Concept art is a form of drawing used to represent initial ideas for various mediums such as movies, comics, and video games. Concept art provides a basis for the media and gives an initial idea that can be reworked and refined. Concept art for games has changed significantly over the years due to advances in technology. Earlier games had more limited, 2D concept art that lacked detail, while modern games have more complex engines allowing for highly detailed 3D concept art incorporating features like lighting and character modeling. Overall, concept art is a vital early step in game development, allowing designers to visualize and improve graphical elements before full game creation.