The game made its world premiere at E3 2009 with a trailer during the Microsoft press event . Prior to release , it received a combination of positive and negative critical and community reactions . It attracted an unusually high volume of pre-release controversy about the game 's graphic content . In response , alterations were made to the cover art and both Australia and Germany refused to rate the unmodified edition at the time of release . After release , however , the game was met with positive reviews by critics
E3 2009
E3 2009
Left 4 Dead 2