Half-Life: Decay is the the third expansion pack for the award-winning game, Half-Life. It was included as part of the PS2 version of Half-Life. Decay returns to the setting and timeline of the original story, albeit portraying the story from the viewpoint of a different set of protagonists: two scientists working in the Black Mesa Research Facility. Decay is a cooperative multiplayer game, designed to be played by two people working together to pass through the game's levels.

It was unofficially ported to PC by a group of Ukrainian developers in 2008.

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Hello again everyone.

This has all been so overwhelming, the reaction to my work has much more incredible than I could ever have anticipated.

My intention was to make something that would reflect what Half-Life meant to me - the horror, the comedy, the action, and the realism of the world around you. Half-Life and it's many community made mods have stuck with me my entire life since I was young and changed the way I looked at games. A lot of the feedback from you all so far seems to show that I might have made some other people remember the same feelings Half-Life brought us when it was first released.

You are all brilliant. All the feedback, videos, reviews, comments have all meant the world to me. Thank you. I dabbled in Half-Life level editing when I was a teenager (sometime around 2000/2001), and never went back to it, but I decided to try my hand at making something worthwhile to release, around five years ago - perhaps spurred on by a lack of Episode 3. A lot has happened in this time - and releasing this marks the end of a long journey for me. The reception I have received has definitely made it all worth while.

I have just released v1.2 - which I hope should fix the last few crashes. A couple of minor bugs may remain, but I no longer have any real time to spend on this aside from fixing issues that prevent it from working - but please do not hesitate to send any issues to me.

On a personal note - I have something to ask. A few months ago, I became a father to the most wonderful little boy in the world. However, when he was born, we found out moments later he had an un-diagnosed heart condition which meant he would not live without immediate open heart surgery. For my wife and I, this was the hardest and most difficult time of our lives, but thanks to the incredible team at the Royal Hospital for Children in Glasgow - he has made a full recovery after surgery and is expected to lead a normal healthy life. There is nothing that can prepare you for this kind of situation, and not everyone is as fortunate as we were.

I would like to ask - if you enjoyed my work and have the means or the inclination - please make a donation to the Glasgow Children's Hospital Charity to support these wonderful people who saved my son's life. Donations will help save, help and enrich the lives of other children.
Glasgowchildrenshospitalcharity.org
Justgiving.com

Thank you, James

Half-Life: Echoes has been released!

Half-Life: Echoes has been released!

News 52 comments

After 20 years of enjoying everything that the Half-Life community has had to offer, I am incredibly happy to finally release my own contribution to you...

Half-Life : Echoes Release Date and Trailer

Half-Life : Echoes Release Date and Trailer

News 47 comments

Playtesting is complete. A release is imminent. Come check out the trailer!

Half-Life : Echoes final polish

Half-Life : Echoes final polish

News 30 comments

A complete version of Echoes is being play-tested for final bug testing and polish. I will be releasing soon.

Help needed

Help needed

News 7 comments

Map developers needed.

Add file RSS Files
Half-Life: Echoes v1.3

Half-Life: Echoes v1.3

Full Version 80 comments

Half-Life: Echoes .zip file - Version 1.3 - Requires Windows and the Steam version of Half-Life.

Sandpit v3.7.1 (ZIP)

Sandpit v3.7.1 (ZIP)

Full Version 34 comments

Fixed crash on map change (thanks SylvesterBarry@ModDB). Extract the .zip to steamapps\common\Half-Life\ and restart Steam to play.

Xash studioMDL Goldsrc Large Model Compiler

Xash studioMDL Goldsrc Large Model Compiler

Modelling Tool 5 comments

Large Model compiler for Half-Life mods by Xash-Team. for more info please click

Hi-Def Gman HL1 "Wisely done Mister Freeman"

Hi-Def Gman HL1 "Wisely done Mister Freeman"

Audio 12 comments

A bit of clever editing with some Michael Shapiro lines to re-create the final words spoken in the canon ending of Half-Life, spoken by the gman: "Wisely...

Half-Life Uplink

Half-Life Uplink

Demo 28 comments

This is one of the two demos released for Half-Life. The first one, called Day One, was just shipped with certain video cards and never released to the...

Half-Life Unofficial FAQ

Half-Life Unofficial FAQ

Other

An old Half-Life FAQ, downloaded from an archived Half-Life website.

Comments  (0 - 10 of 24)
Leviosah
Leviosah

I think Decay deserves more love and also a brand new updated PC Port ;^)

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jonatasv
jonatasv

james good morning, my name is jonatas moro in brazil, and recently every day I play your hl decay with my brother on my ps2, thanks to you, I am very happy when I play this marvel of universe half life.
I come to thank you for what made this game changed my life,
I hope that someday an unofficial port of opposing force can be released for ps2.
God bless you and your family.
THANK YOU

Reply Good karma Bad karma+1 vote
heady123
heady123

Thank you!!!!!! Game like Good job!

Reply Good karma Bad karma+1 vote
★HECU★
★HECU★

Where button download

Reply Good karma Bad karma0 votes
elek2008
elek2008

How do I host a server?

Reply Good karma Bad karma+1 vote
Cdm966
Cdm966

Ahhh. Nostalgia. :)

Reply Good karma Bad karma+5 votes
xxx3456789
xxx3456789

I Play The PC Decay...

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kenter
kenter

I remember playing this on PS2.

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AymericTheNightmare
AymericTheNightmare

Yeah, me too. But quite hard in singleplayer.

Reply Good karma Bad karma+3 votes
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Half-Life: Decay
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Gearbox Software
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