Dead Rising 2 (PC)More ways to play with zombies.
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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
Fixed a sentry gun exploit that let Engineers build multiple sentries
Fixed Engineers being able to build level 3 mini-sentries using The Wrangler
Fixed the Holy Mackerel hit triggering the first blood event in Arena mode
Fixed seeing error particle systems in old demos
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With The Ball’s pre-purchase open comes this one-off opportunity to pick up a special Killing Floor character for free. If you buy The Ball during the pre-purchase period (when there is a 10% discount as well), you will get this unique KF character for free. And the KF character is Harchier Spebbington, the famous archeologist [...]
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Medal of Honor (PC)Shooty-bang-bang more popular than football and disco, says British public.
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Updates to Left 4 Dead have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Left 4 Dead
Allow thirdperson settings in cooperative game modes
Added support for Russian audio in The Sacrifice
Game correctly recognizes the audio language set in Steam
Fixed "Sacrifizzle" achievement
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Medal of Honor (PC)European review scores soar as Medal of Honor prepares for EU launch.
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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
New Mutation: Hunting Party
Fixed door exploit in No Mercy
Now Allow thirdperson settings in cooperative game modes
Fixed add-on campaigns not always appearing in the campaign selection screen
Restored dedicated server support for add-on campaigns
Fixed some rendering artifacts on Mac
Added support for Russian audio in The Sacrifice... [read more]

Updates to Counter-Strike: Source Beta have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Counter-Strike: Source Beta
Fixed performance issues and memory leaks related to scoreboard display.
Fixed long-standing bug in which a player would see another player in a grenade-throwing animation when they no longer had a grenade as their active weapon.
Fixed animation problem (“crab walk”) caused by aborting bomb plan... [read more]

F.E.A.R. 3 (PC)Get out your power armor.
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Medal of Honor (PC)Game is "off to a great commercial start," says EA.
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