XCOM: Enemy Unknown Patch 12 October 2012

The update will be applied automatically when your Steam client is restarted
2K Games has issued a patch for XCOM: Enemy Unknown, the action strategy title developed by Firaxis Games and now available for PC, Xbox 360 and PS3. Among other things, it includes various visibility/hiding optimizations and replaces software cursor with the operating system cursor to reduce lag and framerate dependence.