Moon struck will prevent candies matching the left side of the moon scale from spawning. If green, red, or purple appears on the left side, 11 additional candies have to be collected in addition to the 3 candies the player has to collect four moves after the moon struck.
Note that the moon struck prevents the colour on the left side of the moon scale from spawning. This can make the orders more difficult to fulfil. In Mobile versions, reset until the colour on the left of the moon scale is not the required colour.