Duology

A duology is a set of two works of art that are connected, and that can be seen either as a single work or as two individual works. They are commonly found in literature, film, and video games, and are less common in other art forms. Two-part works that are considered components of a larger work also exist, but they are not commonly referred to with the term "duology".

Most duologies are works of fiction involving the same characters or setting. Others can be connected only by theme or in less obvious ways.

Film

 * Ant-Man // Ant-Man and the Wasp
 * Blade Runner // Blade Runner 2049
 * Creed // Creed II
 * Finding Nemo // Finding Dory
 * Frozen // Frozen II
 * The Incredibles // Incredibles 2
 * It / It Chapter Two
 * Kill Bill: Volume 1 // Kill Bill: Volume 2
 * Monsters, Inc. // Monsters University
 * National Treasure // National Treasure: Book of Secrets
 * Paddington // Paddington 2
 * Sherlock Holmes // Sherlock Holmes: A Game of Shadows
 * Top Gun // Top Gun: Maverick
 * Twitches // Twitches Too
 * Wreck-It Ralph // Ralph Breaks the Internet
 * Zombieland // Zombieland: Double Tap
 * 21 Jump Street // 22 Jump Street

Literature

 * Jurassic Park // The Lost World
 * The Selfish Gene // The Extended Phenotype

Videogames

 * Banjo-Kazooie // Banjo-Tooie
 * The Last of Us // The Last of Us Part II
 * Medievil // Medievil 2
 * Ori and the Blind Forest // Ori and the Will of the Wisps
 * Portal // Portal 2
 * Red Dead Redemption // Red Dead Redemption 2