A game engine is a software framework designed to facilitate the development of video games. It provides essential tools and features, such as graphics rendering, physics simulation, and sound management, allowing developers to create interactive experiences more efficiently. Popular game engines include Unity and Unreal Engine, which are widely used in the gaming industry. Game engines often come with built-in libraries and assets, enabling developers to focus on gameplay and storytelling rather than starting from scratch. They support various platforms, including PC, consoles, and mobile devices, making it easier to reach a broader audience with a single game project.