Probably the only good thing to come out of Russia, Tetris was made famous during the heydays of Game Boy and became the highest selling game ever, mainly because it was included with the Game Boy
Although not very colorful in graphics, Tetris was one of those games that never got old
Again, get Tetris and if you really like these types of games, pick up Dr. Mario.
I like the original Tetris much more than all the "updated" versions