Version or build number
|
Build date
|
Release date
|
Game
|
Notes
|
Publicly available
|
Version 0.52 (build 315)
|
September 4, 1997
|
N/A
|
Half-Life
|
Leaked Half-Life alpha.
|
Yes
|
Version 0.61
|
N/A
|
N/A
|
Half-Life
|
Alpha version, described in Sierra's internal notes.[1]
|
No
|
Build 366[a]
|
N/A
|
October 25, 1997
|
Half-Life
|
Alpha version. Photo of CD uploaded by former Sierra employee Marc Tardif.[2]
|
No
|
Build 418[a]
|
N/A
|
December 16, 1997
|
Half-Life
|
Alpha version. Photo of CD uploaded by Geoff Keighley.
|
No
|
Build 676
|
August 31, 1998
|
N/A
|
Half-Life: Day One
|
OEM demo of Half-Life sent to members of the press which then leaked online.[3]
|
Yes
|
Beta 3 (build 693)[a]
|
N/A
|
September 17, 1998
|
Half-Life: Day One
|
Sent out to testers.[4]
|
No
|
Build 693
|
September 17, 1998
|
September 18, 1998
|
Half-Life: Day One
|
Bundled with 3dfx Voodoo Banshee cards. Possibly the same build as Gold 1, but unconfirmed.
|
Yes
|
Gold 1 (build 695)[a]
|
N/A
|
September 19, 1998
|
Half-Life: Day One
|
Meant to be bundled with 3dfx Voodoo Banshee cards. Photo of CD uploaded by former halflife.net site owner Steve "jedisneak" Silva.[5]
|
No
|
Build 703
|
September 27, 1998
|
N/A
|
Half-Life: Day One
|
Bundled with 3dfx Voodoo Banshee cards.
|
Yes
|
Build 718
|
October 12, 1998
|
N/A
|
Half-Life
|
Evaluation build sent out to reviewers.[6]
|
No
|
Beta 9 - Net Test 1 (build 722)
|
October 16, 1998
|
October 16, 1998
|
Half-Life
|
Sent out to beta testers for multiplayer testing. Uploaded by beta tester Chad Jessup.
|
Yes
|
Beta 12 - Net Test 2 (build 725)
|
October 19, 1998
|
October 20, 1998
|
Half-Life
|
Sent out to beta testers for multiplayer testing. Uploaded by beta tester Chad Jessup.
|
Yes
|
Build 727
|
October 21, 1998
|
October 28, 1998
|
Half-Life: Day One
|
Bundled with the Thrustmaster Frag Master controller.
|
Yes
|
Build 735
|
October 29, 1998
|
November 27, 1998
|
Half-Life
|
First Italian retail release, compiled a week before other retail releases.
|
Yes
|
RC4 (build 738)
|
November 1, 1998
|
November 2, 1998
|
Half-Life
|
Release by warez group CLASS, compiled three days before retail. Leaked by a temporary employee at one of the OEMs.[7]
|
Yes
|
Build 1083
|
October 12, 1999
|
October 20, 1999
|
Half-Life: Opposing Force
|
Press demo of Opposing Force.
|
Yes
|
Build 1417
|
September 10, 2000
|
September 11, 2000
|
Half-Life, Half-Life: Blue Shift
|
Debug build of the cancelled Half-Life Dreamcast port. Photo of CD uploaded to the Sega Dreamcast Info website.[8]
|
Impending
|
Build 1448[a]
|
N/A
|
October 11, 2000
|
Half-Life, Half-Life: Blue Shift
|
Preview build of the cancelled Dreamcast port. Photo of CD uploaded to the Sega Dreamcast Info website.[8]
|
No
|
Build 1601[a]
|
N/A
|
March 13, 2001
|
Half-Life, Half-Life: Blue Shift
|
Review build of the cancelled Dreamcast port. Photo of CD uploaded to the Sega Dreamcast Info website.[8]
|
No
|
Build 1638
|
April 19, 2001
|
April 20, 2001
|
Half-Life, Half-Life: Blue Shift
|
Leaked build of the cancelled Dreamcast port.
|
Yes
|
Build 1659
|
May 10, 2001
|
May 15, 2001
|
Half-Life, Half-Life: Blue Shift
|
Leaked build of the cancelled Dreamcast port.
|
Yes
|
Build 1672
|
May 23, 2001
|
N/A
|
Half-Life, Half-Life: Blue Shift
|
Leaked build of the cancelled Dreamcast port. Scene release.
|
Yes
|
Build 1757
|
August 16, 2001
|
N/A
|
Half-Life, Half-Life: Decay
|
NTSC-U build of the Half-Life Playstation 2 port leaked by the scene group (_Z_T_X_).
|
Yes
|
Build 1800
|
September 28, 2001
|
November 30, 2001
|
Half-Life, Half-Life: Decay
|
First European and Australian retail release of the Playstation 2 port.
|
Yes
|
Build 1813
|
October 11, 2001
|
May 28, 2002
|
Half-Life
|
Demo of the Half-Life Playstation 2 port included on the PlayStation Underground Jampack - Summer 2002 disc.
|
Yes
|
Build 1819
|
October 17, 2001
|
N/A
|
Half-Life
|
Standalone demo disc of the Playstation 2 port.
|
Yes
|
Build -7
|
September 23, 2003
|
N/A
|
Half-Life: Source
|
The "HL1 Ports" leak.
|
Yes
|
Build 2526
|
September 24, 2003
|
N/A
|
Half-Life, Half-Life: Opposing Force, Half-Life: Blue Shift
|
The "WMods" leak.
|
Yes
|
Build -4
|
September 26, 2003
|
N/A
|
Half-Life 2
|
The Half-Life 2 leak.
|
Yes
|
Build 2153
|
September 29, 2004
|
November 16, 2004
|
Half-Life 2
|
Collector's Edition of Half-Life 2, compiled over a month before the standard retail release.
|
Yes
|
Build 2915
|
October 31, 2006
|
N/A
|
Source Particle Benchmark
|
Benchmark of particle simulation of The Orange Box branch of the Source engine.
|
Yes
|
Net Test 1 (dated October 16, 1998 and marked as "Beta 9") and Net Test 2 (dated October 20, 1998 and marked as "Beta 12") are builds sent on disc by mail to playtesters[9] very shortly before the final release. Their main purpose was to test the game's multiplayer functionality. The Net Test 2 build was first dumped and made publicly available by former beta tester Chad Jessup on September 20, 2024,[10][11] and he would later post the Net Test 1 build on October 19, 2024.[12]