DVDs and Blu-ray discs may include an alternate ending as a special feature.
Multiple endings may increase a game's replay value, encourage customization or deviate from the story in the form of easter eggs.
Multiple endings can be an integral part of many visual novels and role-playing games as these genres often emphasize customization and individuality.
Examples of role-playing games that feature multiple endings: Multiple endings are a common feature in "choice-driven" games in which decisions made by the player serve as the main gameplay loop.
Examples of choice-driven games that feature multiple endings: Some video games revolve their entire story around the concept of multiple endings and utilize them as a gameplay mechanic.