From the back of the case "Get in Line! Prepare for brain-busting puzzles and fast-twitch action as you draw lines to flip black and white tiles and make patterns and puzzles disappear! Challenge As patterns relentlessly fall from the top screen, draw lines to reverse their polarity and make them disappear. The more you clear, the faster they come... Puzzles Solve 100 puzzles by drawing a single line, or design your own and trade them via wireless link! Versus Link up wirelessly! Clear lines and use power-ups to fill your foe's screen with chaos."