Paper Mario: The Thousand-Year Door

Paper Mario: The Thousand-Year Door (ペーパーマリオRPG, Pēpā Mario Āpījī, translated as Paper Mario RPG) is a role-playing video game developed by Intelligent Systems and published by Nintendo for the Nintendo GameCube in 2004. It is the fourth game in the Mario RPG series, second in the Paper Mario series. It is the successor of Paper Mario and uses the same gameplay and visual style but with improved visuals, and is also the predecessor of the Wii game; Super Paper Mario. It frequently plays on the "paper" aspect of the universe and its characters, in a sort of fourth-wall breach.

List of Characters
see List of characters in Paper Mario: The Thousand-Year Door

Trivia

 * A kid koopa is seen discussing various video games. He claims he loves Paper Mario, Paper Mario: the Thousand Year Door (and even claims it has a good ending), and Fire Emblem. He even claims at the end that there is an upcoming game called Super Paper Mario.
 * One Bowser scene is based on Super Mario Bros. level 2-1.
 * Mario receives email on a Game Boy Advance SP
 * The music that plays when Mario receives an email from X is from the Ice World in Super Mario Bros. 3
 * The music that plays when Mario receives an email from anyone else is the opening to Super Mario World
 * When fighting Rawk Hawk, one person calls Mario "Jumpman", his name in Donkey Kong
 * There are two instances where the characters are seen talking to the player.
 * This is one of the few instances where Yoshi actually speaks.