Tetrix, by FMD Software, is a Tetris-like game with excellent graphics and sound.  
The object of the game is to create horizontal lines before you get to the top of the screen and bust.  You can rotate the pieces to make them fit.  You can have multiple horizontal lines too.  You get points for the number of lines you complete. You must do 10 horizontal lines before upgrading to next level, and the goal of the game is to reach the end of the 10th level.  You'll spend hours trying to work your way to progressively higher levels.  
Fun for the whole family and challenging too!