Developing video game concept art saves project resources: budget and time. If a game project contains a lot of graphics, especially 3D, which takes a lot of time to create, it is necessary to make concept art for future assets at the initial stages of development.
Visualization of the game world, even in the form of drafts, gives an understanding of the chosen style and allows you to make adjustments at the initial stages of the project plan. 2D concept art is created and adjusted faster than final 2D renders or 3D models. Therefore, in case of errors, inconsistencies or other problems, 2D drafts can be changed, redone, corrected or finalized faster.
However, the fundamental task of concept art is to build a visual style for the game. By making concept art for a game project, the development team puts together a visual puzzle and forms a vision. Therefore, it is extremely important to take care of high-quality concept art and select a qualified team with a large background that can implement this stage for future development.