There are a lot of games without joystick control support and the only way you can play them is using the keyboard.
"Any game control" is able to associate the joystick buttons with keyboard keys. That means you can use your joystick as controller for any game that can be played using the keyboard (even flash or any other browser games).
The program allows saving the keys association for every game you have in order to easily switch between them later.
*It uses DirectX to detect the joystick, so if you don't have it installed in your sistem or you're having problems running the program, you should install DirectX from here.