In " Left 4 Dead 2 " two additional modes have been introduced.
Hidden Path has also contributed model work on " Left 4 Dead 2 ".
In early August 2012, Valve said it had successfully completed the " Left 4 Dead 2 " port.
A second type of infected introduced in " Left 4 Dead 2 ", are the " uncommon infected ".
He also provided the violin and trumpet performances on the soundtracks for the popular Valve Corporation video games Left 4 Dead 2 and Team Fortress 2.
In 2009, a town, namely'Rayford', which was loosely based on Athens, appeared in the video game Left 4 Dead 2.
The " Left 4 Dead 2 " content was set for release in March 2010, however it was delayed until April 22, 2010.
With the introduction of a Linux client for Steam, Valve has affirmed that " Left 4 Dead 2 " will be developed for Linux.
For 24 hours on 25 26 December 2013, Valve offered " Left 4 Dead 2 " for free on PC using its Steam platform.
Two songs from the fictional rock group, the Midnight Riders, from " Left 4 Dead 2 " have been added through the network.