What are they?
Objectives are small tasks that provide challenges for players in exchange for handsome rewards. Objectives start out small and simple ("Win a Bingo", "Invite a friend"), but as you complete more and more they will become challenging ("Score 2/3/4 Bingos in a single round").
There are also room-specific objectives that are usually tied to collectibles available in that room (ex. "Find the Prince" in the Rapunzel Room).
You can check the list of your current objectives and see which ones you have already completed by pressing the Objectives button at the bottom of the screen.
Hint: Click on the pictures to view them in a larger size!