The patch, version 1.00, was released on April 13, 2010, and was available for download from Ubisoft's website or through the game's launcher. The patch included the following changes and improvements:
    
        Removed the need for an internet connection to launch and play the game.
        Added support for ATI Eyefinity technology.
        Improved performance and stability.
        Fixed various issues with graphics, sound, user interface, and gameplay.
        Fixed a rare crash that occurred when skipping cinematics.
        Fixed a bug that prevented players from using the hideout's practice dummy.
        Fixed a bug that caused Ezio to freeze during certain animations.
        Fixed a bug that prevented players from looting dead enemies.
        Fixed a bug that caused Leonardo's flying machine to be unusable in certain situations.
        Fixed a bug that prevented players from replaying some memories.
        Fixed a bug that caused Ezio to fall through the ground in some locations.
        Fixed a bug that caused some graphical glitches in Venice.
        Fixed a bug that caused Ezio's cape to behave strangely in some situations.
        Fixed a bug that caused some achievements to be unlocked incorrectly.
        Fixed a bug that prevented players from changing their controls in the options menu.
    
    To download the patch, players had to visit [Ubisoft's website] or launch the game and follow the instructions. The patch size was about 16 MB and required about 4 GB of free disk space to install. The patch was compatible with all versions of the game, except for the Steam version, which had its own update system.
    The patch was well received by players and critics, who praised Ubisoft for removing the online requirement and improving the game's performance and quality. The patch also made the game more accessible and enjoyable for PC gamers, who could now play the game offline and without any interruptions or errors. The patch was considered as a necessary and welcome update for Assassin's Creed 2 on PC.
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