Back(breaking)-Story of Game Production

Turtle Rock Studios started to develop Left 4 Dead in mid-2005.  What they intended to make was a horror film-esq video game involved with good character narration structure and multiplayer interactions.  Ultimately Turtle Rock Studios aimed for a high game replay value, which they succeeded upon, in my opinion.  As time went by, the studio slowly released more information and demos on the game.  On November 20th, 2006, the studio publicly announced their game.  The first two places in which the game was first played were at the Showdown 2007 LAN in San Jose and at QuakeCon 2007.  Left 4 Dead was finally released through Valve Corporation (which had a long relationship with Turtle Rock)on October 15th, 2008.  Soon advertisements and contests for the game were showing up everywhere and the game took off from there.