X-Plane Flight Simulator is a relatively realistic flight simulator where players can get behind the controls of more than a dozen airplanes (and some helicopters), ranging from a simple private aircraft to a Boeing or even a warplane armed with missiles.
Players can participate in more than 20 missions and challenges where they'll have to carry out very different tasks. One level might include piloting a warplane and destroying an enemy aircraft, while another merely challenges you to get your flight crew to a specific destination safe and sound.
In free flight mode, you can choose from six different locations that you can customize however you want: you can choose the exact time of day when you want to fly, the weather conditions, and even the type of engine trouble you want to experience during the flight.
X-Plane Flight Simulator is an excellent flight simulator with very solid graphics and a huge number of possibilities. It's important to keep in mind that all the levels will be unlocked from the beginning, but that won't be the case with the planes: you'll just have one to start.