stickers that are found and peeled off from various areas in the environment. Additionally, the player can purchase stickers using coins or receive them from non-playable characters (NPC). The player has limited inventory space, with larger stickers taking up more room. Stickers are used both in combat and for interacting with the environment. The player can enter a state called "Paperization", which will lay the screen down flat to reveal additional secrets not visible regularly. Real-world objects can be found, known in-game as "Things", such as baseball bats and scissors, that can be turned into special types of stickers called "Thing Stickers", which are often needed to solve puzzles in the overworld. For example, a Fan Thing Sticker can be placed in strategic areas in the environment and, when activated, creates wind that moves or destroys obstacles. The turn-based battles in Sticker Star also reiterates combat in previous games, and are initiated when Mario comes into contact with enemies in the overworld. The player's available attacks are determined by the stickers on hand from their inventory. For example, possession of the Jump sticker can be used to attack an enemy by jumping on it. Certain kinds of attacks are required depending on the enemy being fought; an enemy wearing a spiked helmet cannot be jumped on and must instead be attacked using a different kind of sticker, like a hammer. Thing Stickers are used to inflict more damage on enemies, and certain types of Thing Stickers are required to make boss battles easier. Each sticker is removed from play after one use, making it necessary for the player to consistently collect new stickers. The player increases their maximum health points (HP) and other stats through collection of HP-Up hearts, which give Mario five more health points and stronger attacks. Plot Every year, the Sticker Comet lands in the Mushroom Kingdom, and those who wish on it have a good chance of their wish being granted by the Royal Stickers that reside within the comet. Mario attends the Sticker Fest, a festival held in the city of Decalburg to celebrate the Sticker Comet's arrival; where Princess Peach presents the comet on stage. There, as the Toads all prepare their wishes, Bowser interrupts the celebration and breaks the comet into six parts, the Royal Stickers, scattering them over the Kingdom, with one falling on Bowser's head; Mario tries to stop him, but