Half-Life: Decay is an add-on included in the PlayStation 2 port of the first-person shooter computer game Half-Life, developed by Gearbox Software and published in October of 2001. Our team is working on straight port of this game to PC! we shouldn\'t have to be doing this, but for some reason valve/ gearbox scraped decay for the pc. \"Decay PC\"\'s active development began in mid-October of 2005. Like Gearbox\'s other expansion packs Opposing Force and Blue Shift, Decay returns to the setting and timeline of the original story, but with different player characters: two female colleagues of Gordon Freeman, Dr. Gina Cross and Dr. Colette Green,who both take part in the Anomalous Materials laboratory experiment - they make preparations for the experiment under the Test Chamber such as monitoring Anti-Mass spectrometer and delivering anomalous materials to Dr. Freeman. When disaster happens both women together with their collegues Dr. Rosenberg...

RSS Reviews  (0 - 10 of 159)

Great offical mod.


好啊 谢谢你们的制作 非常感谢

Excellent I have always wanted to play this add-on ( I don't have a PS2 )

Gotta say, you guys did a pretty good job, porting it.

el juego esta bueno, sobre todo cuando podes jugar con otra persona, los que lo crearon son unos grosos,la historia es casi repetida (en parte) pero te cuenta como fallo el experimento y quienes apoyaban a Fremman desde otro lado
lo que me gustaria seria que durara mas el juego x(
Muy recomendado :D

A wonderful port of the console version, allowing us PC gamers to finally play it!


Good addon with cool gameplay, atmosphere, design and plot.



Morelianos_attacks says

May contain spoilers Agree Disagree

The further you go in the mod, the better it becomes. It begins with simple missions and possibly some people would stop playing at the end of chapter 2 or 3. After that, not only the gameplay becomes exciting but the storyline is more interesting (although a reverse resonance cascade doesn't sound very creative). Maybe the most interesting thing about this is how it cross plots with HL Blue Shift and HL Opposing Force. Also it becomes more difficult as you get closer to the end. The end let much to be desired though.

I highly recommend play this in Co-op. Playing it Single Player is challenging, but not in a good way.


Decay may be a short mod, but it is sure a fun mod if you are going to play it co-op. If you are going solo well, i think you may find it rather frustrating to switch between players to run different tasks. Nice but not very well-written storyline, same all-hl1 weapons and some new improvements for the GldSource engine. I still give it a 10/10, mainly for the effort of this mod's team to bring Half Life-Decay to the PC platform!

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Highest Rated (2 agree) 10/10

Great offical mod.

Aug 10 2012 by poshgaloo

Lowest Rated (2 agree) 3/10

this was to be fantastic if the history made any sence =P

Jul 13 2009 by bluluxabica