Indie game development refers to the process of creating video games by individuals or small teams without the financial support of large publishers. These developers often focus on innovative gameplay, unique art styles, and personal storytelling, allowing for creative freedom and experimentation. Many indie games are distributed through digital platforms like Steam or itch.io, making it easier for developers to reach audiences. Successful indie titles, such as Undertale and Hollow Knight, have gained popularity and critical acclaim, showcasing the potential of independent creators in the gaming industry.