Source/Engine versions
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List of 
Source engine versions and build numbers. Source Engine build number is the number of days since November 7, 1998 (with the exceptions of Half-Life 2 leak and VTMB, which are September 30, 2003 (Half-Life 2 original planned release date) and August 24, 2003 respectively).
Note:Since later versions of Left 4 Dead engine branch (in March 2009), and all games after Portal 2, Protocol version number are tied to "PatchVersion", while Left 4 Dead 2 are tied to "NetworkVersion".
| Build (exe) | Build (PatchVersion) | Game | Branch | Protocol version | Date | Notes |
|---|---|---|---|---|---|---|
| -7 | Half-Life: Source, Counter-Strike: Source | Source 2004 | Protocol Version 2 | Sep 23 2003 | Leaked alongside Half-Life 2 on October 2003. | |
| -4 | Half-Life 2 | Source 2004 | Protocol Version 2 | Sep 26 2003 | Infamous October 2003 leak build. | |
| 466 | Vampire: The Masquerade - Bloodlines | Source 2004 (Beta) | Protocol Version 1 | Dec 2 2004 | VTMB engine runs on modified version of Source similar to Half-Life 2 leak (also known as Half-Life 2 Beta). | |
| 2106 | Counter-Strike: Source | Source 2004 | Protocol Version 3 | Aug 13 2004 | CS:S Version for Internet Cafe | |
| 2153 | Half-Life: Source, Half-Life 2, Counter-Strike: Source | Source 2004 | Protocol Version 5 | Sep 29 2004 | Half-Life 2 Collector's Edition Version | |
| 2187 | Half-Life 2, Counter-Strike: Source | Source 2004 | Protocol Version 6 | Nov 4 2004 | Release build | |
| 2213 | Half-Life 2: Deathmatch | Source 2004 | Protocol Version 7 | Dec 1 2004 | ||
| 2215 | Half-Life 2, Half-Life 2: Deathmatch, Counter-Strike: Source | Source 2004 | Protocol Version 7 | Nov 30 2004 | ||
| 2217 | Half-Life: Source, Half-Life 2, Counter-Strike: Source, Half-Life 2: Deathmatch | Source 2004 | Protocol Version 7 | Dec 2 2004 | ||
| 2229 | Half-Life 2 | Source 2004 | Protocol Version 7 | Dec 15 2004 | ||
| 2230 | Counter-Strike: Source | Source 2004 | Protocol Version 7 | Dec 15 2004 | ||
| 2259 | Counter-Strike: Source | Source 2004 | Protocol Version 7 | Jan 30 2005 | ||
| 2279 | Counter-Strike: Source | Source 2004 | Protocol Version 7 | Feb 16 2005 | ||
| 2293 | Counter-Strike: Source | Source 2004 | Protocol Version 7 | Feb 21 2005 | ||
| 2301 | Counter-Strike: Source | Source 2004 | Protocol Version 7 | Feb 27 2005 | ||
| 2342 | Half-Life 2 | Source 2004 | Protocol Version 7 | Mar 24 2003 | used for creating demo of e3_town_04 map (e3_town_02 demo). | |
| 2345 | Half-Life 2 | Source 2004 | Protocol Version 7 | Mar 27 2003 | used for creating demo of e3_outpost_test map (e3_outpost_1 demo). | |
| 2364 | Half-Life 2 | Source 2004 | Protocol Version 7 | Apr 15 2003 | used for creating demo of e3_seacliff map (e3_seacliff_1b demo). | |
| 2371 | Half-Life 2 | Source 2004 | Protocol Version 7 | Apr 22 2003 | used for creating demo of e3_seafloor_01 map (e3_seafloor_sawyer1 demo). | |
| 2378 | Half-Life 2 | Source 2004 | Protocol Version 7 | Apr 29 2003 | used for creating test version of Kleiner's Lab, Phystown and Bugbait videos (e3_alyx, e3_phys_01 and e3_bugbait_01 demos). | |
| 2379 | Half-Life 2 | Source 2004 | Protocol Version 7 | Apr 30 2003 | used for creating test versions of Kleiner's Lab video (e3_lab_02 and 03 demos). | |
| 2390 | Half-Life 2 | Source 2004 | Protocol Version 7 | May 11 2003 | used for creating Tunnels (final and test versions), Barricade and Bugbait videos. | |
| 2433 | Counter-Strike: Source | Source 2004 | Protocol Version 7 | Jul 6 2005 | ||
| 2455 | Half-Life: Source, Half-Life 2, Counter-Strike: Source, Half-Life 2: Deathmatch | Source 2004 | Protocol Version 7 | Jul 28 2005 | ||
| 2459 | Half-Life: Source, Half-Life 2, Counter-Strike: Source, Half-Life 2: Deathmatch | Source 2004 | Protocol Version 7 | Aug 1 2005 | ||
| 2495 | Half-Life: Source | Source 2004 | Protocol Version 7 | Sep 5 2005 | ||
| 2496 | Half-Life: Source | Source 2004 | Protocol Version 7 | Sep 6 2005 | ||
