Use the left and right keys to line up your cube with cubes of the same color. Use the center key to insert a cube into a line of cubes the same color. When a line matches, it will disappear.  Clear as many cubes as possible.                                                                           
[Item]  In Item Mode, the objective is to clear more blocks than your opponent before the time runs out. If you clear a line of cubes the same color as the cube in the item in the window on the left side of the screen, your opponent will be temporarily stunned.   [Speed]   In Speed Mode the goal is to clear blocks as fast as possible. As you clear blocks, your score will decrease. There is no time limit in Speed Mode; the game ends when one of the players reaches a score of 0.  [Puzzle]  In Puzzle Mode, you must remove all cubes within a limited number of turns. The number of turns is listed on the right hand side. You can play  40 different levels in Puzzle Mode.