This is the type of puzzle game that you pull out when you have fifteen minutes or so of time to waste.
The gameplay of busting up (not-to rapidly) moving lines of colored balls goes from two or three sets to a sometimes overwhelming four or five and some of the levels are a bit complex, especially the one where the balls come from both sides of the screen. The various powerups add a nice touch as does the ability to switch the ball color (one of two: color "A" or color "B"). As mentioned above, some of the levels tend to get a bit complex. On the subject of levels: the playing fields do tend to repeat so you'll find yourself playing the same map on several levels, usually at a faster rate and with more balls to eliminate. This is fine on a map that you like, but if it's one you hate then obviously you're going to cry and swear a lot!
Overall, a bit of mindless fun and a nice way to spend a few minutes. Lumines and Lumines II are much better and (more addictive) games in the puzzle category, but Luxor is not a bad buy for the price.