| 2497 | 1.0.0.0 (DOD:S) | Half-Life 2, Counter-Strike: Source, Half-Life 2: Deathmatch, Day of Defeat: Source | Source 2004 | Protocol Version 7 | Sep 8 2005 | Initial release of Day of Defeat: Source runs on this version. Source 2004 was updated to add HDR, DirectX 9.0+/dxlevel 95, Commentary System (unused in DOD:S), and more features. |
| 2519 | Counter-Strike Source, Half-Life 2: Deathmatch, Day of Defeat: Source | Source 2004 | Protocol Version 7 | Sep 30 2005 | Russian copy of Counter-Strike: Source (which also includes Half-Life 2: Deathmatch and Day of Defeat: Source). | |
| 2547 | Half-Life 2, Half-Life 2: Lost Coast | Source 2004 | Protocol Version 7 | Oct 28 2005 | Half-Life 2: Lost Coast was released, aside from HDR and other features introduced in DOD:S, Commentary System is used in Half-Life 2: Lost Coast. | |
| 2578 | Half-Life 2, Counter-Strike: Source | Source 2004 | Protocol Version 7 | Nov 28 2005 | ||
| 2596 | Half-Life: Source, Half-Life 2, Counter-Strike: Source | Source 2004 | Protocol Version 7 | Dec 16 2005 | ||
| 2601 | Half-Life 2 | Source 2004 | Protocol Version 7 | Dec 2 2005 | 64-bit build | |
| 2602 | Half-Life 2, Half-Life 2: Lost Coast | Source 2004 | Protocol Version 7 | Dec 22 2005 | 64-bit build | |
| 2700 (Supposed) |
SiN Episodes | Source 2004 | Protocol Version 7 | Mar 30 2006 | Pre-release build, not playable (lacks client.dll/server.dll for this build). | |
| 2707 | Half-Life: Source, Half-Life 2, Half-Life 2: Lost Coast, Half-Life 2: Deathmatch, Counter-Strike: Source, Day of Defeat: Source | Source 2004 | Protocol Version 7 | Apr 6 2006 | Last version of Source 2004 used in Valve games. Half-Life 2 and Lost Coast continues to run on this engine until 2010, when it was upgraded to Source 2009. | |
| 2708 | SiN Episodes | Source 2004 | Protocol Version 7 | Apr 8 2006 | Pre-release build | |
| 2722 | SiN Episodes | Source 2004 | Protocol Version 7 | May 5 2006 | Initial release for SiN Episodes. | |
| 2722 | SiN Episodes | Source 2004 | Protocol Version 7 | Jul 14 2006 | Last version for SiN Episodes. | |
| 2733 | Half-Life: Source, Half-Life 2: Episode One, Counter-Strike: Source | Source 2006 | Protocol Version 7 | May 2 2006 | First Episode One (Source 2006) build. | |
| 2737 | Half-Life: Source | Source 2006 | Protocol Version 7 | May 6 2006 | ||
| 2761 | Half-Life: Source, Half-Life 2: Episode One | Source 2006 | Protocol Version 7 | May 30 2006 | ||
| 2803 | Half-Life 2: Episode One | Source 2006 | Protocol Version 7 | Jul 11 2006 | Build shown on EP1 Hopwire weapon video | |
| 2894 | Counter-Strike: Source | Source 2006 | Protocol Version 7 | Jul 14 2006 | ||
| 2915 | Source Particle Benchmark | Source 2006 | Protocol Version 7 | Oct 31 2006 | ||
| 2940 | Dark Messiah of Might & Magic Single Player | Source 2006 | Protocol Version 7 | Nov 28 2006 | ||
| 2949 | Half-Life 2: Episode One, Counter-Strike: Source, Garry's Mod (v10) | Source 2006 | Protocol Version 7 | Dec 6 2006 | ||
| 2959 | Half-Life 2: Episode One | Source 2006 | Protocol Version 7 | Dec 16 2006 | ||
| 2992 | Half-Life Deathmatch: Source | Source 2006 | Protocol Version 7 | Jan 16 2007 | ||
| 3048 | Counter-Strike: Source | Source 2006 | Protocol Version 7 | Jul 7 2007 | ||
| 3152 | Half-Life Deathmatch: Source, Counter-Strike: Source | Source 2006 | Protocol Version 7 | Jun 25 2007 | ||
| 3181 | Counter-Strike: Source | Source 2006 | Protocol Version 7 | Jul 24 2007 | ||
| 3188 | Half-Life Deathmatch: Source, Counter-Strike: Source | Source 2006 | Protocol Version 7 | Jul 31 2007 | Removed "Friends" menu option in favor of Steam overlay, which was introduced back around September (or earlier) in 2007. This change doesn't applies to Half-Life 2 (confirmed on The Orange Box retail copy), since it never received any engine updates again until 2010. | |
| 3198 | Half-Life 2: Episode Two (Postal III leak) | Source 2007 Beta | Protocol Version 7 | Aug 10 2007 | Postal III leaked build. | |
| 3219 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal, Team Fortress 2 (Xbox 360) | Source 2007 | Protocol Version 8 | Aug 31 2007 |  The Orange Box on Xbox 360. The PC version of Half-Life 2 and Episode One continues to use Source 2006 engine.
