NEW AND IMPROVED DEMO NOW AVAILABLE ON MODDB AND STEAM!


You can keep up with the project on Twitter, as well as support the project via Patreon



Half-Life Decay: Solo Mission is a new, upcoming port of the PS2 exclusive Half-Life expansion "Decay", with the goal of rebuilding the game to work as a single player experience, thus allowing anyone to play through the entirety of Decay without the need for setting up a private server, and all the headaches that come with it.


Along with allowing anyone to play Decay without needing a server, this port will also rework the visuals to make them more consistent with the original Half-Life, giving every map in Decay an extra bit of polish in the process, and all without making any major alterations to the original game.



posters available

CLICK HERE TO GET THE LIMITED EDITION POSTER!



FREQUENTLY ASKED QUESTIONS


Q: Will Dr. Colette Green make an appearance?

A: Colette Green won't be appearing in Decay: Solo Mission in any form whatsoever. As far as I'm concerned, Dr. Green exists solely as an avatar for the second player, and as a character has no real impact on the lore or any presence outside of Decay, unlike Dr. Cross who, alongside inventing the HEV suit, also makes cameos in every HL1 game and expansion.


Q: Will the source code/map sources be made public?

A: Yes! Nothing is available right now, as the contents of the mod are constantly changing. However, once the full mod is released, all of the source files will be made available for anyone to use as they wish!


Q: Will this mod explain what happened to the main characters of Decay after the ending?

A: It won't. The way I see it, any attempt by myself, or anyone else besides Valve and Gearbox, to add on to the story would be pure fan-fiction, and thus wouldn't have a place in Solo Mission.


Q: Will you be able to use the original Half-Life models?

A: Yes! One of the goals of Solo Mission is to make the aesthetics match the original release of Half-Life and it's expansions, including full compatibility with both the original models, and their original HD variants.


Q: Will Solo Mission include any of the cut content from Decay?

A: It won't. The main goal of Solo Mission is to simply make Decay into a single player experience, and to give it a bit of polish along the way. If I attempted to start adding new chapters to it, it'd stop being Decay and turn into something else entirely.


Q: Will the mod feature a co-op mode?

A: It won't. All of Decay is being re-worked in order to suit single-player gameplay. The amount of work to make the mod co-op would not only require re-reworking all of the levels, but would defeat the point of the entire project.


Q: Will the bonus mission, "Xen Attacks", be present in Solo Mission?

A: Yes! Just as it was in the original Half Life: Decay, Xen Attacks will be available as a bonus, unlockable mission, polished and re-created with the same level of care that's being given to the main game.



For those struggling with any particular puzzles, or who just want to have a look at the mod itself, have a look at the official Walkthrough!




Note: This port of Decay has no affiliation with the existing PC port, and is not utilizing any of the work from it. All maps and models being used in Half Life Decay: Solo Mission are based on assets pulled directly from the PS2 disc itself via Supadupaplex's PS2 Half-Life tools, as well as new/edited NPC models provided by Leviosah.


Artwork by Decepticoin, who's artwork can be found on Twitter and Deviantart.


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simple header 2


Media Update #1



It's been a while, but I'm back to working on the project! This time I have some WIPs of Solo Mission's fourth chapter, "Resonance", to share with you. I've been pretty pleased with how it's been turning out, and I figure that I may as well share the progress with all of you since there was such a long gap between updates.

c4WIP3


c4WIP2


c4WIP1


c4WIP4


Outside of these screenshots, you can now view even more WIP content by supporting me on Patreon, where I'm uploading behind the scenes pics of various maps! Alternatively, you can also support the project by getting yourself an official Decay: Solo Mission poster.

Thanks for sticking around during yet another hiatus. From this point onward, I'm gonna try to have more frequent updates, so be sure to check in every once in a while!

