Updates to Alien Swarm have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Alien Swarm

• Fixed crash to desktop on certain graphics cards
  
• Fixed matchmaking sending you to the wrong mission
  
• Fixed not being able to earn the “Ammo Technician” achievement
  
• Fixed not being able to open particle systems in the editor
  

Updates to Alien Swarm have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Alien Swarm

• Fixed weapon switch key in the 360 controller config
  
• XP and level are stored in the Steam Cloud
  
• Fixed duplicate rows in the "Find Public Games" screen
  
• Reduced screen shake when you have high ping
  
• Fixed dedicated server always starting in LAN mode
  
• Fixed custom item button binds not displaying properly on HUD
  
• Fixed full network updates causing duplicate client ragdolls to spawn
  
• Added console commands to change game access on the fly (make_game_public and make_game_friends_only)
  
• Fixed welding icon sometimes getting stuck above player's head
  
• Fixed HUD elements being cut off in ultra wide resolutions
  
• Removed cheat flag from a number of cosmetic console commands
  
• Now firing, meleeing, or reloading while welding will break you out of the weld
  
• Fixed spectators earning achievements
  
• Fixed infinite ammo exploit
  
• Fixed XP exploit
  

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Left 4 Dead 2

• Added additional protection for critical files
  
• All add-on files will be loaded when connecting to a Non-Official server regardless of game mode
  
• Only approved custom maps will be loaded when connecting to an Official server
  
• Player's can print the contents of the consistency list with "cl_print_consistency_list". If the server has sv_consistency disabled, the user will be notified when they attempt to print the list
  
• Improvement to Hammer load times
  

Updates to Portal have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Portal

• Fixed bonus map import dialog
  

Updates to Team Fortress 2, Counter-Strike: Source and Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Server Browser

• Fixed the server browser not saving filter settings properly
  

Team Fortress 2

• Fixed a speed exploit related to benchmarks
  
• Fixed Parasite hat not being posed correctly on class loadout panels
  
• Fixed a level change crash
  

Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Team Fortress 2

• Added a Parasite hat to celebrate the release of Alien Swarm (http://www.alienswarm.com/)
  
• Fixed a client crash when opening the backpack while running in a language other than English.
  
• Fixed not being able to pick-up buildings in Arena mode.
  
• Fixed an exploit that allowed team kills with Wrangled sentries.
  
• Fixed a bug where teleporters could be given more than their normal amount of health.
  
• Fixed old demos with different data tables thinking the SourceTV player entity was burning.
  
• TF Bot Changes
  
  • Improved performance of bot computations that are done when a point is captured, a round starts, or a checkpoint reached.
    
  • Fixed Engineer bot infinite build-destroy behavior loop regression
    
  • Fixed Medic bots losing their charge if they touch a resupply cabinet
    
  • Fixed a crash due to having multiple types of bot systems running in-game simultaneously
    
  • Fixed bot behavior issue resulting in bot pile-ups near level 3 teleporter entrances
    
  • Bots no longer consider sapped sentries a dangerous threat
    
  • Bots will not try to navigate through enemy spawn rooms (unless they have won the round)
    
  • Bot Engineers will avoid building teleporters on steep slopes which can hinder teammate movement
    
  • Added tf_bot_pyro_always_reflect cvar. Set to 1 to make Pyro bots always reflect projectiles, regardless of difficulty level.
    

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Changes:

• New mutation: Hard Eight
  

Updates to Counter-Strike: Source, Team Fortress 2 and Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Engine

• Tuned thread initialization to improve performance on CPUs with more than four cores
  

Counter-Strike: Source

• Fixed leftover shadows when ragdoll physics are disabled
  
• Added stats gathering to track client and server performance
  
• Added instrumentation to help debug network issues
  
• Disabled some unsupported threading convars
  

Updates to Booster Trooper have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Booster Trooper

• Added: new map - Underground Base
  
• Improved: Automatic map switching for dedicated servers
  
• Fixed: Unknown player names
  
• Improved: Controller usage in Menu
  

Updates to Garry's Mod have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Garry's Mod

• Fixed datapack client crash when trying to join misconfigured server
  
• Fixed crash in point_viewcontrol
  
• Increased max ragdoll bones to 32
  
• Fixed manhack crash
  
• Fixed weaponless combine npc crash
  
• Fixed Lua related NPC crashes
  
• Fixed unclickable message boxes
  
• Fixed crash when trying to retrieve the gamemode description
  
• Added surface.DrawCircle( x, y, radius, color )
  
• Added surface.DrawTexturedRectUV( x, y, w, h, scalex, scaley )
  
• Added Panel:SizeToChildren()