The number of stars on a Puzzle Piece represents its rarity. The more stars a piece has, the lower the probability that you can get it from Puzzle Packs.
The number of stars on a Puzzle Pack represents its rarity. You can get Puzzle Pieces with the corresponding or higher rarity from Puzzle Packs with different star ratings. The more stars a pack has, the higher the probability that you can get rare Puzzle Pieces from this pack.

5-Star Puzzle Pieces can only be obtained from Puzzle Packs of 2-Star rank and above.

Please refer to the in-game display for the specific drop rates of different Puzzle Pieces.