Entropy : Zero is a modification for Half-Life 2. Everything Half-Life belongs to the Valve Corporation.

Universal Union font by /u/CubicApocalypse.

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The Entropy : Zero 2 demo is now available! You can download it here. We are also including a Steam Art pack for players who wish to dress their library entry for EZ2. You can find that here. We have also packaged the demo with FGDs to help mappers get into the EZ2 mapping game early. Mod installation instructions are below, but check out this shiny new trailer first:

Installation 1) You will need to have Source SDK Base 2013 Singleplayer installed. 2) Extract the folder to your Steam/Steamapps/Sourcemods folder and restart Steam. The demo will then appear in your library. 3) Source SDK Base 2013 Singleplayer will need to be set to use the ‘upcoming’ beta. You can select this by right-clicking on Source SDK Base 2013 Singleplayer in Steam, clicking on the Betas tab and selecting ‘upcoming’ from the drop-down menu. Bug reporting and feedback We appreciate all constructive feedback. We will be actively collecting feedback through demo channels on our Discord server. Come and join us here.

It's been a while since I did any kind of official update, so here's one for the end of Feb 2020.


Things on my side were delayed a bit over the last two weeks as I got really unwell with a stomach ulcer. They seriously suck and I never want one again. I'm on the mend now (hopefully).


The demo is nearly there and it's time I started talking about what this demo is actually going to be.

Let me break it down for you:


- The EZ2 demo will include gameplay slices from chapters 1, 2 and 4.

- The demo includes small summary segments to give players hints as to what occurs in each chapter beyond what is featured in the demo.

- The demo will be released on Moddb hopefully before April.

Despite it's relatively small size, there has been a lot of work to do to get things in order for the demo. We're hoping to have a spoiler-free experience for you, so you can really see what EZ2 is all about without ruining the final product.

Stay tuned, and hopefully we can get this into your hands SOON!

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To kick off 2020, we will be releasing a public demo. Soon. We don't know when exactly but it won't be long.


The demo will be hosted on Moddb and I have been busy rejuvenating the page with new details and media to prepare for its arrival. You should totally check it out here!


Presently the demo will consist of a handful of maps from various chapters, to give players a taste of what we have to offer.


Stay tuned!