An update has been released for Left 4 Dead 2.

- Quick Match option for all modes allows players to prefer "Official Servers Only" or "Any Servers"
- Added localized UI and subtitles for Vietnamese
- Increased string commands per second limit to fix some false disconnects
- Prevent manually initiating some talker responses that trigger longer conversations
- Fixed color correction for some maps where it was missing or incorrect
- Fixed melee animation while carrying a fireworks crate
- Fixed M60 not using the correct walk calm animation
- MP5 changed to the slightly better rifle reload animation
- SG552 changed to use assault rifle animations and military sniper zoom animations
- Fixed incorrect sound cue for player infected when a survivor dies
- Changed some mob onslaughts to classic panic events in the L4D mutation
- Boomer bile slows tanks in Tank Run mutation
- Several Rocket Dude mutation fixes and performance improvements
- New survivor alert response rules for intense combat situations
- Scripting:
• Fire the "KilledZombie" response concept when killing a Witch.
• New "EntityOutputs" class containing functions to manipulate entity output connections.
○ GetNumElements, GetOutputTable, HasOutput, HasAction, AddOutput, RemoveOutput
• Expanded response rules testbed.

An update has been released for Left 4 Dead 2.

- Fixed survival stats getting reported during demo playback
- Fixed response rules "campaign" criteria not recognizing DLC campaigns
- Enabled stats reporting for CS weapons
- Fixed some caption colors
- Updated Spanish translations
- Fixed talker typo
- Script Functions:
• "ForceVersusStart" to force start the versus round.
• "ForceSurvivalStart" to force start the survival round.
• "ForceScavengeStart" to force start the scavenge round.
• "QueueSpeak" (hEntity, szConcept, flDelay, szCriteria) to queue a speech concept
• "RushVictim" (hVictim, flRange ) to force all common zombies in range to rush the victim. If hVictim isn't set, a random survivor will be chosen.

An update has been released for Left 4 Dead 2.

Script:
- Global: "LocalTime" Fills out a table with the local time
- Player: "IsSuppressingFallingDamage" returns true if falling damage is currently suppressed for the player
- Run optional script "response_testbed_addon.nut" for all active addons
- Don't report addon file collisions for "sound.cache"
Other:
- Fixed talker typos
- Minor fixes to RocketDude and Taaaank! Mutations
- Enabled game stats reporting for DLC content
- Removed a legacy vpk loading path that allowed malformed vpks to crash the game.

An update has been released for Left 4 Dead 2.

Script additions:
- Added "Inflictor" field to damage table for "AllowTakeDamage"
- Director function "WarpAllSurvivorsToCheckpoint"
- Director function "WarpAllSurvivorsToBattlefield"
- Director function "WarpAllSurvivorsToFinale"
Other:
- Updated RocketDude mutation to version 1.7.
- Fixed some typos in talker scripts.

An update has been released for Left 4 Dead 2.

- Honorary achievement for Gnome Chompski's upcoming journey into space on Rocket Lab's "Return To Sender" mission.

An update has been released for Left 4 Dead 2.

- Fixed a regression that caused map exploit fixes to appear in co-op modes again.

An update has been released for Left 4 Dead 2.

- Fixed The Last Stand's Village Scavenge map not having any weapons.
- Recompiled common infected materials to fix visual errors on Linux.
- Removed alarm glass from a non-alarm car.
- Fixed Special Infected being able to trigger the helicopter flyover when leaving the bumper car building on Dark Carnival Barns.
- c7m1 and c12m5: Fixed a few nav issues that caused tanks to get stuck.
- c1m1: Marked all areas outside of building on ground as not allowing any spawns.
- c11m5: Marked a few areas near the plane crash fire as no-threat to prevent tanks from spawning too close to the fire.

An update has been released for Left 4 Dead 2.

- Fixed a long-standing ragdoll crash, caused by stale bone data after toggling addons that override common infected models.

An update has been released for Left 4 Dead 2.

- Fixed a crash when decoding bones.
- Fixed a mesh error when drawing the crosshair with colorblind mode active.
- Fixed a double-add of the client shadow manager restore function.
- Fixed mode-only addons sometimes getting removed on map load.
- Fixed some military sniper activity names.
- Changed crowbar and pitchfork to slash damage only.
- "AllowFallenSurvivorItem" can be called outside of mutations.
- Talker and survival updates.

An update has been released for Left 4 Dead 2.

Last Stand:
- Fixed ammo pile in Junkyard not spawning on second round of Versus.
- Fixed exploit where the trigger used to quiet the Director could be activated after the finale started.

Survival:
- Fixed an issue where Fallen Survivors could still drop medkits on Riverbank.
- Fixed issue where several weapon spawners would absorb dropped weapons on Barge.

Tank Run:
- Fixed an issue in Scavenge finales that prevented the escape vehicle from working.
- The Sacrifice finale will now spawn Tanks properly and the bridge will lower when the timer reaches 0.

RocketDude:
- Fixed players ending up with no viewmodel and no avatar by rejoining a game where any survivor already left the safe room.
- Added support for custom playground maps ( a guide will provided by ReneTM ).
- Fixed players not instantly dying when jumping into c14m1 safe room water area.
- Fixed players not instantly dying when jumping into c14m2 finale water.
- Lowered slow motion probability from 10% to 5% as requested by many players.
- Fixed RocketDude decals sometimes not showing up.
- Fixed new best times not saving.
- Added Start and finish textures.

Other:
- Updated several Mutations to fix the issue where the weapons in Whitaker's Gun Store weren't being removed or converted.
- Fixed tanks failing to spawn in versus on No Mercy 3 (at 90+% boss flow).
- Fixed tanks spawning before the finale on No Mercy 5.
- Fixed a few stuck Special Infected issues on survival maps.
- Fixed setting the input mode to joystick/Steam Input.
- Increased command limit before causing a disconnect.
- Fixed some reported model crashes.