Everyone would be familiar with Tetris. It is available for nearly every video game console and computer operating system, as well as on devices such as graphing calculators, mobile phones, portable media players, PDAs, Network music players and even as an Easter egg on non-media products like oscilloscopes. I still remember the situation when I played that game – tensely moved and rotated each block, and then waited for the disappearance of the line. What a sweet memory! Today, Tetris can be seen everywhere, come with me and find out where it is.