List the top five flight simulators. Try to include at least one paid and unpaid simulator.
Here are the top five flight simulators:

    Microsoft Flight Simulator (Paid) - A highly realistic and popular flight simulator, offering a vast and detailed virtual world to explore.

    X-Plane 11 (Paid) - Another highly realistic and advanced flight simulator, known for its accurate flight models and diverse range of aircraft.

    Prepar3D (Paid) - A professional-level flight simulator used by many organizations for training and simulation purposes.

    FlightGear (Free and open source) - A free and open-source flight simulator with a large and active community of developers and users.

    Aerofly FS 2 (Paid) - A high-quality flight simulator with a focus on providing a realistic and immersive flight experience, with a range of aircraft and detailed environments.

Note: These are some of the most popular flight simulators, but there are many others available, both paid and free, with varying levels of realism and features.