Fan disk

A fan disk, also spelled fandisk, is a supplemental release associated with a pre-existing video game, visual novel, anime series, or other media franchise, primarily popular in Japan and East Asia. Unlike a direct sequel or expansion pack that continues the main storyline or introduces significant gameplay changes, a fan disk typically focuses on providing additional content for fans already familiar with the original work. This content can include:

• Side stories: These explore events that occur concurrently with the main plot, delve into the backstories of existing characters, or offer "what if" scenarios.
• Bonus content: This often consists of art galleries, behind-the-scenes material, developer commentary, interviews, or music soundtracks related to the original game or series.
• Minigames: Small, self-contained games that are often humorous or parodic and are not necessarily directly related to the main storyline.
• Character routes/endings: For visual novels and dating sims, a fan disk might add new romance options or expand upon existing character arcs, offering alternative endings.
• Expanded universe elements: Content that broadens the world and lore of the original work, deepening the understanding of its setting and inhabitants.
• Humorous or non-canonical content: Fan disks sometimes feature comedic scenarios, alternate realities, or other lighthearted content that is not considered part of the official canon.

The purpose of a fan disk is typically to reward dedicated fans with additional material, explore characters and themes in more depth, and provide a sense of closure or continuation for those who enjoyed the original work. Fan disks are often seen as a gesture of gratitude from developers to their fanbase. Their content is generally considered non-essential for understanding the main storyline of the original work.