While the exact contents can vary depending on the version, a standard mod archive like this generally includes:

: Internal logic that governs NPC schedules, dialogue trees, and the "family" system.

: Replacing standard "testificate" villagers with detailed characters.

: .json or .toml files that allow you to customize mod settings, such as spawn rates or interaction types.

: Engaging in marriage, having children, and managing a village "family."