In Mac OS X, you need to press Fn+F1 to activate F1.

Same for F2 to F12.

For some games, F1-F12 are part for the shortcut keys actively being used.

Let’s make F1-F12 as default without the need to use the “Fn” key.

Steps:

  1. Open System Preference
  2. Open Keyboard
  3. Tick the checkbox– Use all F1,F1, etc as standard function keys

    Enjoy!!