A star is a reward that you can get in Bad Piggies. Unlike in the other Angry Birds Games, you complete certain objectives to get a star, instead of getting a high enough score to get one. Collecting a certain number of stars will open a special level in the row of four levels. Also, getting a star will reward you with a snout coin and a number of XP.
Getting stars in the game means completing certain objectives. Here is the list of objectives in the game so far. Playing in offline will result a green star.
|Get the Pig to the target destination|
|Get the Pig to the target destination without damaging your vehicle|
|Get the Pig to a certain destination while aquiring the Star Box.|
|Get the Pig to a certain destination in a certain amount|
|Transport The Pig and the King Pig to a certain destination TOGETHER|
|Get the Pig to a certain destination with your contraption not containing a certain vehicle part.|
|Transport the Pig and the Egg to a certain destination TOGETHER.(Flight in the night Exclusive)|
|Transport the Pig and the Pumpkin with candy to a certain destination TOGETHER (Tusk til' Dawn Exclusive)|