User-created levels refer to game stages or environments designed by players rather than the original developers. Many video games, especially in genres like platformers and puzzle games, allow users to build and share their own levels using in-game tools. This feature enhances creativity and engagement, as players can express their ideas and challenge others. These levels can vary widely in complexity and style, often reflecting the unique preferences of the creators. Platforms like Super Mario Maker and LittleBigPlanet have popularized this concept, enabling communities to collaborate and enjoy a diverse range of user-generated content.