the player performs well, the audience's cheers will replenish Star Power. If the player performs spectacularly, they may throw items to the player, such as a mushroom. Conversely, the audience may throw damage-causing items at the player or leave if the player performs poorly in a battle, such as rocks. The audience starts with a maximum size of 50 and can grow up to 200 as the player levels up during the game. Plot The Thousand-Year Door is set in the Mushroom Kingdom. The town of Rogueport serves as the hub world, connecting to all other locations in the game. The story is divided into eight chapters and a prologue, each of which primarily takes place in one of the unique areas. Each of the major locations are designed around a specific theme; Glitzville, for example, is a floating city known for its fighting arena. The enemies and town inhabitants in the game range from recurring Mario characters, like Boo, to characters exclusive to the game, such as the X-Nauts. Characters The Thousand-Year Door contains several characters, the majority of whom are not playable. Progression in the game is sometimes dependent on interaction with non-player characters, although many are used in the game's various minor sidequests. In particular, the Goomba Professor Frankly, who knows the most about the mysteries relating to Rogueport, must be visited every time Mario retrieves a Crystal Star. The game continues the tradition of Paper Mario, in which Mario can be accompanied by one assistant character at a set time. There are seven party members in total: Goombella the Goomba, Koops the Koopa, Madame Flurrie the wind spirit, a Yoshi who is named by the player, a shadow being named Vivian, Admiral Bobbery the Bob-omb, and the optional Ms. Mowz the Squeek. Mario is the main character of The Thousand-Year Door, although the story also rotates between portions where the player plays briefly as Princess Peach and Bowser. Most of Peach's story is spent on her interaction with the X-Nauts' computer AI TEC, who falls in love with Princess Peach despite not fully understanding the concept of love. Princess Peach agrees to teach TEC about love in exchange for the ability to contact Mario via e-mail. The series antagonist Bowser tries to collect the Crystal Stars before Mario does, instead of directly opposing Mario, though his attempts mostly become comedic relief. Story The game opens with