Tower Toppler has an unlimited lives feature....Unlimited lives - Using the LEFT DIFFICULTY switch, move to the tower which is right before the tower you want to start playing, and then move the switch to the right. Kill off all your lives. As soon as you’ve lost your last life, but before the "Game Over" sign displays, move the switch to the left (you have to be fast and time it just right). You will cycle to the next highest tower and will be granted an infinite number of lives. Move the switch to the right and begin playing.