| |
| 3224 | Half-Life: Source, Half-Life 2: Episode One, Counter-Strike: Source | Source 2006 | Protocol Version 7 | Sep 5 2007 | Included in The Orange Box (PC).
| |
| 3236 | Team Fortress 2 (PC) | Source 2007 Beta | Protocol Version 8 | Sep 17 2007 | ||
| 3239 | Team Fortress 2 | Source 2007 Beta | ? | Sep 20 2007 | ||
| 3240 | Team Fortress 2 | Source 2007 | Protocol Version 8 | Sep 20 2007 | TF2 Russian release (Buka) | |
| 3258 | Half-Life 2: Episode Two, Portal | Source 2007 | Protocol Version 11 | Oct 9 2007 | The Orange Box (PC) launch version.
| |
| 3264 | Half-Life: Source, Half-Life 2: Episode One, Half-Life 2: Deathmatch, Counter-Strike: Source | Source 2006 | Protocol Version 7 | Oct 15 2007 | While the Friends menu was already removed and make non-functional back in July 2007, it was still included in  's GameMenu.res until this build which removes it.
| |
| 3285 | Portal | Source 2007 | Protocol Version 14 | Oct 10 2007 | ||
| 3300 | Half-Life 2: Episode Two, Portal | Source 2007 | Protocol Version 14 | Nov 20 2007 | ||
| 3338 | Half-Life 2: Episode Two | Source 2007 | Protocol Version 14 | Dec 28 2007 | ||
| 3343 | Team Fortress 2 | Source 2007 | Protocol Version 14 | Jan 2 2008 | ||
| 3366 | Team Fortress 2 | Source 2007 | Protocol Version 14 | Jan 25 2008 | ||
| 3412 | Half-Life 2: Episode Two | Source 2007 | Protocol Version 14 | Mar 11 2008 | ||
| 3420 | Portal, Team Fortress 2, Half-Life 2: Episode Two | Source 2007 | Protocol Version 14 | Mar 19 2008 | ||
| 3429 | Half-Life 2: Episode Two | Source 2007 | Protocol Version 14 | Mar 28 2008 | ||
| 3432 | Team Fortress 2 | Source 2007 | Protocol Version 14 | Mar 31 2008 | ||
| 3467 | Half-Life 2: Episode Two, Team Fortress 2 | Source 2007 | Protocol Version 14 | May 6 2008 | ||
| 3530 | Portal, Half-Life 2: Episode Two, Source SDK Base 2007, Day of Defeat: Source, Garry's Mod (v11), Team Fortress 2, Team Fortress 2 Dedicated Server | Source 2007 | Protocol Version 14 | Jul 8 2008 | ||
| 3531 | Half-Life 2, Half-Life 2: Episode One, Counter-Strike: Source, Half-Life 2: Deathmatch, Half-Life Deathmatch: Source, Source SDK Base 2006, Source Dedicated Server | Source 2006 | Protocol Version 7 | Jul 8 2008 | ||
| 3539 | Team Fortress 2 | Source 2007 | Protocol Version 14 | Jul 16 2008 | ||
| 3575 | Half-Life 2: Episode Two, Day of Defeat: Source, Zombie Panic: Source, Team Fortress 2, Garry's Mod (v11) | Source 2007 | Protocol Version 14 | Aug 21 2008 | ||
| 3642 | 1.0.0.0 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 36 | Oct 28 2008 | Retail, pre-certification build. |
| 3658 | 1.0.0.5 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 37 | Nov 12 2008 | Pre-release build, only includes client.dll. |
| 3663 | 1.0.0.5 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 37 | Nov 17 2008 | Release build. |
| 3666 | 1.0.0.5 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 37 | Nov 20 2008 | |
| 3681 | 1.0.0.7 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 37 | Dec 5 2008 | |
| 3693 | Half-Life 2: Episode One | Source 2006 | Protocol Version 7 | Dec 17 2008 | ||
| 3698 | Counter-Strike: Source | Source 2006 | Protocol Version 7 | Dec 21 2008 | ||
| 3716 | 1.0.0.8 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 38 | Jan 9 2009 | Released in March 25, 2009. |
| 3730 | 1.0.0.9 1.0.1.0 |
Left 4 Dead, Left 4 Dead 2 (Beta?) | Left 4 Dead engine branch | Protocol Version 38 | Jan 23 2009 | Last version to have separate protocol version, before tied to PatchVersion. |
| 3740 | Team Fortress 2, Portal | Source 2007 | Protocol Version 14 | Feb 2 2009 | ||
| 3755 | Team Fortress 2 | Source 2007 | Protocol Version 14 | Feb 17 2009 | ||
| 3777 | 1.0.1.0 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 1010 | Mar 11 2009 | Protocol version are now tied to PatchVersion. Old demos from release build up to Jan 23, 2009 cannot be viewed without downgrading the game, or edit steam.inf, and change PatchVersion to 37 (to view demos from launch version) or 38 (to view demos made in Jan - Feb 2009). |
