Tetris Extreme (Red7/SG Digital): Overview In mother Russia they have a song, an old folk song that dates back to the nineteenth century which tells the tale of a peddler and a girl haggling over goods. Beneath the seeming banalities of the encounter lie deep metaphors of courtship. The Russian people call this song Korobeiniki; พีจีสล็อต to everyone else in the world it is known as 'the Tetris Song'. It appeared in numerous incarnations of the game, notable the N-Blox version, and now it plays a starring role in Tetris Extreme from SG Digital partners Red7. Tetris has been bought physically or downloaded over 170 million times since it was released in 1984. This makes it the most popular game of all time, and kind of amazing that it has taken this long to reach slot form. It’s a bold move, taking the most popular video game of all time and converting it to a slot, is Red7 up to the task? Let’s find out.