-Mr. Floyd

Media Update #1 (Decay: Solo Mission)

Media Update #1 (Decay: Solo Mission)

News 11 comments

Sharing some of the work that's gone into Chapter 5 of Decay: Solo Mission.

Status Update #4 (Decay: Solo Mission)

Status Update #4 (Decay: Solo Mission)

News 9 comments

A steam release, a new demo, official art prints, and more!

Status Update #3 (Decay: Solo Mission)

Status Update #3 (Decay: Solo Mission)

News 13 comments

By some miracle, we're not dead yet! This update shows off some WIP rooms from the fourth chapter of Decay, and some test footage of our upcoming subtitle...

Status Update #2 (Decay: Solo Mission)

Status Update #2 (Decay: Solo Mission)

News 10 comments

Seven months after the first status update, we have several new screenshots, as well as general updates on how progress has been coming along.

Add file RSS Files
Decay: Solo Mission (Demo 2)

Decay: Solo Mission (Demo 2)

Demo 9 comments

NOTICE: This mod is designed to run with the Windows version of Half-Life currently available on Steam. Running different versions of Half-Life, such...

Extended HD Gina for Decay: Solo Mission

Extended HD Gina for Decay: Solo Mission

Models Pack 6 comments

Originally made for my Extended High Definition Pack, this addon adds new HD models for Gina Cross (made by Dakashi_Val) and improved HD weapons. Also...

(OUTDATED) Decay: Solo Mission (Demo  1)

(OUTDATED) Decay: Solo Mission (Demo 1)

Demo 50 comments

NOTICE: This mod is designed to run with the Windows version of Half-Life currently available on Steam. Running different versions of Half-Life, such...

Comments  (0 - 10 of 251)
Guest
Guest

hello mr floyd.may you tell when we will get the next demo?I just completed the second demo and I really would like to have more.

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Mr_Floyd Creator
Mr_Floyd

Unfortunately, there's no more demos planned in the future, as demo 2 already lets you play the entire first third of the game.

Reply Good karma+3 votes
Guest
Guest

Sooo.... no Dr. Green, huh? So I guess the chapter name 'Code Green' is now gonna be called 'Code' then? :P

Reply Good karma Bad karma+2 votes
Mr_Floyd Creator
Mr_Floyd

No joke, figuring out what to do about that title name's been a pretty challenging aspect of development. I'll have something by release though...probably.

Reply Good karma+2 votes
Guest
Guest

Rename it to Code Cross or Code Gina as like a small pun to the fact that Dr. Green isn't in the mod.

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Scorp97
Scorp97

Honestly, I think you could just let the name be. I always saw "Code Green" as authorized to launch the rocket.

Reply Good karma Bad karma+3 votes
/TheWolf
/TheWolf

That actually makes sense

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BlackHand27
BlackHand27

What happened to the Patreon page? The 10$ tier is gone.

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Mr_Floyd Creator
Mr_Floyd

As the 10 dollar rewards had all been claimed, the Patreon was reworked

Reply Good karma+2 votes
BlackHand27
BlackHand27

Oh, I did actually support you through with the 10$ tier for 3 months. That's why I got surprised there. I'll keep up with the 5$ one then. Good luck with the project!

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Latest tweets from @halflife_dsm

RT @Halflife_DSM: And for the third and final day of the Solo Mission WIP pic marathon, have two WIPs for the price of one! These are… T.co

Sep 19 2022

RT @Halflife_DSM: Since you all seemed to like the last WIP pic so much, have another one! This one's also taken from the fourth chap… T.co

Sep 9 2022

RT @Halflife_DSM: It's been a while, have some WIP progress pics! This is from the fourth chapter of Solo Mission, "Resonance". T.co

Sep 7 2022

And for the third and final day of the Solo Mission WIP pic marathon, have two WIPs for the price of one! These are… T.co

Aug 31 2022

Since you all seemed to like the last WIP pic so much, have another one! This one's also taken from the fourth chap… T.co

Aug 30 2022

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