| 3790 | 1.0.1.1 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 1011 | Mar 24 2009 | |
| 3790 | Left 4 Dead | Left 4 Dead engine branch | ? | Apr 11 2009 | ||
| 3791 | Half-Life 2: Episode Two, Portal | Source 2007 | Protocol Version 14 | Mar 25 2009 | ||
| 3846 | Half-Life 2: Episode One, Counter-Strike: Source | Source 2006 | Protocol Version 7 | May 19 2009 | ||
| 3847 | Team Fortress 2 | Source 2006 | Protocol Version 14 | May 20 2009 | ||
| 3861 | Day of Defeat: Source | Source 2009 | Protocol Version 15 | Jun 3 2009 | ||
| 3881 | 1.0.1.4 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 1014 | Jun 23 2009 | |
| 3887 | 1.0.1.4 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 1014 | Jun 30 2009 | |
| 3908 | 1.0.1.4 | Left 4 Dead | Left 4 Dead engine branch | Protocol Version 1014 | Jul 20 2009 | |
| 3939 | 1.0.1.4 | Left 4 Dead | Left 4 Dead engine branch | ? | Aug 20 2009 | |
| 3943 | Half-Life 2: Episode Two, Day of Defeat: Source, Synergy, Portal(+Prelude), Zombie Panic: Source, D.I.P.R.I.P. Warm Up, Garry's Mod (v11), Smashball, Age of Chivalry | Source 2007 | Protocol Version 14 | Sep 2 2009 | ||
| 3945 | Half-Life: Source, Half-Life 2: Episode One, Counter-Strike: Source, Dystopia, Half-Life Deathmatch: Source, Half-Life 2: Deathmatch, Eternal Silence, Half-Life 2: Capture the Flag, Garry's Mod (v10) | Source 2006 | Protocol Version 7 | Aug 26 2009 | ||
| 3971 | Team Fortress 2 | Source 2009 | Protocol Version 15 | Sep 21 2009 | ||
| 4010 | Left 4 Dead 2 | Left 4 Dead 2 | ? | Nov 4 2009 | ||
| 4013 | Day of Defeat: Source, Team Fortress 2 | Source 2009 | Protocol Version 15 | Nov 2 2009 | ||
| 4044 | 1.0.0.34 (CS:S) | Source SDK Base 2006, Counter-Strike: Source, Day of Defeat: Source, Half-Life 2: Deathmatch | Source 2006 | Protocol Version 7 | Dec 3 2009 | Last Old Engine build, CS:S 4044 is CS:S v34, last SDK Base 2006 version |
| 4097 | Team Fortress 2 | Source 2009 | Protocol Version 15 | Jan 25 2010 | ||
| 4100 | Unknown game | Source 2006 | Protocol Version 7 | Jan 28 2010 | ||
| 4104 | Half-Life 2: Episode Two, Source SDK Base 2007 | Source 2007 | Protocol Version 14 | Feb 1 2010 | Last Source 2007 build, last SDK Base 2007 version, Black Mesa mod runs on this version. | |
| 4106 | Left 4 Dead 2 | Left 4 Dead engine branch | Protocol Version 14 (may be incorrect) | Feb 3 2010 | ||
| 4121 | Left 4 Dead 2 | Left 4 Dead engine branch | ? | Mar 28 2010 | ||
| 4190 | Team Fortress 2 | Source 2009 | Protocol Version 15 | Apr 28 2010 | ||
| 4197 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | May 5 2010 | CS:S New Engine Beta (co-developed by Hidden Path Entertainment) | |
| 4209 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | May 17 2010 | ||
| 4218 (Supposed) |
Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two | Source 2009 | Protocol Version 15 | May 26 2010 | New Engine - Mac OS X | |
| 4231 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Counter-Strike: Source | Source 2009 | Protocol Version 15 | Jun 10 2010 | New Engine - Windows, first CS:S New Engine version publicly released. | |
| 4260 | 1.0.0.41 (CS:S) | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Counter-Strike: Source | Source 2009 | Protocol Version 15 | Jul 7 2010 | |
| 4276 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | Jul 23 2010 | ||
| 4295 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Garry's Mod (v12), Portal(+Prelude) | Source 2009 | Protocol Version 15 | Aug 11 2010 | ||
| 4296 | Half-Life 2 | Source 2009 | Protocol Version 15 | Aug 12 2010 | ||
| 4296 | Postal III ( Xbox 360) |
Source 2007 or Source 2009 | Protocol Version 14 | Aug 12 2010 | Postal III cancelled Xbox 360 build. Appears to be demonstrated at Gamescom 2010. | |
| 4307 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | Aug 24 2010 | ||
