is generally considered derogatory.
Emergency (video game series) series which was developed by Quadriga Games, published by Deep Silver. This second expansion pack for "Emergency 2012" focusing on meteor disasters. Similar to "Emergency 2013" It features 4 new campaign missions, a new larger freeplay map, and 3 new units. "Emergency 2014" was released 15 November 2013. Emergency (video game series) Emergency is a series of rescue simulation video games by German developer Sixteen Tons Entertainment and creative director and founder of the series Ralph Stock. The first game in the series, , was published by TopWare Interactive in 1998. Emergency 2 was published by Take 2 Interactive in