Collect three similar colored balls in a row to make them disappear and to make Xnake smaller. Colored balls appear randomly on the field and you can see the next set of of balls at the top right corner of the game screen. If you eat the flashy ball it will turn into the color of the previous block eaten. Rotating arrow will affect your controls. Avoid skulls! Xnake will die if you eat those. Collecting the numbered blocks will reduce Xnake's length by the indicated number.