 TQCast E3 Sewer Shakycam Source: TQCast 20 Jul 2008 |
 GameSpot E3 Live – L4D Source: GameSpot 23 Jul 2008 |
 5 minutes E3 Shakycam Source: Tom’s Games 24 Jul 2008 |
 WhatIfGaming Doug Interview Source: WhatIfGaming 27 Jul 2008 |
 E3 Chet Interview Source: E3Coverage.com 29 Jul 2008 |
 L4D HD Developer Commentary 1 Source: IGN 21 Aug 2008 |
 L4D HD Developer Commentary 2 Source: IGN 21 Aug 2008 |
 L4D GC 2008 Source: GameStar.de 21 Aug 2008 |
 Leipzig/E3 2008 L4D Trailer Source: Shacknews 22 Aug 2008 |
 GameSpot Chet Interview at PAX Source: GameSpot 31 Aug 2008 |
 Urban Battleground at PAX Source: GameVideos 30 Aug 2008 |
 Last Stand at PAX Source: GameVideos 30 Aug 2008 |
 Subway at PAX Source: GameVideos 30 Aug 2008 |
 X360 Walkthrough Part 1 Source: GameTrailers 1 Sep 2008 |
 X360 Walkthrough Part 2 Source: GameTrailers 1 Sep 2008 |
