A simulator is a digital tool designed to replicate real-world activities, environments, or systems for training, entertainment, or analytical purposes. By providing an immersive experience, simulators allow users to practice skills, test scenarios, or explore virtual worlds without real-world risks. Common types include flight simulators, driving simulators, and medical procedure simulators, each offering realistic controls and physics-based interactions. Gamified simulators also let players manage businesses, build cities, or experience life in different roles. Advanced simulations use AI, VR, or AR to enhance realism, making them valuable for professionals and hobbyists alike. Whether used for education, research, or entertainment, simulators offer a safe, cost-effective way to gain experience, improve decision-making, and enjoy interactive learning in a controlled virtual setting.