| 4325 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | Sep 10 2010 | ||
| 4349 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | Oct 4 2010 | ||
| 4364 | Left 4 Dead | Left 4 Dead engine branch | ? | Jan 6 2010 | ||
| 4394 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | Nov 18 2010 | ||
| 4421 | Counter-Strike: Source | Source 2009 | Protocol Version 15 | Dec 15 2010 | ||
| 4426 | Counter-Strike: Source, Half-Life 2: Deathmatch, Day of Defeat: Source | Source 2009 | Protocol Version 15 | Feb 21 2011, Dec 20 2010 (HL2:DM and DoD:S) | ||
| 4440 | Left 4 Dead | Left 4 Dead engine branch | ? | Mar 4 2011 | ||
| 4539 | Counter-Strike: Source, Half-Life 2: Deathmatch | Source 2009 | Protocol Version 15 | Apr 12 2011 | ||
| 4554 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Apr 27 2011 | ||
| 4560 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | May 3 2011 | ||
| 4569 | Day of Defeat: Source, Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 16 | May 12 2011 | ||
| 4574 | Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 16 | May 17 2011 | ||
| 4596 | Team Fortress 2 | Source 2007 | Protocol Version 14 | Jun 8 2011 | made specifically for viewing old demos? 2007 branch hasn't been updated since 2010 | |
| 4604 | Team Fortress 2 | Source 2009 or Source Multiplayer Beta? | Protocol Version 16 | Jun 15 2011 | ||
| 4608 | Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 17 | Jun 27 2011 | ||
| 4617 | Garry's Mod (v12) | Source 2009 or Source Multiplayer Beta? | Protocol Version 17 | Jun 30 2011 | ||
| 4624 | Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 17 | Jul 6 2011 | ||
| 4644 | Half-Life 2: Deathmatch, Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 17 | Jul 30 2011 | ||
| 4657 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 10040 | Aug 8 2011 | ||
| 4667 | Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 17 | Aug 30 2011 | ||
| 4687 | Counter-Strike: Source | Source 2009 or Source Multiplayer Beta? | Protocol Version 18 | Sep 14 2011 | ||
| 4706 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Sep 26 2011 | ||
| 4710 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Oct 6 2011 | ||
| 4716 | Left 4 Dead | Left 4 Dead engine branch | ? | |||
| 4727 | Counter-Strike: Source | Source Multiplayer | Protocol Version 18 | Oct 19 2011 | Source SDK Update - Multiplayer titles now use Source MP branch. | |
| 4743 | Counter-Strike: Source | Source Multiplayer | Protocol Version 19 | Nov 2 2011 | ||
| 4769 | Team Fortress 2 | Source Multiplayer | Protocol Version 21 | Nov 28 2011 | ||
| 4773 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 10045 | Dec 2 2011 | ||
| 4785 | Counter-Strike: Source | Source Multiplayer | Protocol Version 21 | Dec 14 2011 | ||
| 4826 | Postal III | Source 2009 | Protocol Version 15 | Jan 24 2012 | Latest version for Postal III (Steam, Zoom). | |
| 4833 | Counter-Strike: Source | Source Multiplayer | Protocol Version 21 | Jan 31 2012 | ||
| 4871 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 10058 | Mar 9 2012 | ||
| 4882 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 10062 | Mar 20 2012 | ||
| 4885 | Team Fortress 2 | Source Multiplayer | Protocol Version 21 | Mar 23 2012 | ||
| 4890 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 10063 | Mar 28 2012 | ||
| 4890 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 10064 | Mar 30 2012 | ||
| 4909 | Half-Life 2: Deathmatch, Team Fortress 2 | Source Multiplayer | Protocol Version 21 | Apr 16 2012 | ||
| 4904 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 11003 | Apr 11 2012 | ||
| 4910 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 11101 | Apr 17 2012 | ||
| 4920 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 11202 | Apr 27 2012 | ||
| 4924 | Portal 2, Counter-Strike: Global Offensive | Portal 2 engine branch CS:GO engine branch (Beta) |
Protocol Version 2001, Protocol Version 11307(CS:GO) | May 1 2012 | ||
