Chapter 1

Chapter 1 can refer to:
 * World 1 of Super Mario Bros. 2, originally referred to as Chapter 1 in Yume Kōjō: Doki Doki Panic.
 * Storming the Koopa Bros. Fortress, the first chapter of Paper Mario.
 * Castle and Dragon, the first chapter of Paper Mario: The Thousand-Year Door.
 * Chapter 1 of Super Paper Mario, which takes place in Lineland.