Video games utilize graphics engines for rendering by processing 3D models and applying textures, lighting, and shading to create immersive visual experiences. These engines handle the heavy computational tasks involved in rendering graphics in real-time, allowing for dynamic environments and realistic animations. By leveraging advanced techniques such as ray tracing and particle systems, graphics engines enhance the visual fidelity of games, making them more engaging. Additionally, they support physics simulations and various rendering techniques to produce high-quality graphics across diverse gaming platforms.