| 4934 | Counter-Strike: Source, Half-Life 2: Deathmatch | Source Multiplayer | Protocol Version 21 | May 11 2012 | ||
| 4939 | Counter-Strike: Global Offensive | CS:GO engine branch (Beta) | Protocol Version 11504 or Protocol Version 11511 | May 16 2012 | ||
| 4941 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | May 31 2012 | ||
| 4961 | Day of Defeat: Source, Team Fortress 2 | Source Multiplayer | Protocol Version 21 | Jun 7 2012 | ||
| 4981 | Counter-Strike: Source | Source Multiplayer | Protocol Version 22 | Jun 27 2012 | ||
| 4993 | Team Fortress 2 | Source Multiplayer | Protocol Version 22 | Jul 9 2012 | ||
| 5028 | Counter-Strike: Source, Team Fortress 2 | Source Multiplayer | Protocol Version 22 | Aug 20 2012 | ||
| 5042 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Aug 27 2012 | ||
| 5051 | Day of Defeat: Source, Team Fortress 2 | Source Multiplayer | Protocol Version 22 | Sep 5 2012 | ||
| 5072 | Team Fortress 2 | Source Multiplayer | Protocol Version 22 | Sep 26 2012 | ||
| 5126 | Team Fortress 2 | Source Multiplayer | Protocol Version 22 | Nov 19 2012 | ||
| 5198 | Counter-Strike: Source | Source Multiplayer | Protocol Version 23 | Jan 30 2013 | ||
| 5134 | Left 4 Dead | Left 4 Dead engine branch | ? | Nov 27 2012 | ||
| 5135 | Half-Life 2, Portal, Half-Life 2: Episode One, Half-Life 2: Episode Two | Source 2009 | Protocol Version 15 | Nov 28 2012 | Last version before Steampipe. Airboat stops on every map load. Early Dark Energy glitch. Source Unpack (HL2 and Portal) | |
| 5153 | Half-Life 2: Deathmatch, Team Fortress 2 | Source Multiplayer | Protocol Version 23 | Dec 16 2012 | ||
| 5163 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 12154 | Dec 26 2012 | ||
| 5191 | Team Fortress 2 | Source Multiplayer | Protocol Version 23 | Jan 23 2013 | ||
| 5198 | Counter-Strike: Source | Source Multiplayer | Protocol Version 23 | Jan 30 2013 | ||
| 5212 | Team Fortress 2 | Source Multiplayer | Protocol Version 23 | Feb 12 2013 | First Linux build | |
| 5243 | Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch | Source Multiplayer (DOD:S) Source 2013 Multiplayer (Beta) |
Protocol Version 16, Protocol Version 24 (CS:S and HL2:DM) | Mar 16 2013 | ||
| 5252 | 1717992 (HL2:DM) | Counter-Strike: Source, Half-Life 2: Deathmatch | Source 2013 Multiplayer | Protocol Version 24 | Mar 25 2013 | First SteamPipe MP build. |
| 5275 | Team Fortress 2 | Source 2013 Multiplayer | Protocol Version 24 | Apr 17 2013 | TF2 SteamPipe beta. | |
| 5288 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two | Source 2013 Singleplayer | Protocol Version 24 | May 7 2013 | First SteamPipe SP build. Beta release. | |
| 5304 | Counter-Strike: Source | Source 2013 Multiplayer | Protocol Version 24 | May 20 2013 | ||
| 5308 | Counter-Strike: Source | Source 2013 Multiplayer | Protocol Version 24 | May 20 2013 | ||
| 5318 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | May 30 2013 | ||
| 5336 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Lost Coast | Source 2013 Singleplayer | Protocol Version 24 | Jun 17 2013 | ||
| 5337 | Day of Defeat: Source, Counter-Strike: Source | Source 2013 Multiplayer | Protocol Version 24 | Jun 18 2013 | ||
| 5339 | Portal | Source 2013 Singleplayer | Protocol Version 24 | Jun 20 2013 | ||
| 5345 | 1745010 | Half-Life: Source, Half-Life 2, Half-Life 2: Episode One, Team Fortress 2, Half-Life 2: Deathmatch | Source 2013 Singleplayer Source 2013 Multiplayer |
Protocol Version 24 | Jun 26 2013 | SteamPipe SP public release. |
| 5353 | Half-Life 2: Deathmatch | Source 2013 Multiplayer | Protocol Version 24 | Jul 4 2013 | ||
| 5365 | Half-Life 2 | Source 2013 Singleplayer | Protocol Version 24 | Jul 16 2013 | ||
| 5434 | Half-Life 2: Episode One | Source 2013 Singleplayer | Protocol Version 24 | Sep 23 2013 | ||
| 5436 | Half-Life 2 | Source 2013 Singleplayer | Protocol Version 24 | Sep 25 2013 | ||
| 5454 | The Stanley Parable | Portal 2 engine branch | Protocol Version 1000 | Oct 13 2013 | ||
