One of the primary uses of OpenIV is to create and install mods (short for modifications) for supported games. Mods are user-created content that can range from simple changes in a game's appearance, such as improved graphics or new textures, to more complex alterations like adding new characters, vehicles, or entirely new storylines. OpenIV provides users with a user-friendly interface for managing these mods, making it accessible to both experienced modders and newcomers alike.