Magic Mouse and Trackpad gestures interfere with the game. How do I disable them?
Finger "gestures", which are used by Magic Mice and Trackpads to switch between windows and applications, can disrupt your game if used inadvertently. To disable them, follow these instructions:
Open System Preferences ( Menu → System Preferences).
Click on Mouse or Trackpad (depending on which you are using).
Select the More Gestures tab.
Uncheck all the checkboxes.
NOTE: The secondary click function must be enabled on your Magic Mouse or Trackpad in order to perform some of the functions that are required in game. To do this, make sure the Secondary Click checkbox in the Point & Click tab of either the Trackpad or Magic Mouse menu is checked.