Windows 8 does a good job in managing apps. When you switch to another app, the current app will go into hibernation and the system will release it to free up memory resource if another running app requires more resource. However, if you are determined to close the app, here is how you can do so:

  1. In the app, move your cursor to the top of the screen and wait until it turns into a hand.
  2. Now, left click the mouse and drag the app down. The app will turn into a small thumbnail. Move it down to the bottom of the screen and release the mouse. The app will close and return you to the Start menu.

Alternatively, you can use the shortcut key “Alt + F4” to close the app.