Updates to Warhammer 40,000: Space Marine have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Added mute all functionality and push to talk
- Fixed 'butterfly' exploit.
- Update matchmaking parameters to search for local matches longer.
- Fixed a crash when cancelling a search
- Fixed an issue where profile progress would not be saved properly if steam cloud was disabled.
- Fixed an exploit where the player can move at high speeds when switching weapons with the Weapons Versatility perk equipped during multiplayer.

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

- Significantly improved VOIP system
- Optimized Fallen Fighters map
- Fixed some Single Player spawn issues
- Various crash fixes for server and client
- Client performance optimizations
- Fixed Hit indications when manual bolting is turned on

Steel Storm: Towers of Doom MOBA mod is here !!!

Changelog 09/23/2011:

+ Added Steel Storm: Towers of Doom mod, early alpha version

Instructions:

To play the mod, add launch options to Steel Storm, "-game tod -customgameuserdirname steelstorm-tod" (with no ""), by right clicking on Steel Storm: Burning Retribution in your Library and choosing Properties > Set Launch Options.

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

Demolition Inc.

• Added command line parameter "-window" to start the game in windowed mode
  

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

• Fixed configurable weapon spawns not allowing Confogl mutation to override spawn behavior
  
• Encore Mutation: Healthpackalypse
  

- Improved input timing by ensuring inputs are processed at a much higher tolerance regarding to framerate.
- OSX binary statically linked.
- Fixed glyph rendering bug in the Flash player which could cause flickering characters.
- Fixed some rendering issues in the Flash player regarding "DX9 device lost" scenarios.
- Fixed some threading issues with sound channel allocations which could cause some sounds not to be played.
- Added a quick fade out transition from in-game to front-end.
- A lot of optimizations in the ActionScript interpreter.
- Improved enumeration of Steam leaderboards, a lot quicker to retreive and update leaderboard entries.
- Using OGG compression of static sounds for improved loading times.
- Major optimizations in the LUA scripting layer, reusing memory as much as possible which means less time spent in garbage collection.
- Reduced number of open file handles to content database which improves loading times.
- Updated SteamWorks SDK.
- Reverted use of DirectInput8 keyboard driver; using Win32 API functions again which proved to be more robust.
- Fixed a bug causing 100% CPU usage when updating Steam leaderboards.
- Overall a lot of CPU optimizations.