Developer Commentary

The Developer Commentary is an extra mode in Left 4 Dead. In it, the player is able to listen to audio comments made by the developers. The comments are activated when the player starts a commentary node via the "use" key, and may skip them in the same way. In this mode, players go through the No Mercy campaign—with a significant lack of difficulty. Though there are enemies in the game, there are no boss Infected unless the player has spawned them by a node, and the common Infected generally ignore the player until the finale, instead going for the other Survivors first (if all of the others are dead, spawned Special Infected will target the player). Due to this, no achievements may be earned, but it is a way of practicing a number of skills.

The Commentary
[ Node over the First aid kits ]

[Gabe Newell] Hi, my name is Gabe Newell, and welcome to Left 4 Dead. Left 4 Dead is our first attempt to combine the strengths of single player and multiplayer games. We wanted to take the character driven story-telling of our single player games, like Half-Life, and combine it with the social replayability of our multiplayer games like Counter-Strike and Team Fortress 2. Plus Left 4 Dead has zombie hordes and co-op, so what's not to like. To listen to a community...