Left 4 Dead — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Left 4 Dead - Update | 2025-08-22 | An update has been released for Left 4 Dead. - Block clients' ability to pause dedicated servers, unless the server operator has explicitly allowed it. |
| Left 4 Dead Update | 2025-01-17 | An update has been released for Left 4 Dead. - Fixed exploits used to crash remote servers. |
| Left 4 Dead - Update | 2024-12-02 | An update has been released for Left 4 Dead. - Fixed some exploits used to crash remote servers. |
| Left 4 Dead - Update | 2024-10-25 | An update has been released for Left 4 Dead. - Fixed several crash and remote code execution exploits. |
| Left 4 Dead - Update | 2024-06-12 | An update has been released for Left 4 Dead game and authoring tools: - Fixes for several crash and remote code execution exploits. |
| Left 4 Dead - Update | 2024-05-01 | An update has been released for Left 4 Dead: - Fixed an exploit that could force votes to pass without notifying other players. - Added protections against malicious network packets. - Integrated several exploit fixes from Left 4 Dead 2. |
| Left 4 Dead - Update | 2024-01-19 | An update has been released for Left 4 Dead: - Fixed several vulnerabilities and exploits, reported via HackerOne. - Localization fixes, added Latin American Spanish. |
| Left 4 Dead - Update | 2022-01-31 | An update has been released for Left 4 Dead. - Fixed a potential remote code execution exploit through malformed file uploads. Reported via HackerOne. |
| Left 4 Dead - Update | 2021-08-10 | An update has been released for Left 4 Dead - Fixed Authoring Tools failing to write to disk |
| Left 4 Dead - Update | 2021-08-09 | An update has been released for Left 4 Dead - Fixed several potential RCE exploits. |
| What do Zombies Think? | 2012-06-15 | While cleaning/moving our offices around (all our desks at Valve are on wheels so we can have desk races), we discovered this old, long ago used Zombie decision making tree. It was created before our session with Mike Patton to record the common zombie sounds. While it is near indecipherable gibberish thanks to bad penmanship, it shows not at an AI level how a zombie behaves but all the speech opportunities and transitions. Our favorite is the top. Lay Down? Nope. Want to vomit? Sure. |
| What do Zombies Think? | 2012-06-15 | While cleaning/moving our offices around (all our desks at Valve are on wheels so we can have desk races), we discovered this old, long ago used Zombie decision making tree. It was created before our session with Mike Patton to record the common zombie sounds. While it is near indecipherable gibberish thanks to bad penmanship, it shows not at an AI level how a zombie behaves but all the speech opportunities and transitions. Our favorite is the top. Lay Down? Nope. Want to vomit? Sure. http://media.steampowered.com/apps/l4d/images/chart_thumb1.jpg |
| Left 4 Dead Zombie Holiday Sale! | 2011-12-10 | http://media.steampowered.com/apps/l4d/images/l4d_sale.jpg Looking around at holiday decorations and sales, we noticed an alarming lack of zombies. We needed to fix that. We did. |
| Left 4 Dead Zombie Holiday Sale! | 2011-12-10 | Looking around at holiday decorations and sales, we noticed an alarming lack of zombies. We needed to fix that. We did. |
| July 1 Update | 2011-07-01 | Lone Gunman, Following L4D2, Movie Fan, Next Wednesday Lone Gunman You and your Magnum against the deadly horde and Boomers. So you have your Magnum pistol and… well you do have your Magnum pistol. You better be counting bullets because four swipes by a common and you are dead. Getting boomed? Forget about it. Following Left 4 Dead 2 How do you follow Left 4 Dead 2? It depends on your platform. If you are on the PC or Mac: Facebook Only 4% Twitter Only 2% Steam Forums Only 36% Facebook/Twitter/Steam 5% Facebook/Twitter 1% Facebook/Steam 16% Twitter/Steam 4% None of the above 32% Another way to look at it is 26% PC/Mac players use Facebook, 12 |
| July 1 Update | 2011-07-01 | Lone Gunman, Following L4D2, Movie Fan, Next Wednesday Lone Gunman You and your Magnum against the deadly horde and Boomers. So you have your Magnum pistol and… well you do have your Magnum pistol. You better be counting bullets because four swipes by a common and you are dead. Getting boomed? Forget about it. Following Left 4 Dead 2 How do you follow Left 4 Dead 2? It depends on your platform. If you are on the PC or Mac: Facebook Only 4% Twitter Only 2% Steam Forums Only 36% Facebook/Twitter/Steam 5% Facebook/Twitter 1% Facebook/Steam 16% Twitter/Steam 4% None of the above 32% Another way to look at it is 26% PC/Mac players use Facebook, 12 |
| January 18th - Left 4 Dead Xbox 360 Update | 2011-01-18 | Last night a few updates were applied to the Xbox 360 version of Left 4 Dead. Foremost is the ability to recover achievement progress that was lost after The Sacrifice release. Recovered progress will be added to any new progress made since the release. In a few cases it may not be possible to recover the data for every achievement, but the majority of players should see their progress restored. The update also includes the following: • In Versus mode Tanks will spawn in stasis until a human player takes over. Tanks in stasis are invisible and invulnerable, and won't move or attack. • Tank speed is no longer reduced when on fire. • Allow play |
| January 18th - Left 4 Dead Xbox 360 Update | 2011-01-18 | Last night a few updates were applied to the Xbox 360 version of Left 4 Dead. Foremost is the ability to recover achievement progress that was lost after The Sacrifice release. Recovered progress will be added to any new progress made since the release. In a few cases it may not be possible to recover the data for every achievement, but the majority of players should see their progress restored. The update also includes the following: • In Versus mode Tanks will spawn in stasis until a human player takes over. Tanks in stasis are invisible and invulnerable, and won't move or attack. • Tank speed is no longer reduced when on fire. • Allow play |
| November 19th Update | 2010-11-19 | Gib Fest and…, You are Glowing, Do you compete? Gib Fest M60s and buckets of blood. For our coop mutation this week we return to everyone’s favorite Gib Fest. Simple, go play. Realism Versus We are also “featuring” Realism Versus. This week we added quicker spawns for the infected. If you haven’t played recently, you are missing out on one of the most intense Left 4 Dead 2 competitive experiences. It is like regular Versus but no health kits in the world, no glows on fellow survivors, harder to kill commons and now faster Special Infected spawns (coming soon to the 360). Give it a try this week, it's what all the cool kids will be playing. Yo |
| November 19th Update | 2010-11-19 | Gib Fest and…, You are Glowing, Do you compete? Gib Fest M60s and buckets of blood. For our coop mutation this week we return to everyone’s favorite Gib Fest. Simple, go play. Realism Versus We are also “featuring” Realism Versus. This week we added quicker spawns for the infected. If you haven’t played recently, you are missing out on one of the most intense Left 4 Dead 2 competitive experiences. It is like regular Versus but no health kits in the world, no glows on fellow survivors, harder to kill commons and now faster Special Infected spawns (coming soon to the 360). Give it a try this week, it's what all the cool kids will be playing. Yo |