What are some flight simulator games?

Flight Simulator X is the newest version from Microsoft but it requires a powerful computer to run. If you have an older computer you might want to try and find a copy of Flight Simulator 2004 which is still widely used and very enjoyable. There is also the competitor to the Microsoft flight simulator series called X-Plane. I have not personally tried it but some people say it is more realistic that the Microsoft versions in terms of the flight model.