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.

Valve Hammer Editor 3.4

Valve Hammer Editor 3.4

Dec 29, 2012 Singleplayer Map proprietary licence (2.04mb) 6 comments

With this program you can make your own half-life maps,or edit

Later Alpha MP5 Replica

Later Alpha MP5 Replica

Nov 4, 2013 Weapons Model proprietary licence (0.04mb) 2 comments

My attempt at a late alpha mp5. Comes with sound, real model, and textures. Extract v_9mmar.mdl to models folder, and hks1,hks2,hks3 in the sound/weapons...

Beta Zombie Recreation

Beta Zombie Recreation

Nov 6, 2013 Animal Model proprietary licence (0.25mb) 0 comments

I took the dreamcast zombie, edited the textures and resized and shaped the model to replicate the one from the beta.

Prefabs Pack

Prefabs Pack

Dec 30, 2013 Prefabs proprietary licence (4.88mb) 1 comment

A large zip file containing all prefabs downloaded from the Prefab Lab (the site has been shut down in 05-10-2002) since 5/1/1999. This pack contains...

Hev charger & health charger from Half-life Decay

Hev charger & health charger from Half-life Decay

Sep 14, 2014 Prop Model public domain licence (0.09mb) 7 comments

those 2 models with they're animations, they're not made by me, they have animations and a retexture could make them look better, but im not going to...

Half-Life: Decay Low-Def Pack

Half-Life: Decay Low-Def Pack

May 23, 2015 Models Pack public domain licence (7.47mb) 2 comments

After seeing some pictures of the beta version I decided to port the original models, with exception the Doctor Keller and Barney are re-textured due...

Epic huge props pack for goldsource!

Epic huge props pack for goldsource!

Jul 14, 2015 Models Pack public domain licence (84.62mb) 1 comment

(I do not own any of this, i just modified some of them) I hope this helps goldsource developers, but know that you can't use this for commercial purposes...

Background Episode One

Background Episode One

Aug 7, 2015 GUIs proprietary licence (0.62mb) 1 comment

A new background Half Life Episode One for Half-Life 1 created by Xeno-J works Opposing Force and Blue Shift the decay sandpit!

Steam Splash Creator

Steam Splash Creator

Aug 12, 2015 GUIs proprietary licence (0.56mb) 4 comments

This little tool allows you to create custom menu backgrounds for your Half-Life games.

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Half-Life: Decay
Platform
PS2
Developer
Gearbox Software
Engine
GoldSource
Contact
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Release Date
Released 2001
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 - Singleplayer Map
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 - Prefabs
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 - Animal Model
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 - Prop Model
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 - Weapons Model
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 - Models Pack
2
 - GUIs
2