Counter-Strike: Condition Zero (CS:CZ) is now available for Linux players via Steam. CS:CZ is the fifth Valve title to be released for Linux and, with its release, pushes the total number of Linux games available on Steam to 80.
Launched just three weeks ago, the Steam for Linux client is available for free from the Ubuntu Software Center. More Valve titles are heading to Linux in the coming weeks and months.
For more information, please visit http://steamcommunity.com/linux

Updates to Counter-Strike 1.6 have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life Engine
- Added -sys_ticrate command line option to allowed forced override of ticrate
- Prevent more cases of server redirection
Counter-Strike/Condition Zero- Added -nobots option to allow forced override of bots on servers
Updates to Counter-Strike and Condition Zero have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Counter-Strike and Condition Zero
- Prevent Russian Walking exploit
Server changes- Fixed players being kicked from servers with an INVALID_STEAM_TICKET rejection
- Added a message to the server console to show when the server has reconnected to Steam
- Made map name and other variables reported by the server stay more current
- Fixed mp_timeleft not updating in server rules (or any unlogged cvar for that matter)
- Show HLTV being connected in the player count for pings
- Fixed HLTV staying in players list even after disconnect
- Fixed server hang when a user connects with a specially crafted info string
- Fixed occasional crash under Linux on startup for SMP machines (Linux)
- Cleaned up hlds_run script (Linux)
Updates to the Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed crash caused by specially crafted connect string
Updates to the Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed UI crash when running a MOD
Updates to Counter-Strike 1.6 and Condition Zero have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Counter-Strike 1.6 and Condition Zero
- Fixed crash on level change
A new set of Steamworks features have been released for all Half-Life 1 engine multiplayer games: Counter-Strike 1.6, Condition Zero, Team Fortress Classic, Deathmatch Classic, Ricochet, Day of Defeat and Half-life 1 Deathmatch. The update includes Steamworks features such as player avatars in the scoreboard when playing Counter-Strike and Condition Zero. The update also contains several bug fixes, listed below. Note that this update will require all game servers to restart.
Bug Fixes
- Removed the need to manually re-login and re-authenticate to Steam while in game
- Fixed a crash on startup when running windowed with a non-standard desktop resolution
- Removed the display of saytext (in-game chat text) from players whom you've blocked in Steam friends
- Locked down several engine cvars to prevent malicious script exploits
- Enforced file consistency on several sprites in Counter-Strike
- Removed "ex_extrapmax" cvar (no longer needed)
Server- Added "-noaff" command-line option to disable setting of thread affinity
- Added "bannedcfg" cvar so admins can choose which file is written to by the "writeid" command
Updates to Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Prevented various cvar exploits
Updates to Counter-Strike and Condition Zero have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Counter-Strike and Condition Zero
- Fixed add current server button layout in the serverbrowser
- Don't allow the '&' character in usernames
- Prevented empty chat spam
- Fix for upscaling decals in software renderer
- Duplicated the in-game advertisements from Counter-Strike in Counter-Strike: Condition Zero
Updates to the Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed game exiting when recieving a very large Friend's message
Updates to Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed crash when downloading content in game if IE7 was installed
- Fixed viewdemo command not working correctly with some demos
- Fixed getting duplicate friends message when in game
Updates to the Source and Half-Life 1 Dedicated Server have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Both
- Reduced CPU spikes and overall load during server operation
- Fixed serveral crash bugs on Linux systems running older GLIBC versions
Half-Life 1 Dedicated Server- Clamped the size of the WeaponList network message to prevent a potential buffer overflow exploit (found by Niall FitzGibbon)
Updates to the Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed "This Steam account is being used in another location" error when starting a listen server with LAN mode disabled
Updates to the Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed regression causing Asian language versions to display corrupt characters
Updates to the Half-Life 1 Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1 Engine
- Fixed Asian language versions displaying corrupt characters
- Fixed Condition Zero: Deleted Scenes not loading cz_alamo2 correctly
- Fixed being unable to launch Half-Life: Blue Shift if you didn't own Half-Life 1
Half-Life 1 Dedicated Server- Added new clientcvar2 cvar query interface for developers
- Fixed "-sport" and "+ip" command line options being ignored on startup
Linux users - Hldsupdatetool and our game engines now require GLIBC 2.3.2 or later, the update tool will verify you meet this requirement before installing the game software.
