Hard levels are levels that are not too hard to beat. They are worth 4 or 5 stars. They are signified by a yellow worried face.
Levels that are more difficult than Hard levels are the Harder levels, worth 6 or 7 stars, and easier than them are the Normal levels, worth 3 stars.
- This is the typical rating deserved for auto, easy, normal and hard levels before getting a star rating.