Overview
The Age of Empires II: The Age of Kings Update 2.0a features many updates and fixes, including:

    * The AI Update.

    * Town Center changes.

    * Improved performance of single player campaign games.

    * Improved overall stability.

    * You can no longer use a fishing ship to build buildings other than a fish trap.

    * The cooperative farming bug has been fixed.

    * A number of computer player and scenario editor bugs have also been fixed.