Each event comes with a new pack of puzzles.
On the game’s main menu, you will see a star and duck icon at the bottom of the screen, under the list of packs. Tap the star icon to view the list of event packs and the duck icon to return to the main game.
During the event, play or replay any puzzles to earn stars and level up. Each time you level up, you will receive a reward, such as unlocking puzzles in the event pack.
The puzzles in the event pack can only be unlocked through these rewards while the event is active. When the event ends, you can unlock any left over puzzles using tokens.