| 5476 | Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Nov 4 2013 | ||
| 5543 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13200 | Jan 10 2014 | ||
| 5563 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13210 | Jan 31 2014 | ||
| 5574 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13220 | Feb 11 2014 | ||
| 5595 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13250 | Mar 5 2014 | ||
| 5645 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13270 | Apr 23 2014 | ||
| 5682 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Lost Coast, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | May 29 2014 | ||
| 5687 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Lost Coast, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Jun 2 2014 | ||
| 5711 | Half-Life 2: Episode Two | Source 2013 Singleplayer | Protocol Version 24 | Jun 27 2014 | ||
| 5723 | Portal Stories: Mel | Portal 2 engine branch | Protocol Version 2001 | Jul 9 2014 | ||
| 5875 | Portal | Source 2013 Singleplayer | Protocol Version 24 | Dec 8 2014 | ||
| 5916 | Insurgency | CS:GO engine branch | Protocol Version 1606 | Jan 18 2015 | ||
| 5917 | Insurgency | CS:GO engine branch | Protocol Version 1609 | Jan 19 2015 | ||
| 5921 | Insurgency | CS:GO engine branch | Protocol Version 1611 | Jan 23 2015 | ||
| 5931 | Insurgency | CS:GO engine branch | Protocol Version 1615 | Feb 2 2015 | ||
| 6031 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13483 | May 13 2015 | ||
| 6186 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Oct 15 2015 | ||
| 6300 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Feb 6 2016 | ||
| 6373 | Garry's Mod | Source 2013 (custom) | Protocol Version 24 | Apr 19 2016 | ||
| 6396 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | May 12 2016 | ||
| 6403 | Left 4 Dead 2 | Left 4 Dead engine branch | Network Version 2.0.4.2 | May 19 2016 | ||
| 6579 | Garry's Mod | Source 2013 (custom) | Protocol Version 24 | Nov 11 2016 | ||
| 6796 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Jun 16 2017 | ||
| 6800 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Jun 20 2017 | ||
| 6830 | Left 4 Dead | Source 2013 Multiplayer | ? | Jul 16 2019 | ||
| 7199 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Jul 24 2018 | ||
| 7227 | Left 4 Dead 2 | Left 4 Dead engine branch | Network Version 2.0.4.2 | Jul 16 2019 | ||
| 7412 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Feb 22 2019 | ||
| 7471 | Portal | Source 2007 | Protocol Version 14 | Apr 22 2019 | Leaked Source Code | |
| 7621 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13723 | Sep 19 2019 | ||
| 7629 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Lost Coast, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Sep 27 2019 | ||
| 7641 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Oct 9 2019 | ||
| 7803 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13746 | Mar 19 2020 | ||
| 7891 | Garry's Mod | Source 2013 (custom) | Protocol Version 24 | Aug 7 2020 | ||
| 7834 | Black Mesa | Xengine | Protocol Version 24 | Aug 19 2020 | ||
| 7899 | Portal | Source 2013 Singleplayer | Protocol Version 24 | Jun 23 2020 | ||
| 7915 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Jul 9 2020 | ||
| 7929 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13762 | Jul 29 2020 | ||
| 7929 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13764 | Aug 17 2020 | ||
| 7935 | 7.1.0.9 | Alien Swarm | Alien Swarm engine branch | Protocol Version 7109 | Jul 29 2020 | Latest version for Alien Swarm. |
| 7964 | Team Fortress 2 | Portal 2 engine branch | Protocol Version 24 | Aug 27 2020 | ||
| 7970 | Left 4 Dead 2 | Left 4 Dead engine branch | Network Version 2.1.0.0 Patch Version 2.2.0.0 |
Sep 15 2020 | Left 4 Dead 2 - The Last Stand Community Update | |
| 7929 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13768 | Sep 16 2020 | ||
