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.

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After 15 years of enjoying Half-Life, and the endless user-created content over those years, I wish to give back to the community and create my own take on the Black Mesa Incident...

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After 15 years of enjoying Half-Life, and the endless user-created content over those years, I wish to give back to the community and create my own take on the Black Mesa Incident...

After dabbling with Half-Life mapping well over 10 years ago and never releasing anything (aside from this short silly little thing called Operation Randomosity, still lurking out there somewhere), I finally decided to create something worthwhile that other people could enjoy.

Being the massive Half-Life fan that I am, I wished to create something that would fit into the existing mythos as well as staying true to the fiction. All I can give away is that this storyline begins with you playing the part of Candidate #12. You arrive at the Black Mesa Complex for another day of work - on the day that everything changed forever!

It is still in very early stages but progress has been great, and I would like to share this progress in the media below! Thank you for all who have contributed to the Half-Life universe, as well as that of any other game! You are what makes gaming great.

The first chapter is called FOUNDATION.

I hope to keep you all regularly updated! Thank you for viewing my work :)

- James

Comments
billyboob
billyboob

Damn. Looks stunning.

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MrGnang Author
MrGnang

Thank you :)

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8472

Very nice mapping. I never get tired of Half-Life, and it's always nice to see new mods for the old game still being made.

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MrGnang Author
MrGnang

Half-Life will never stop entertaining me. Honestly the best game around!

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Gunship_Mark_II
Gunship_Mark_II

Wow, holy ****, awesome mapping, great announcement, tracking!

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MrGnang Author
MrGnang

Thank you so much! Hopefully will be entertaining to play too when it is finally finished!

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Capt.Host
Capt.Host

That image where the scientist is fixing the Med Station was a very nice touch. Also, the overall mapping looks awesome.

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MrGnang Author
MrGnang

Thanks! My goal is to try and make the place seem inhabited and used by people on a daily basis, so I am going all out on little scripted sequences and events happening all around the place. Probably will end up using every NPC animation available :p

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notaclevername
notaclevername

you've been hiding those skills!? Your HL1 work looks real nice. I'm looking forward to playing it, cheers my friend ! :)

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MrGnang Author
MrGnang

Cheers to you too! :) I only began this proper a few months ago, but I think I probably picked it all up from the hundreds of quality mods I played before then :p

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notaclevername
notaclevername

It's the community I grew up idolizing. I now spend all my away-from-work time on a mod as well, a HL2 mod called ICE HL2. We don't update the page, but I do it because I want to give back / contribute into this amazing pile of fun content created by the community. The only other work I have done since now was some HL:DM weapon replacements back in the late 90's.

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violentdev
violentdev

This... Looks... Amazing...

This looks like an official expansion pack for Half-Life. I wish this was on Half-Life: Source.

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MrGnang Author
MrGnang

That's quite a compliment, thanks! :)

As versatile as source is, I feel the old engine and its' limitations give it a charm and a nostalgic feel that I just don't get with source. May try my hand at source mapping when this is finally finished!

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violentdev
violentdev

Agreed, this is going to be fun. I'll be waiting for this intently. Work on!

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Magic_Nipples
Magic_Nipples

These maps look stunning!! I just go a question if some of the models are on custom animations. I don't recall the scientist having the animation as if he's looking through a window.

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MrGnang Author
MrGnang

Thanks :)

No custom animations however, I have no animation skills whatsoever! I am using NPC models from the super definition pack, as well as blue shift, opposing force, decay, and the ps2 half life. Spirit of half life lets me swap out models when needed, so I can use all the animations that these models have!

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flippedoutkyrii
flippedoutkyrii

Fantastic work, just goes to show you Goldsource can still amaze! :)

You've got yourself a watcher.

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MrGnang Author
MrGnang

I love Goldsrc, and seeing it being pushed out of it's limits! Thanks for the support :)

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andrea89
andrea89

looks really nice and detailed, nice job man!!! :-)

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MrGnang Author
MrGnang

Thank you, it is time consuming work but happy for the response it is getting :)

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modda
modda

Yea, looks terrific! Are there any custom voice-overs?

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MrGnang Author
MrGnang

Thank you! No new voice acting, however I have lines from Half-Life, Opposing Force, Blue Shift, Decay, and even unused lines from these games to fill the dialogue. Some of it is used in new contexts or spliced up to make it seem fresh. Expect a lot of little conversations to hear if you choose to stop and listen :)

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NovaStalker
NovaStalker

I am following this mod.

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MrGnang Author
MrGnang

Goooooood, goooooooooooooood

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Richartonio
Richartonio

I like the attention to detail that can be seen on several of those screenshots. This is off to a good start ;)

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Lord.Dexter
Lord.Dexter

Love Half Life been a fan :D i LOVE IT!!!!!!!!!!!!!!!! TRACKING THIS MOD :))

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mrthejoshmon
mrthejoshmon

This looks absolutely stunning, I'm almost immersed into the mod just by the screenshots!

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Half-Life: Decay
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PS2
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Gearbox Software
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GoldSource
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