In some games I like to use the F keys: F1, F2, etc. But when I press them it just brightens the screen, how do I disable the screen brighten part and just use the F key for a keybind?
The Bluetooth keyboard is, as far as I know, the only Mac desktop keyboard that has the brightness and function keys overlaid, and that has a function key too.
You can change this behaviour by going into the Keyboard & Mouse preference pane and checking "Use all F1, F2, etc. keys as standard function keys".