Mod

A ***mod*** is a modification or addition to a game's code, created by users not officially affiliated with the original game. Mods for visual novels might add a variety of features, such as additional stories, new characters, improvements or adjustments to content from the original game, or even performance improvements.

Some visual novels, such as Template:VNDB, are particularly popular for mod developers. Communities may form around modding particular games, where mod developers share knowledge and advice.