Diary Girl is an interactive organizer and communications package designed for teenage users of the Nintendo DS. Falling within the simulation genre, it provides a personal diary, contact book, calendar, and functionality for secure friends-only messaging and voice chat. Users can customize their diary with stickers and different themes to reflect their personal style. It leverages the DS touchscreen and stylus for easy navigation and input, allowing players to manage their schedules, keep secrets, and stay connected with friends in a fun, private, and engaging way.