Updates to the Source Engine and Half-Life 1: Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Source Engine
- Fixed loading error when trying to debug Source MODs using the SDK
- Fixed a startup crash in Windows 98
Half-Life 1: Engine- Fixed name exploit causing client crash
Updates to the Half-Life 1: Engine have been released. The update will be applied automatically when your Steam client is restarted. The specific changes include:
Half-Life 1: Engine
- Fixed MOTD crash when viewing HTML pages with iframes
An update for CS:CZ and Counter-Strike has just been released. Steam will update itself automatically when you restart. Here is a list of the changes:
COUNTER-STRIKE: CONDITION ZERO:
- Improved behavior when a user changed their name to "spec_HELP_TEXT"
COUNTER-STRIKE
- Improved behavior when a user changed their name to "spec_HELP_TEXT"
- Players are only blocked by the shield's hitbox
- Changing weapons but keeping the same animation index plays the new weapon's animation
- Improved how smoke grenades come to rest
- HE, smoke, and flashbang crosshairs are now the same size
- Improved famas burst mode firing (matches the visuals)
- Improved closed shield behavior
- Improved hint message overwriting behavior
- Switching to the C4 or grenades no longer masks AWP firing sound
- Improved behavior of footstep sound when jumping to a different surface type
- Buying a primary while throwing a grenade no longer lets players have primary weapons + shields
- Improved sv_restart behavior (limit is increased to 60 seconds)
- Cycler_sprites are reset properly and show up on subsequent rounds (chickens)
An update for CS:CZ and HLTV has just been released. Steam will update itself automatically when you restart. CZ servers will need to be restarted in order to run this update. Here is a list of the changes:
COUNTER-STRIKE: CONDITION ZERO:
- Added de_truth_cz
- Added de_corruption_cz
- Improved accuracy of the player hitbox
- Improved bot knife fighting logic
- Improved bot behavior when all 32 player slots are filled
- Improved bot_auto_vacate behavior
- Improved behavior of footstep sound when jumping to a different surface type
- Improved behavior of weapon animations when switching weapons
- Improved behavior of brass ejection in relation to player's velocity
- Improved how smoke grenades come to rest
- Improved sv_restart behavior (limit is increased to 60 seconds)
- Improved hint message overwriting behavior
- Improved closed shield behavior
- Improved famas burst mode firing (matches the visuals)
- Improved display of locations shown under the radar
- Improved behavior of cycler_sprites on subsequent rounds (chickens on cs_italy, cs_italy_cz)
- Improved shield hitbox to be more accurate
- Improved behavior of team_say
- HE grenades no longer damage players through walls and other obstacles
- HE grenade damage and radius increased by 50% (to account for new behavior)
- HE, smoke, and flashbang crosshairs are now the same size
- Switching to the C4 or grenades no longer masks AWP firing sound
- Old-style menus can now choose Milita & Spetsnaz
- Crosshair doesn't show at round restart if a player has the shield closed
- Server prints team and player info in the console for chat messages
COUNTER-STRIKE: CONDITION ZERO DELETED SCENES:
- Added previously unreleased missions Fastline, Sandstorm, and Pipe Dream
HLTV:
- Addressed split packet issue (found by Luigi Auriemma)
An update for CS:CZ and Counter-Strike has just been released. This release features three previously unreleased bonus missions for Condition Zero Deleted Scenes. Steam will update itself automatically when you restart. Here is a list of the additions:
COUNTER-STRIKE: CONDITION ZERO DELETED SCENES:
- Added previously unreleased missions Miami Heat, Truth in Chaos, and Run
COUNTER-STRIKE:
- Improved behavior of team_say
- Server prints team and player info in the console for chat messages
- Improved memory efficiency of hitbox animations to address intermittent server lag
Additionally, work is under way to transition players from WON to Steam. WON authentication servers will be phased out by the end of summer. If you have not already done so, you can download Steam
here.