A mobile game is a video game that is typically played on a mobile phone.[1] The term also refers to all games that are played on any portable device, including from mobile phone (feature phone or smartphone), tablet, PDA to handheld game console, portable media player or graphing calculator, with and without network availability.[1] The earliest known game on a mobile phone was a Tetris variant on the Hagenuk MT-2000 device from 1994.[2][3][4]