Match rows of three to eliminate skulls from the playing field. Try to match rows of four to get a Skull Bomb. A Skull Bomb can destroy all skulls touching it when it lands. Match five to get a Mega Skull Bomb. A Mega Skull Bomb will destroy all skulls near the bomb when it lands. Get an Ultra Skull Bomb by matching two rows of five. An Ultra Skull Bomb will destroy skulls within a large radius of the bomb when it lands. As you progress, the background will change, and the curtains on either side of the play area will constrict, allowing you less space in which to set up combos. Also, new skulls will be introduced every few levels. Move left and right with the left and right arrow keys. Press the down arrow key to drop your piece. Press the up arrow key to rotate your pieces from bottom to top.