Game genres are categories that define the style and gameplay mechanics of video games. They help players understand what to expect from a game, whether it's an Action game filled with fast-paced combat or a Role-Playing Game that emphasizes storytelling and character development. Each genre can have various subgenres, allowing for a diverse range of experiences. For instance, within the Action genre, you might find Platformers that focus on jumping and navigating obstacles. Understanding game genres enhances the gaming experience by guiding players to titles that match their preferences.