| 8007 | Team Fortress 2 | Source 2013 Multiplayer | Protocol Version 24 | Oct 9 2020 | ||
| 8011 | Left 4 Dead 2 | Left 4 Dead engine branch | Network Version 2.1.0.0 | Oct 20 2020 | ||
| 8012 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13776 | Jan 7 2021 | ||
| 8012 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13780 | Jun 26 2021 | ||
| 8012 | Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13786 | Mar 22 2021 | ||
| 8049 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Lost Coast, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Nov 20 2020 | ||
| 8098 | Team Fortress 2 | Source 2013 Multiplayer | Protocol Version 24 | Jan 8 2021 | ||
| 8151 | Team Fortress 2 | Source 2013 Multiplayer | Protocol Version 24 | Mar 2 2021 | ||
| 8273 | 6630498 | Half-Life Deathmatch: Source, Day of Defeat: Source, Counter-Strike: Source, Half-Life 2: Deathmatch, Source SDK Base 2013 Multiplayer | Source 2013 Multiplayer | Protocol Version 24 | Jul 2 2021 | Last Source 2013 MP build (before replaced by TF2 branch) |
| 8504 | 7087047 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Feb 18 2022 | Steam Deck update |
| 8802 | 1.38.8.1 1575 (client/server) 8413246 (SourceRevision) |
Counter-Strike: Global Offensive | CS:GO engine branch | Protocol Version 13881 | Aug 24 2023 | Last CS:GO version (csgo_legacy) beta branch |
| 8928 | 2.0.0.1 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Feb 2 2024 | |
| 9474 | 2023.06.28 | Garry's Mod (x86-64) | Source 2013 (custom) | Protocol Version 24 | Oct 15 2024 | GMod version 2024.10.16 |
| 9477 | 1.0.4.4 (L4D) 2.2.4.3 (L4D2) |
Left 4 Dead, Left 4 Dead 2 | Left 4 Dead engine branch | Protocol Version 1044 (L4D) Network Version 2.1.0.0 (L4D2) |
Oct 18 2024 (L4D, L4D2) Jan 16 2025 (L4D2, Update) |
Originally released in October 24/25, 2024. Updated in December 2, 2024 (L4D, L4D2) and January 16, 2025 (L4D, L4D2) to fix another exploit in both games. Latest version for Left 4 Dead and Left 4 Dead 2. |
| 9505 | 9333546 | Half-Life 2: Deathmatch | Team Fortress 2 branch | Protocol Version 24 | Nov 15 2024 | Half-Life 2: Deathmatch 20th Anniversary Update (upgraded Source 2013 Multiplayer > Team Fortress 2 branch) |
| 9505 | 9350367 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Nov 15 2024 | Half-Life 2 20th Anniversary Update |
| 9516 | 9371887 | Half-Life 2: Deathmatch | Team Fortress 2 branch | Protocol Version 24 | Nov 26 2024 | |
| 9537 | 9433646 | Team Fortress 2 | Team Fortress 2 branch | Protocol Version 24 | Dec 17 2024 | |
| 9568 | 2.0.0.1 | Portal 2 | Portal 2 engine branch | Protocol Version 2001 | Jan 17 2025 | Latest version for Portal 2 (Windows). |
| 9578 | 9525199 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Jan 27 2025 | Beta version, which would become Feb 11, 2025 build. |
| 9593 | 9526483 | Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life: Source | Source 2013 Singleplayer | Protocol Version 24 | Feb 11 2025 | Latest version for HL2, HL:S. |
| 9600 | 9540945 (HL2:DM, CS:S) 9546320 (SDK) |
Counter-Strike: Source, Day of Defeat: Source, Half-Life 2: Deathmatch, Half-Life Deathmatch: Source, Team Fortress 2, Source SDK Base 2013 Multiplayer | Team Fortress 2 branch | Protocol Version 24 | Feb 18 2025 | Latest version for TF2 branch games. SDK for TF2 branch was also released. All Source 2013 Multiplayer games (except third-party) upgraded to this branch. 64-bit support (Windows & Linux). |
External links
- Valve Engine Build List - Google Docs
- Originally written by ExtraVirus (SourceRuns), and added to VDC with new info.
- Steam2 Chunks archive (2005-2009)
- Many older versions of the game (pre-SteamPipe) can be found here. These games obviously requires Steam to boot, and some games may not work out of the box.
SteamDB
- SteamDB can be used to find older versions of the game (starting from 2013 (SteamPipe) to present). To download older versions, user can use Steam Developer Console or DepotDownloader.