Fanwork

Fanworks are pieces of media related to a visual novel (or other media), which are neither created nor commissioned by the creator of the original media. Common types of fanwork include mods, fanart, Let's Plays or Let's Reads, and fan translations.

Cracks

Crack patches (often just cracks) are a form of software piracy patch intended to circumvent built in license requirements or other rights security, such as a disc/hard media requirement or DRM (Digital Rights Management) implementations.