I found, but his does not help, the problem actually comes from the games I thinkThere are some icon on your keyboard that looks like a mousepad or a mouse. Press the Fn button on your keyboard and press the icon on your keyboard.
Since keyboard varies... you have to find this yourself. ( If you use an external mouse, then disable that will not let you move the mouse using the mousepad but you can move using a mouse. )
Probably the mousepad make the camera move when you play.