The broomstick is looking for the lost witch, help it collect potions and avoid gems to find her. Press the green flag twice to start, use the mouse to control the height of the broom, collect potions to get one point and avoid gems to lose one health. The number on the left is your score, get a score of 20 to find the witch. The number on the right is your health, get 0 health to lose the game and not find the witch.
