Simulators are tools or software designed to replicate real-world processes or systems for training, analysis, or entertainment. They allow users to experience scenarios without the risks or costs associated with real-life situations. Common examples include flight simulators used by pilots and driving simulators for training drivers. These systems can range from simple video games to complex virtual environments used in professional settings. Simulators often incorporate realistic physics and user interactions, making them valuable for education and skill development. They are widely used in fields such as aviation, medicine, and military training.